DYXNY-FGH01 20KW wind and solar energy storage intelligent microgrid training system experimental device

Release time：2024-07-03 11:30viewed：times

1. Project Overview This system is a diversified "wind, solar, and hybrid new energy experimental tr*ning system" that
combines scientific research and innovation concepts with experiments and practical tr*ning, including wind power generation, photovolt*c power generation, and data collection . The system is a microgrid power generation system composed of
wind turbines
, solar cells, sun tracking systems, wind and photovolt*c control system m*n control systems. Its working principle is that wind power and photovolt*c power generation systems generate electricity, store energy with lithium iron phosphate batteries, and invert DC/AC into alternating current. The system itself serves as a small transformer, power transmission station, and drives AC charging piles or other power supply equipment.
The system will operate according to the established strategy. During low power consumption periods, the energy storage system will be charged through photovolt*c power generation or wind power generation. When the photovolt*c energy is insufficient or there is no wind at night, power will be drawn from the grid to supplement the power gap of the energy storage battery. During peak hours, the battery power is continuously sent to the grid through the converter system to form peak and valley compensation performance. The system can operate automatically, customize time periods, or develop operation strategies through a local computer to facilitate management.

① 24KWH energy storage pool and BMS management system
② Photovolt*c control system
③ Wind control system
④ 50kw microgrid energy storage bidirectional converter (including STS, DC/DC converter)
⑤ Configuration of microgrid energy management EMS and monitoring software
⑥ Configuration comprehensive AC power distribution power quality detection cabinet
1.1 System topology diagram
1.2 Functional features
u Each module of the entire system has reserved CAN\RS485\RS232\USB\TCPIP communication interface. Each module in the system can be monitored through this communication interface to facilitate future project development and use.
Ø The system experiment platform integrates indoor temperature/humidity meter, wind speed measurement, and illumination measurement system, making the operation more intuitive for users;
Ø The system DC-AC grid-connected synchronous power supply adopts high-frequency pulse modulation technology, which has small size and high efficiency. and high power factor output;
Ø The system panel uses an intuitive digital meter and LCD display to allow users to understand the current system working status;
Ø The off-grid power supply on the system can provide users with AC 110V/220V/380V pure sine wave AC power;
Ø The practical tr*ning system allows tr*ning students to disassemble, assemble and move by themselves. It is easy to use, noise-free and pollution-free;
Ø The system adds a m*ns power and wind-solar complementary power generation switching module to make the experiment more operable;
Ø Adds distributed power supply principles and Experimental circuits allow students to increase their understanding of new knowledge;
Ø Add a DC bus unit to facilitate connections and experiments between system modules;
Ø Independent backup lithium iron phosphate energy storage battery and BMS charge and discharge management unit;
2. Plan Overview
2.1 Composition of the wind power generation system
The wind power generation system consists of one (set) wind power grid-connected control system, 10KW vertical axis wind turbine unit, blades, wind turbine control system, tower, etc.
2.1.1 Power generation control system:
distributed wind power generation grid-connected system, wind and solar complementary grid-connected power generation system, wind power grid-connected system;
2.1.2 Features:
Ø n Wind power generation dedicated grid-connected control inverter integrated machine
Ø n Wide Range of wind power generation MPPT function, power curve can be set at 30 points
Ø n Complete protection function
Ø n Optional RS232/RS485/GPRS for computer monitoring, of which GPRS can realize APP monitoring at the same time
2.1.3 Technical parameters:

model	WWGI50
Fan input parameters
Rated input power	10kW
Rated input voltage	380Vdc
Input voltage range	0~600Vdc
Cut-in voltage	60Vdc (factory value, 60Vdc~360Vdc can be set)
Rated input current	10Adc
manual brake	After long pressing the button for 5 seconds, it will be completely unloaded and needs to be restored manually (press and hold ag*n for 5 seconds to restore)
	When the *r switch is closed, the three-phase AC short circuit
Overvoltage braking	When 360Vdc (factory value, 60Vdc~600Vdc can be set) reaches the unloading voltage, it starts PWM step-by-step unloading. When the voltage increases ag*n, it is completely unloaded at 20Vdc.
Overwind speed braking (optional)	14m/s (0-30m/s can be set), completely unloaded when reaching the system set wind speed, and automatically restored after 10 minutes
Over-speed braking (optional)	500 rpm (factory value, 0~1000 rpm can be set), it will be completely unloaded when it reaches the system set speed, and will automatically recover after 10 minutes;
AC output parameters
Number of grid phases	Three phases
Rated output power	10KW
Rated grid voltage	380Vac
Grid voltage range	310~450Vac
Rated grid frequency	50Hz
Operating frequency range	47~55Hz
Rated grid output current	8A
Maximum output current	9A
efficiency
Maximum conversion efficiency	≥96%
Protective function
DC input side overvoltage protection		have
AC output side overvoltage/undervoltage protection		have
AC output overfrequency/underfrequency		have
DC reverse polarity protection		have
DC input overload protection		have
AC short circuit protection		have
surge protection		have
Anti-islanding protection		have
Over temperature protection		have
Rectification method		Uncontrolled rectification
Display method		LCD
Display content		Fan voltage, fan current, fan power; grid voltage, grid-connected current, grid-connected power, accumulated power generation, fault code, etc.
Monitor mode (optional)		RS232/RS485/GPRS
Monitor content		Fan voltage, fan current, fan power; grid voltage, grid-connected current, grid-connected power, accumulated power generation, fault code, etc.
Isolation method		No transformer
Lightning protection		have
ambient temperature		-20℃～+60℃
humidity		4%~100%, with condensation
noise		≤65dB
cooling method		*r cooling
Installation method		Wall-mounted
Enclosure rating		IP65
Product size (width × height × depth)		406×540×219mm
Product Weight		29kg
Unloading box size (width × height × depth)		390×730×190mm
Net weight of unloading box		19kg

The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then use a speed increaser to increase the speed of rotation to prompt the generator to generate electricity.

model	SHF-10000
rated power	10.0W
Maximum power	12kW
Rated voltage	120V/220V/380V
Start wind speed	2.5m/s
Rated wind speed	18m/s
maximum wind speed	45m/s
Net weight of fan	350kg
Wind wheel diameter	2m
Tower height	9m
Blade height	3.6m
Number of leaves	4 slices
Blade material	Aluminum alloy
dynamo	Three-phase AC permanent magnet synchronous generator/permanent magnet levitation generator
Tower type	independent tower
Protect	Fan self-rotation protection/electromagnetic braking
Operating temperature	-40℃-80℃

Select the installation site.
Choose a flat land with solid soil as the installation site. The location of the wind turbine installation should be at least 50 meters away from houses and personnel activities. Be sure to consider the light and shadow influence of the wind blades and the operation time of the wind turbine when selecting the installation site. The impact of noise generated (the noise is about 65dbA during normal operation). At the same time, avoid being surrounded by tall trees, buildings and other obstacles that may affect wind speed and direction.
It is prohibited to install on soft sand, uneven sites, sites with potential for subsidence or landslides, depressions and other sites that are prone to geological changes due to climate effects. At the same time, you need to consider the distance from the motor part of the wind turbine to your energy storage battery pack. The shorter the distance, the shorter the transmission cable used, so the energy consumption during the transmission process is less. If a longer distance is necessary, Try to use thicker standard cables.

For foundation size (ground installation),
please choose to install and wire the wind turbine in calm weather.

model	10KW tower
tower pole	Independent tower (m)	12
foundation	Center foundation (m)	1.21.21.5

Roof installation:
Note: Roof installation requires on-site investigation and consent from Party A’s logistics department, and a rough assessment of the load-bearing capacity of the roof structure is also required.
2.2 Photovolt*c power generation system The
10KW photovolt*c power generation front-end is m*nly composed of two 5KW sun-chasing power generation units, with a total capacity of 10KW. Can be installed on the ground or on the roof.
The 10KW photovolt*c energy storage power generation system is m*nly composed of four major parts: photovolt*c sub-unit, dual-axis tracking unit, energy storage unit, grid access device and energy management system. The control
principle of system operation principle
is as follows:
Ø During the day, the photovolt*c system generates power to give priority to the load in the laboratory . When the photovolt*c power generation is greater than the load power, the excess electric energy is stored in the battery. When the photovolt*c power generation is less than the load power, the energy storage battery and photovolt*c power At night, the photovolt*c side DC shuts down, and the energy storage battery supplies power to the load
through the energy storage inverter. When the rem*ning capacity of the battery (SOC) reaches the set value, the system automatically switches to the power grid, and the power supply is supplied by the power grid. Load power supply, according to demand, the power grid can charge the battery through the energy storage inverter, or not;
Ø When the power grid f*ls, the photovolt*c storage system automatically switches to the off-grid operation mode, and the photovolt*c battery and energy storage battery simultaneously charge the battery. Load power supply;
Ø The power grid can charge the energy storage battery, and the charging power and charging time are adjustable;
2.2.1 Photovolt*c modules
The front end of the photovolt*c power generation system uses 40 260Wp polycrystalline silicon modules, with a peak output power of 10.4KW
Ø Component model: ZM260P-29b polycrystalline
Ø Maximum power (W): 260
Ø Open circuit voltage (V): 40.2
Ø Short circuit current (A): 8.81
Ø Maximum power point operating voltage (V): 29.9
Ø Maximum power point operating current (A): 8.36
Ø Conversion Efficiency: 17.12%
Ø Open circuit voltage temperature coefficient: -0.292%/K
Ø Short circuit current temperature coefficient: +0.045%/K
Ø Power temperature system: -0.408%/K
Ø Maximum system voltage (V): 1000
Ø Fuse rated current ( A): 20
Ø Module size: 1650×992×40mm
Ø Weight: 19.1kg
Ø Frame: anodized aluminum
Ø Glass: white tempered safety glass 3.2mm
Ø Cell packaging: EVA
Ø Backsheet: composite film
Ø Solar cell: 6×10 polycrystalline silicon solar cells (156mm×156mm)
Ø Junction box
1) 6 bypass diodes
2) Insulation material: PPO
3) Waterproof grade: IP65
2.2.2 Bi-axis tracking system (tracking bracket and fixed bracket 2) Choose one)
The dual-axis tracking system is a power device that can keep the solar panel facing the sun at all times, so that the sunlight's rays can illuminate the solar panel vertically at any time.
The mechanical structure of the tracking bracket is m*nly divided into three parts, columns, beams and grids. The connection between the column and the beam is an x-axis reducer, the connection between the beam and the grid is a #-axis reducer, and the steel structure brackets are all hot-dip galvanized and spray-coated.
The tracking system will increase the amount of solar radiation received by more than 35% and significantly improve the power generation efficiency of solar photovolt*c modules.
The m*n control adopts Siemens S7-1200 series host, high-precision and high-stable digital control scheme design, advanced astronomical algorithm, real-time tracking of the sun to m*nt*n the maximum output power of the photovolt*c array at all times, and improve the photovolt*c power generation conversion efficiency. The wind speed measuring device m*nt*ns silent sensing operation under normal weather conditions. It will automatically operate when encountering strong winds or when the wind speed reaches a cert*n level. It controls the host to automatically level the bracket system to reduce wind resistance and protect the bracket system from operating safely in stormy weather. .
The overall bracket system is placed on the roof and transmitted to the indoor m*n console via cables, which can realize practical tr*ning related to distributed rooftop power generation. The generated energy is combined with wind power generation and is inverted by DC-AC into three-phase sine wave 380V AC power. For use in laboratory lighting, computers and hydrogen production systems.
The design and installation of all systems are the same as in actual projects, and students can use them to practice disassembling and assembling practical prototypes under the guidance of teachers.
1. The entire bracket is made of national standard steel. After pickling, it is galvanized and spray-p*nted for anti-rust treatment. The resistance can reach level 15 or above.
2. The electric push rod is an electric drive device that converts the rotational motion of the motor into the linear reciprocating motion of the push rod. It can be used as execution machinery in various simple or complex processes to achieve remote control, centralized control or automatic control.
3. Rotary reducer uses a slewing bearing (commonly known as a turntable) as the follower of the reducer, which can achieve unlimited circular rotation and deceleration, and can withstand large axial force, radial force and overturning force;
² Output rotation Moment: 65 kN.m
² Overturning moment: 38.7 kN.m
² Axial static load: 338 kN.m
² Radial static load: 135 kN.m
² Reduction ratio: 61:1
4. The new modular SIMATIC S7-1200 controller is the core of our newly launched products, which can realize simple but highly precise automation tasks. The system has five different modules, namely CPU 1211C, CPU 1212C, CPU 1214C, CPU1215C and CPU1217C. Featuring fast startup, precise monitoring and the highest level of av*lability.
2.2.3 Fixed bracket (choose one of tracking bracket and fixed bracket)
system bracket has a design capacity of 10KW, using standard engineering parts, galvanized square steel, galvanized C-shaped steel, with beautiful structure and high strength. It is composed of 40 pieces of 260Wp Solar photovolt*c modules are formed into a 40-degree inclined plane and fixed on a C-shaped steel frame.
1) Inclined type, standard engineering C-type galvanized steel
2) Bracket material: engineering galvanized square steel, including standard parts, grounding holes, etc. All required parts, including bracket base.
3) Area of the square array: installed on the roof or on the ground, about 40 square meters
4) The bottom foundation of the bracket adopts a reinforced concrete structure, and multiple cement foundations with a size of 40*40*30CM are fixed with the bracket to enhance the firmness of the bracket. And wind resistance
2.2.4 10KW grid-connected inverter
The parameters of the grid-connected inverter are as follows:

Photovolt*c side input
Maximum input power (kW)	10
MPPT voltage range (V)	120-850
Input voltage range (V)	100-1000
Number of MPPTs	2
AC output-grid connection status
Maximum output power (kW)	12
Output voltage range (V)	3N-400, 324-436, 437-460 (<10 minutes)
Rated voltage & frequency (V/Hz)	380±2%,50±2% (grid matching)
Output power(kW)	Rated power 10.0, instantaneous power 12.0
Maximum output current (A)	22 Three-phase balance
Total current waveform distortion rate	<3%
Island protection	system build-in
power factor	(-0.95, +0.95)

Product Features
1) Leading technology, fully meeting the access and control requirements of the grid or load²
It has grid-connected charging and discharging and independent inverter functions, suitable for various applications² It has grid-connected and off-grid parallel functions, and has good
capacity expansion²
Can be interfaced with a variety of batteries and has a variety of charging and discharging working modes²
Can accept system scheduling instructions and BMS instructions in real time, communication methods include RS485, CAN, Ethernet²
Reactive power is adjustable, power factor range is from 0.9 lead to lag
0.9² DC voltage range, supports low-voltage 48V battery input²
110% rated output power can achieve long-term operation
2) High efficiency and energy saving, more integrated, better customer experience²
Frontal m*ntenance, reliable wall installation, more convenient installation and m*ntenance, reducing m*ntenance
costs² The protection level is IP21, with anti-drip function and anti-condensation function²
High-efficiency PWM modulation algorithm to reduce switching losses
3) More advantages²
Dual power supply redundant power supply scheme improves system reliability²
Complete protection and fault alarm system, more Safe and reliable²
Uses dynamic graphic LCD interface to provide a friendly operating experience²
Can operate continuously at full power at -25℃~+55℃
² Adapts to high-altitude harsh environments and can operate continuously and reliably for a long time²
Supports off-grid active operation function²
Suitable for sharing DC bus system and common AC bus system
2.2.5 Photovolt*c lithium iron phosphate battery and BMS energy storage management system
are lithium-ion batteries that use lithium iron phosphate as the cathode material. The PO bonds in the lithium iron phosphate crystal are stable and difficult to decompose, even at high temperatures. Or when overcharged, it will not collapse and generate heat or form strong oxidizing substances like lithium cobalt oxide, so it has good safety.
Lithium iron phosphate battery introduction
Lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphate as the cathode material. The PO bond in the lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperatures or overcharge, it does not behave like lithium cobalt oxide. The same structure will collapse and generate heat or form strong oxidizing substances, so it has good safety.
1. Leading safety
materials/cell-level 6-layer safety device, switch box system-level dual protection circuits to ensure system safety; from the battery cell to the system, it has global-level safety authoritative certifications: UL1642, UN38.3, UL1973, VDE, JET .
² Built-in reliable safety valve. When overcharging or temperature rises sharply, side reactions occur, the internal pressure of the cell increases to a cert*n value, and the safety valve automatically opens to deflate, preventing the battery from bulging or exploding;
² The diaphragm is coated with high-temperature resistant ceramics Technology to prevent internal short circuit caused by dendrites or battery impact, and cut off the lithium ion transmission channel at high temperatures.
² Built-in positive fuse (that is, the positive pole is connected to the shell through a fuse). When the battery is short-circuited or overcharged and other accidents occur, the built-in positive fuse blows for protection;
² The negative pole has an overcharge protection device OSD, which protects the battery in case of abuse such as overcharging. , the internal *r pressure of the cell rises, inducing OSD deformation, and the charging current is detoured to the case circuit, causing the positive fuse to blow and cutting off the charging circuit;
² The positive polarity aluminum square shell has good heat conduction and heat dissipation performance, and can prevent surface corrosion. Avoid electrolyte leakage during long-term use;
² A needle protection layer (NSD) is built into the case. When the case is pierced by a sharp hard object, the NSD layer forms a circuit with the case in advance to reduce the risk of short circuit of the battery core.
² The circuit breaker prevents damage to the battery pack caused by external short circuits.
2. Excellent electrochemical performance,
long cycle life, strong tolerance, good high and low temperature performance;
² Round cell design, extremely high electrolyte volume and electrolyte retention rate (compared to soft pack batteries), ensuring single battery At 25°C, the cycle times of @0.5C1C, DOD100%, and EOL80% are more than 4,000 times. The same product has been applied in large quantities in the field of electric vehicles, and its performance has been verified by many car companies. This product is in the field of energy storage. For application, it is recommended that the discharge rate be below 0.5C, and its cycle life is expected to be much higher than 6000 times.
3. The rem*ning capacity has no instantaneous drop characteristics,
the EOL is less than 50%, and the discharge performance can still be predicted;
the circular battery cell design has extremely high electrolyte retention rate, and there is no electrolyte drying out during the battery life cycle (compared to soft-pack batteries). Even if the capacity decreases to 50%, there will be no "instant drop" in the rem*ning capacity. Meaning longer asset utilization and higher ROI.
4. The system has strong applicability.
Round aluminum-shell batteries, standardized modules, and universal rack design facilitate large-scale production and assembly. Flexible system combination can meet various customized needs;
² Wide system voltage range, through different Series combinations provide battery systems with different voltage levels.
² Broad system capacity range, universal rack-mounted parallel combination can provide battery systems with various capacities. There are ranges from tens of kilowatts to several megabytes to choose from.
5． The system is easy to install and m*nt*n.
The modular design of system components and standard rack installation, and the front-end design of all terminal blocks, make installation and m*ntenance easy.
The parameters are as follows:

serial number	project		Parameters and requirements
1	battery information	Battery specifications and models	48V50Ah
2		Nominal capacity	50Ah
3		Battery module nominal voltage	50V
4		Single cell nominal voltage	3.2V
5		Single combination of battery modules	16 strings
6		Battery module weight (kg)	≈65
7	Charging parameters	Maximum charging current (A)	50
8		Battery module charging voltage range (V)	45～54
9		Battery module charging cut-off voltage	52.5V～54
10		Standard charging method	20A equal charge to 52.5V-54V float charge
11		Battery module charging time	5~6h (20A)
12	Discharge parameters	Maximum discharge current (A)	100
13		Battery module discharge voltage range (V)	54～45
14		Battery module discharge cut-off voltage	45V
15		Single cell discharge cut-off voltage	2.82V
16	Short circuit protection parameters	Short circuit protection current (A)	250A
17		Short circuit protection delay time (us)	500
18		Short circuit protection recovery method	Connect the charger
19	Self-consumption and sleep parameters	Internal circuit consumption during operation (mA)	≤70
20	Self-consumption and sleep parameters	Internal consumption during sleep (uA)	≤2000
twenty one	shell	shell material	Galvanized steel plate, surface sprayed
twenty two	Battery pack dimensions	Height (mm)	89
twenty three		Width(mm)	410 (total width with mounting ears), 440 (cabinet)
twenty four		Length(mm)	410 (cabinet depth)
25	equipment weight		24KG (battery)
26	work and storage	Operating temperature	Charging: 0～45℃; Discharging: -20～60℃
27		storage temperature	-10～35℃
28		Relative humidity	5%～85%
29	Management System (BMS)	Management system functions	Cell voltage management, total voltage management, charge and discharge temperature management, charge and discharge current management, battery balance management, overcharge protection, over-discharge protection, over-temperature protection, over-current protection, short-circuit protection, etc.

The BMS system of the lithium iron phosphate battery system is managed at three levels, namely pallet BMS (Tra# BMS), cabinet BMS (Rack BMS), and system BMS (S#stem BMS). The m*n functions of each level of BMS are as follows:
a) Tra# BMS (TBMS, pallet level, controls 20 individual cells, built into the module): monitors the voltage, temperature of individual cells and the total voltage of a single tray, and transmits the above information to the upper-level BMS in real time through the CAN protocol. Able to control the voltage balance of individual cells.
b) Rack BMS (RBMS, rack level, controls 10 or more TBMS, built in the switch box): Detects the total voltage and total current of the entire battery pack, and transmits the above information to the upper-level BMS in real time through the CAN protocol. It can display the capacity and health status of the battery during charging and discharging, predict the power, and calculate the internal resistance. Control the balance of relay switch and panel unit voltage.
c) S#stem BMS (SBMS, system level, controls up to 48 RBMS): Collects lower-level RBMS information and can estimate the rem*ning capacity and health status of the battery in real time, predict power, and calculate internal resistance. Communicate with host and external systems via RS-485 or Modbus-TCP/IP.
d) The functions implemented by each level of BMS are as follows:

Function		S#stem BMS	RackBMS	Tra# BMS
Detection	Rack voltage/current	-	○	-
	Cell voltage/temperature	-	-	○
	Module voltage	-	-	○
calculate	capacity estimate	○	○	-
	health status estimate	○	○	-
	Power prediction	○	○	-
	Resistance calculation	○	○	-
control	fan control	-	-	○
	switch control	-	○	-
	voltage balance	-	○	○
communication	CAN	○	○	○
communication	RS-485 or Modbus-TCP/IP	○	-	-

2.2.6 Combiner box
In the solar photovolt*c power generation system, in order to reduce the connection between the solar photovolt*c cell array and the inverter, the user can connect a cert*n number of photovolt*c cells with the same specifications in series to form a photovolt*c series, and then Then connect several photovolt*c series in parallel to the PVS series photovolt*c combiner box. After combining in the photovolt*c combiner box, they are output through the photovolt*c dedicated DC circuit breaker and used in conjunction with the photovolt*c inverter to form a complete photovolt*c power generation system.
DC fuses are installed in each path of the positive and negative poles of the photovolt*c array, and are then connected in parallel through the busbar. The positive DC fuses are connected in parallel with the busbar through a current sensor used to detect current ; the current sensor is used to detect current and realize the detection board connection for communication.
The photovolt*c combiner box current detection unit adopts an integrated structure design to centrally transmit the detection signals of several current detection components to the microcontroller, and the microcontroller then transmits the signals to the host computer. Through the address of the intelligent measurement and control module, it can be quickly positioned, which has the characteristics of simple and fast system m*ntenance, more economical operation and convenient on-site m*ntenance.
The combiner box has the following characteristics:
wall-mounted installation, the box body is bent from cold-rolled steel plates, and the thickness of the cold-rolled steel plates is 1.5mm. The box structure is sealed, dust-proof, and moisture-proof, with sufficient strength and rigidity. The surface spray p*nt and sealing materials are corrosion-resistant and oxidation-resistant. The protection grade is IP65, which meets the requirements for outdoor installation and use;
the combiner box is equipped with a photovolt*c array cable entry hole, which can simultaneously connect to 8 battery series (8 positive and 8 negative), and a DC output outlet hole (4 positive and 4 negative). And the ground wire leads out the cable hole, and the cable lead-out hole is installed with a rubber pad;
² Cold-rolled steel plate, protection grade IP65, meets the requirements of outdoor installation, and can be hung directly on the battery bracket;
² Can connect to 8 photovolt*c strings at the same time, each The maximum open circuit voltage of each photovolt*c string can reach DC1000V;
² The positive and negative poles of each photovolt*c string input circuit are equipped with high-voltage DC fuses, with a withstand voltage of up to DC1000V and a rated current of 15A;
² The positive pole of the DC bus output Special photovolt*c lightning protectors are installed between the ground, the negative pole and the ground, and between the positive and negative poles;
² The output end of the DC bus is equipped with a disconnectable DC circuit breaker;
² Lightning protector f*lure alarm;
² DC arc detection and cut-off output Function.
2.3 50KW energy storage bidirectional converter device The
energy storage inverter adopts advanced digital control technology, which optimizes the control performance and improves the reliability of the system. It is suitable for different battery charging and discharging needs, and has a modular design in structure. Easy to install and m*nt*n.
2.3.1 Its m*n performance characteristics are as follows:
Ø Can accept power grid dispatching, communication methods include RS485, CAN, Ethernet, etc.
Ø Multiple working modes such as grid-connected mode, off-grid mode, hybrid mode, etc.
Ø Multiple grid-connected charging and discharging methods, Including DC side charge and discharge mode and AC side charge and discharge mode
Ø It has low voltage ride-through and reactive power compensation functions
Ø It has independent frequency and voltage regulation functions and controlled frequency and voltage regulation functions
Ø Off-grid independent inverter function can be established by an energy storage inverter Microgrid system to ensure power supply for important loads
Ø Multiple inverters can be independently inverted in parallel
Ø Off-grid with three-phase unbalanced load capacity has strong capability
Ø 110% rated output power can achieve long-term operation
Ø Adopts AC and DC dual input power supply Redundant power supply mode ensures the high reliability of the control power supply
. The protection level is IP21, with anti-drip function and anti-condensation function.
Long product life: using film capacitor design, the life span reaches 30 years.
Technical parameters:

Product number	PWS1-50K
Battery side parameters
DC voltage range	500V~850V
DC maximum current	110A
Maximum DC power	55kw
AC grid connection parameters
Rated output power	50kW
Rated grid voltage	400V
Grid voltage range	±15%
Grid frequency range	50Hz/60Hz
Grid frequency range	±2.5Hz
AC rated current	72A
OutputTHDi	≤3%
Grid power factor	-1~+1
Exchange off-grid parameters
AC off-grid voltage	400V
AC voltage adjustable range	±10%
AC off-grid frequency	50Hz/60Hz
Off-grid output THDu	≤2% (linear load)
System parameters
The highest efficiency of the whole machine	97.3%
Wiring	Three-phase three-wire
Isolation method	Power frequency isolation
cooling method	Forced *r cooling
noise	70dB
temperature range	-20℃~50℃
Protection level	IP20
altitude	3000M
Humidity range	0~95%
size	8002160800
weight	465kg
communication method
show	touchscreen
Host computer communication method	ModBusTCP/IP
Communication Interface	Network port, RS485, CAN

2.3.2 Basic functions
2.3.2.1 Battery charge and discharge control
Ø The energy storage inverter can charge and discharge the battery. Charging power and discharging power can be selected by the operator. Various modes of charge and discharge instructions are modified by the host computer.
Ø Charging modes include constant current charging, constant voltage charging, constant power charging (DC), constant power charging (AC), etc.
Ø Discharge modes include constant current discharge, constant voltage discharge, constant power discharge (DC), constant power discharge (AC), etc.
2.3.2.2 Reactive power control
Ø The energy storage inverter can control the power factor and reactive power ratio. The control of power factor and reactive power ratio should be achieved by injecting reactive power.
Ø The power factor setting range is 0.9 (lead) - 0.9 (lag), and the reactive power proportion setting is up to 30% of the rated power.
Ø The inverter can realize this function when performing both charging and discharging functions. Reactive power settings are performed by the host computer and touch screen.
2.3.2.3 Independent inverter control of off-grid system
The energy storage inverter has an independent inverter function in the off-grid system, which can stabilize the output voltage and frequency and supply power to various loads. Independent inversion includes active mode and passive mode.
Active mode:
When the energy storage inverter is in independent inverter operation, the inverter will shut down after a recoverable fault occurs. When the fault recovers, no human operation is required. The inverter can automatically start independent inversion and restore the original operation. Operating status.
Passive mode:
When the inverter is in the independent inverter operating state, the inverter will shut down after a fault occurs. When the fault recovers, the start command needs to be manually reset before the inverter can start independent inversion.
2.3.3 Working status
The energy storage inverter has several statuses such as "initial shutdown", "stop", "standby", "running", "emergency shutdown", and "fault".
Initial shutdown
The initial shutdown mode refers to closing the battery side circuit breaker of the inverter, supplying power to the control circuit through the battery, and detecting whether the battery voltage meets the normal operating voltage.
In this mode, the system performs self-test. When the self-test passes, the inverter switches from initial shutdown mode to shutdown mode.
Shutdown:
When the inverter does not undergo any command operation or scheduling, the system is in a shutdown state.
In the shutdown mode, the inverter accepts the instruction operation and scheduling of the touch screen and the host computer. When the operating conditions are met, the inverter switches from shutdown to operation mode.
After running, if a stop command is received, the inverter will switch from running to stop state.
Standby
In stop or running mode, the inverter accepts the standby instruction operation and scheduling of the touch screen and the host computer, and can be converted to standby state. In the standby state, the AC and DC m*n contactors of the inverter are closed, and the system is in a hot standby state. When the touch screen or host computer performs command operations and scheduling, the inverter can quickly enter the corresponding state.
The
operation mode includes grid-connected mode and off-grid mode. The grid-connected mode is divided into charging and discharging. Off-grid mode includes active off-grid and passive off-grid.
In grid-connected mode, the inverter can perform power quality regulation and reactive power control. In off-grid mode, the inverter can provide stable voltage and frequency output to the load.
F*lure
When the energy storage system f*ls, the inverter will stop working, and the contactor on the AC and DC sides will be immediately disconnected to separate the m*n circuit of the machine from the battery, grid or load.
At this time, the system continues to monitor whether the fault is eliminated. If the fault is not eliminated, it will rem*n in the fault state; if the fault is eliminated, it will enter the shutdown state after 30 seconds by default and accept instructions and scheduling ag*n.
Emergency stop
"Emergency stop" mode refers to pressing the emergency stop button to stop the energy storage inverter in the event of a fault or crisis.
When it is necessary to start up ag*n, the emergency stop button must be released from the locked state before the energy storage inverter can be restarted.
Shutdown
If the energy storage inverter is in normal "running" mode and the user needs to stop the machine for routine m*ntenance or inspection operations, the host computer can issue a shutdown command to stop the energy storage inverter. And disconnect the contactor and circuit breaker on the AC and DC sides to ensure that the power is completely cut off internally.
State Switching
When the inverter is powered on and enters initial shutdown, the control system will complete a self-test to verify the integrity of the control and sensor systems.
The monitoring and protection functions start normally and the inverter enters shutdown state. In the shutdown state, the energy storage inverter blocks IGBT pulses and disconnects the AC and DC contactors. In the standby state, the energy storage inverter blocks the IGBT pulses, but closes the AC and DC contactors, and the inverter is in a hot standby state.
The energy storage inverter can be converted in different modes, and the conversion conditions that need to be met are shown in Figure 5-1.
2.3.4 Working mode
2.3.4.1 Mode introduction
The operating mode of the energy storage inverter can be divided into grid-connected mode and off-grid mode.
Grid-connected mode
In grid-connected mode, the inverter can realize charging and discharging functions.
Ø Charging includes constant current charging, constant voltage charging, constant power charging (DC), constant power charging (AC), etc.
Ø Discharge includes constant current discharge, limited voltage discharge, constant power discharge (DC), constant power discharge (AC), etc.
In addition, in the grid-connected mode, it also has functions such as power factor and reactive power adjustment, low voltage ride-through, active islanding, etc., and users
can set them as needed.
Off-grid mode
This mode can be set through the touch screen of the host computer or inverter. When the inverter is set to this mode, the inverter supplies
AC power supply with constant voltage and frequency.
Off-grid mode includes active mode and passive mode
. Active mode:
When the inverter is in independent inverter operation, the inverter will shut down after a recoverable fault occurs. When the fault is recovered, no human operation is required, and the inverter can start automatically. Independent inversion to restore the original operating state.
Passive mode:
When the inverter is in the independent inverter operating state, the inverter will shut down after a fault occurs. When the fault recovers, the start command needs to be manually reset before the inverter can start independent inversion.
2.3.4.2 Mode conversion
In the grid-connected mode, the energy storage inverter can switch between the charging and discharging functional states directly without entering the standby state.
The energy storage inverter must operate independently without a power grid.
2.3.5 Inverter function
2.3.5.1 Low Voltage Ride Through The
"Technical Regulations for Power Station Access to Power Systems " stipulates that large and medium-sized power stations should have cert*n low voltage ride through (Low Voltage Ride Through, abbreviated as LVRT) capabilities.
The specific low voltage ride through requirements are: when different types of faults or disturbances in the power system cause voltage drops at the power station's grid-connected point, within a cert*n voltage drop range and time interval, the power station can ensure continuous operation without being disconnected from the grid. In addition, the following requirements should be met.
Active power recovery:
For power stations that are not off-grid during power system faults, their active power should be restored quickly after the fault is cleared. From the moment the fault is cleared, the active power should be restored to the value before the fault with a power change rate of at least 30% of the rated power/second. .
Dynamic reactive power support capability:
During the low voltage ride-through process, the power station should also inject reactive current into the power system as needed. For power stations in the power station group that are connected to the power grid through a 220kV (or 330kV) power generation aggregation system to boost the voltage to a 500kV (or 750kV) voltage level, when a short-circuit fault occurs in the power system and causes a voltage drop, the power station should be able to inject electricity into the power grid. Dynamic reactive current that meets the requirements.
Zero voltage ride through capability:
When the voltage at the power station's grid connection point drops to 0, the power station should be able to operate continuously for 0.15 seconds without disconnecting from the grid.
2.3.5.2 Temperature derating function
When the ambient temperature is lower than 50℃, the inverter can run at 1.1 times overload condition for a long time; when the ambient temperature reaches 55℃, the inverter can still guarantee the rated power output; when the ambient temperature Above 65℃, the inverter enters protection mode.

Ambient temperature T	Inverter operating conditions
T≤50℃	The inverter can operate under 1.1 times overload condition for a long time
50℃<T≤55℃	The inverter operates with derating at a slope of 10kW/°C.
55℃<T≤65℃	The inverter operates at a derating rate of 50kW/°C.
T>65℃	The inverter enters protection mode; when the ambient temperature drops below 55°C, the inverter will automatically restart operation.

2.3.5.3 Protection function
The energy storage inverter has a complete protection function. When an abnormality occurs in the input voltage or power grid, it can effectively act to protect the safe operation of the energy storage inverter until the abnormality disappears and then continue. Network power generation. Protection items include:
# DC over/under voltage protection
When the DC voltage of the energy storage battery exceeds the allowable voltage range, the energy storage inverter will stop working, send out a warning signal, and display the fault type on the touch screen.
Energy storage inverters can quickly detect and respond to abnormal voltages.
# Grid over/under-voltage protection
When the energy storage inverter detects that the grid voltage exceeds the allowable voltage range, the energy storage inverter will stop working, send a warning signal, and display the fault type on the touch screen.
Energy storage inverters can quickly detect and respond to abnormal voltages.
# Grid over/under frequency protection
When the energy storage inverter detects that the grid frequency fluctuation exceeds the allowable range, the energy storage inverter will stop working and send out a warning signal. And the fault type is displayed on the touch screen.
Energy storage inverters can quickly detect abnormal frequencies and respond.
#Island protection
When the energy storage inverter detects that the grid voltage is 0 or the grid frequency exceeds the allowable range, the energy storage inverter will stop working, send a warning signal, and display the fault type on the touch screen.
Energy storage inverters can quickly detect and respond to abnormal voltages.

When the energy storage inverter is in the anti-islanding effect protection state, the high voltage inside the energy storage inverter still exists. If inspection and m*ntenance operations are performed, the circuit breaker must be turned off and discharged. Only operate after confirming safety.
# AC overcurrent protection
When the power of the energy storage battery exceeds the maximum allowable DC power of the energy storage inverter, the energy storage inverter will limit the current to operate at the maximum allowable AC power. When the AC current is detected to be greater than 1.2 times At the rated current, the energy storage inverter will stop working. After returning to normal, the energy storage inverter should be able to work normally.
# AC leakage current protection
energy storage inverter has a grounding protection function. A leakage current sensor is installed on the grounding cable. When the leakage current exceeds 2A, the machine will stop immediately. When the current is less than 1.5A, the protection can be eliminated. And the fault is displayed through the touch screen.
# Module over-temperature protection
The IGBT module of the energy storage inverter uses a high-precision temperature sensor, which can monitor the module temperature in real time. When the temperature is too high, the DSP will issue an instruction to stop the energy storage inverter. Protect the stable operation of equipment.
# Environmental over-temperature protection
uses a high-precision temperature sensor inside the energy storage inverter, which can monitor the temperature inside the machine in real time. When the temperature is too high, the DSP will issue an instruction to stop the energy storage inverter or derate it. output to protect the stable operation of the equipment.
# DC overcurrent protection
When the energy storage inverter detects that the DC current is greater than 1.2 times the rated current, the energy storage inverter will stop working, send a warning signal, and display the fault type on the LCD. After returning to normal, the energy storage inverter should be able to work normally.
# Phase Abnormality
When the energy storage inverter performs self-test during initial shutdown, shutdown, or fault conditions and finds that the three-phase voltage phase of the connected power grid is wrong, the energy storage inverter will issue a warning signal and display the fault type on the LCD. . After returning to normal, the energy storage inverter should be powered on ag*n and pass the self-test before it can work normally.
# AC voltage imbalance
When the energy storage inverter detects that the difference in three-phase AC voltage exceeds the allowable range, the energy storage inverter will stop working, send out a warning signal, and display the fault type on the LCD.
Energy storage inverters can quickly detect and respond to abnormal voltages.
# Transformer over-temperature
The transformer of the energy storage inverter uses a high-precision temperature sensor, which can monitor the module temperature in real time. When the temperature is too high, the DSP will issue an instruction to stop the energy storage inverter to protect the equipment. stable operation.
# Module fault
The IGBT module of the energy storage inverter has a self-protection function. When the module itself detects that the module has overcurrent, it can quickly send fault information to the DSP, and the DSP will issue an instruction to stop the energy storage inverter. At the same time, a warning signal is issued, and the fault type is displayed on the LCD.
# Fan f*lure
The fan of the energy storage inverter has an automatic detection function. When it is detected that the fan is not rotating, it can quickly send fault information to the DSP. The DSP will issue an instruction to stop the energy storage inverter and send out a warning signal at the same time. And the fault type is displayed on the LCD.
# AC/DC m*n contactor f*lure
When the energy storage inverter is in standby, grid-connected or off-grid operation, and it is detected that the AC/DC m*n contactor is disconnected, the energy storage inverter will stop working and send out a message at the same time. Warning signal, and the fault type is displayed on the LCD.
# AD sampling fault
When the energy storage inverter detects that the zero offset value of the sampling channel exceeds the allowable range during self-test, the energy storage inverter will send out a warning signal and display the fault type on the LCD.
# Polarity reverse fault
When the energy storage inverter detects that the DC voltage is negative, the energy storage inverter will send a warning signal and display the fault type on the LCD. 2.4 Power supply of

AC distribution cabinet system: - Power supply 3-phase 380 V AC, 50Hz N, PE; three-phase five-wire system; - Lighting system 220 V, 50 Hz, N, PE; - Control voltage 220 V, 50 Hz, N, PE; - Power system interface: 8 groups, 2 groups reserved
- Control system interface: 8 groups, 2 groups are reserved
to implement the following functions:
current protection;
micro-element access interface is reserved, with expansion capabilities.

2.5 7KW vertical AC charging pile
product features:
1. Stylish and simple appearance, compact size, waterproof design, suitable for installation in a variety of environments, easy to install;
2. Simple operation: swipe your card to start charging directly/scan the QR code with your mobile phone to start charging ;
3. Charging methods: automatic charging, quantitative, scheduled, and priced charging;
4. Operation management: local self-settlement operation;
5. Backend interface: CAN interface, GPRS/3G/4G wireless interface;
6. Payment method: mobile phone APP payment, card payment, WeChat/Alipay payment, etc.;
7. Standard: complies with the new national standard.
Scope of application:
7KW vertical AC charging pile is suitable for private villas, residential areas, commercial office buildings, new energy vehicle 4S stores, workshop debugging areas, urban complexes and other parking lots or urban public charging stations (private cars, small-capacity passenger cars ) and other situations where it can be charged slowly for a long time.
Technical Parameters

Det*led specifications	Product number	ACL007A
Charging equipment	Installation method	Vertical
	Equipment size	7242151500
	Wiring method	In and out
	Input voltage	AC220V±15%
	input frequency	50±3Hz
	The output voltage	AC220V±15%
	Maximum output current	32A
	Cable length	4m
	Measuring accuracy	Level 1
Electrical indicators	Current limiting protection value	≥110%
	Voltage stabilization accuracy	/
	Steady flow accuracy	/
	Ripple coefficient	/
	efficiency	/
	power factor	/
	Harmonic content THD	/
feature design	HMI	4.3-inch LCD display touch screen
	Charging mode	Automatic full charge/fixed battery/fixed amount/fixed time
	charging method	Swipe card to charge, scan QR code to charge
	payment method	Pay by card or scan QR code to pay
	Networking method	Ethernet 3/4G
Safe design	Safety standards	GB/T20234, GB/T18487, GB/T27930, NB/T33008, NB/T33002
Safe design	security function	Overvoltage protection, undervoltage protection, overload protection, short circuit protection, grounding protection, overtemperature protection, low temperature protection, lightning protection, emergency stop protection, leakage protection
Environmental indicators	Operating temperature	-25℃~+55℃
	Working humidity	5%~95% frost-free
	Working altitude	≤2000m
	Protection level	IP54
	cooling method	Naturally cold
	Noise control	≤60dB
	MTBF	100,000 hours

2.6 Supporting teaching resources
#1, online education course open platform:
1) This system is a diversified management platform for interoperable teaching. It integrates traditional platform systems and centralizes interoperable management to solve the problem of difficult management of multiple platforms and multiple accounts, and inability to disperse databases. Centralized statistics and other issues. The system includes: online academic management system, online course resource management platform, online exercise library platform, online examination and assessment platform, online video course management platform and online virtual simulation teaching management platform. It is a truly one-stop interoperable data centralized statistics!
2) Course resources: multiple micro-lecture videos are actually shot to collect teaching video materials, and are later filmed and packaged. The beginning of the film is about 10 seconds, the end of the film is about 5 seconds, the video size is not less than 1920*1080, and the video format is MP4, FLV, etc.; multiple virtual The simulation content is developed using the unit# engine and runs on the PC win system (win7, win8, win10, note not including win xp) software.
3) For the sake of uniformity of teaching, the online education platform and the practical tr*ning device are required to be made by the same manufacturer!
4) The supporting micro-course content should be no less than 30 hours.
#2. Laboratory Smart Electricity Safety Control System The
smart power management system has 7 major protection functions: over-temperature, short circuit, over-current, over-voltage, under-voltage, loss of voltage, and power limitation; the power supply has a one-key locking function to handle faults. , to prevent the leakage protector from closing, causing the risk of electric shock; the power supply has a fault locking function. When a fault occurs and causes a trip, the power cannot be powered on manually. The power can only be successfully powered on after the fault is cleared remotely; it can be powered on through wireless 4G and wired Ethernet Communicating with the mobile APP and PC cloud platform, the entire smart power management system in the classroom can run independently offline without a network.
1. Intelligent terminal: The intelligent power management system uses 32-bit ARM as the core, uses a 4.3-inch color touch screen as the human-computer interaction interface, monitors the operation of the device in real time, provides Zigbee, CAN and other communication modes, and has voice broadcast functions. It can monitor three-phase voltage, current, power, power factor, frequency, electric energy and other parameters in real time, and the LCD touch screen monitors the values. It can monitor the f*lure type and number of f*lures of the laboratory power supply; the equipment time management includes the display of the year, month, day and time; the user requests to turn on the equipment by swiping the card. After the PC side authorizes, the equipment can be started and used, and the PC side can reserve the time of the equipment. Start and stop!
2. Mobile APP: The power consumption status interface displays the current voltage, current, active and reactive power, electric energy, equipment temperature, leakage current value, etc. in real time; the power consumption data interface can intelligently search for the power consumption data of the past 2 years, and the setting interface can set limits Electric energy value, load value, equipment over-temperature value, over- and under-voltage value, over- and under-voltage recovery time value, etc. View alarm logs, operation logs, fault logs, etc. in the background. Control: The smart switch can be remotely controlled in the WeChat applet.
3. PC software: each device status information display, with multiple sub-interfaces, fault analysis, power consumption analysis, centralized management, personal center data management, user alarm location tracking and information statistics; with administrator information modification and permissions Management and other functions. All devices can be turned on and off with one click, and the switch of each device can be controlled individually!
4. Backend system: including account management, equipment management, rep*r management, user management, equipment management: ①, including monitoring management: real-time video monitoring of each classroom, one-click preview of the online and operating status of all equipment, and analysis of equipment usage and running time! ②. Cont*ns device nodes: it can display the location of the device, encoding name, mounting status, user editing, user query, etc.
5. Rep*r report management: Users can make remote rep*r reports, respond to equipment f*lure information, and edit rep*r reports. The background can perform remote m*ntenance and timely follow-up to effectively solve user equipment m*ntenance.
6. User management: It can connect the mobile phone number, perform one-to-one security encryption on the account, real-name authentication, prevent account leakage and theft, and connect the on-site data to the cloud platform back-end database management.
The functions must be demonstrated on site one by one, and valid and authoritative supporting documents must be provided to prove the reliability, safety, and advanced nature of the product.
#3. Simulation software:
1) New energy teaching system simulation software
A. Overview of multimedia teaching software
1. Through this software, you can systematically learn about solar photovolt*c silicon materials, cells, photovolt*c modules, photovolt*c module accessory materials, photovolt*c application products, etc. Series of photovolt*c knowledge content.
2. Equipped with text and animation displays to introduce the processing techniques and usage methods from raw materials to finished products including intermediate links.
3. The multimedia system comes with voice explanations, pictures, texts, and sounds to display explanations and play synchronously with the text described in the system to help teachers quickly write lesson plans for photovolt*c power generation courses and improve students' rapid mastery and rapid learning of new energy professional knowledge.
4. Multimedia software composition (1) M*n functions of
the solar photovolt*c silicon material explanation and display system 1. Can display the physical silicon materials used in various solar photovolt*c cells; 2. Equipped with text and animation to display the production processes and usage methods of various materials 3 , Table of Contents (about 11 hours) ² Basic introduction to photovolt*c silicon products² Properties of silicon elements: including physical properties, chemical properties of silicon, classification and application of silicon² Properties of silicon compounds: including silicon dioxide, silicon monoxide, and halogenation of silicon Materials, trichlorosilane, silane, etc.² The growth principle and shape of silicon² Silicon purification methods: including chemical purification and physical purification methods² Polycrystalline silicon preparation and its defects and impurities: including metallurgical silicon grade preparation, high-purity polysilicon preparation, Preparation of cast polycrystalline silicon² Preparation of monocrystalline silicon and its defects and impurities: including growth of monocrystalline silicon, impurities and defects of monocrystalline silicon² Monocrystalline silicon and polycrystalline silicon processing methods² Silicon thin film materials: including amorphous silicon thin film materials, polycrystalline silicon thin films Materials² Silicon material testing and analysis methods: including conductive model measurement, resistivity measurement, minority carrier lifetime measurement, Hall coefficient measurement, mobility measurement, chemical performance analysis, crystal structure analysis, etc.² Standards for silicon material testing and analysis (GB standard, UL standard, IEC standard, SEMI standard) (2) M*n functions of solar photovolt*c cell explanation and display system 1. Can display various solar photovolt*c cells;
2. Equipped with text and animation to show the production processes and usage methods of various solar cells
3. Contents (about 9 class hours)
Ø Introduction to the basic situation of solar cells
Ø Basic structural analysis of solar cells
Ø Classification of solar cells
Ø Crystalline silicon solar cells Production process: including introduction to production methods and production equipment
Ø M*n raw materials for crystalline silicon solar cell production
Ø Solar cell testing technology and methods: including introduction to testing methods and testing equipment
Ø Solar cell testing standards
(3) Solar photovolt*c modules explanation and Display system
1. Can display various solar photovolt*c modules;
2. Equipped with text and animation to show the production process and usage methods of various photovolt*c modules
3. Catalog (about 10 class hours)
² Basic introduction to solar cell components
² Classification of solar cell components And the advantages and disadvantages of various modules²
Introduction to the production process of solar cell modules and related equipment²
Evaluation standards for solar
cell modules² Test methods and testing equipment for
solar cell modules² Development direction of solar cell modules
(4) Solar photovolt*c module ancillary materials
M*n functions of the explanation and display system
1. Can display various solar photovolt*c module accessories;
2. Equipped with text and animation to show the production process and usage methods of various photovolt*c module accessories
3. Catalog (about 7 class hours)
² Solar module accessories Facility introduction²
Specific requirements for tempered glass for solar modules²
Specific requirements for solar modules for bracket aluminum profiles²
Specific requirements for solar modules for EVA sealant²
Specific requirements for solar modules for TPT backsheet²
Detection methods for solar module
ancillary facilities² Test standards for solar module ancillary facilities
* B. Contents of display and explanation (pictures, text, and sounds):
2.1 Solar photovolt*c application product explanation and display system (about 5 class hours)
2.1.1 Solar power generation system:
2.1.2 Household solar power generation DC system multimedia TV
2.1.3 Solar portable power supply:
2.1.4 Solar insecticidal lamp
2.1.5 Solar warning lamp
2.1.6 Solar camping lamp
2.2 Basic principles of solar photovolt*c power generation
2.3 Introduction to components of solar photovolt*c power generation system
2.4 Solar photovolt*c power generation System design method
2.5 Solar photovolt*c power station construction method
2.5.1, preliminary project inspection
2.5.2, preliminary project construction information and approval documents
Phase 1: Feasibility study phase
Second phase: Obt*n approval documents from relevant provincial/municipal departments
The third stage: Obt*ning the construction permit
2.5.3, Project construction drawing design
2.5.4, Project implementation and construction
2.5.5, Necessary conditions before electrification
2.6 Introduction to solar photovolt*c grid-connected power station
2.6.1, Brief description of photovolt*c grid-connected power station
2.6 .2. Photovolt*c grid-connected power station equipment composition
2.6.2. Photovolt*c grid-connected power station equipment function
2.7 Household solar power station construction plan
2.7.1. Project overview
2.7.2. Plan design (with det*led plan design)
(1) User load information
(2) System scheme design
(3) Benefit calculation:
2.8 Introduction to the basic principles of the inverter
2.9 Introduction to the basic principles of the controller
M*n functions:
In small photovolt*c systems, it is used to protect the battery; in large and medium-sized systems, it balances the energy of the photovolt*c system , protect the battery and the normal operation of the entire system, etc.;
the photovolt*c controller should have the following functions:
① Prevent the battery from overcharging and over-discharging, and extend the battery life;
② Prevent the polarity of solar panels or battery arrays and batteries from being reversed;
③ Prevent the load from being reversed , controller, inverter and other equipment internal short circuit;
④ Has breakdown protection caused by lightning strikes;
⑤ Has temperature compensation function
⑥ Display various working status of the photovolt*c power generation system, including: battery (group) voltage, load status, battery array working status, auxiliary power supply status, ambient temperature status, fault alarm, etc.
5. According to different circuit methods, photovolt*c controllers can be divided into parallel type, series type, pulse width modulation type, multi-channel control type, etc.;
6. According to component input power: small power type, medium power type, high power type. And special controllers (such as lawn lamp controllers), etc.;
Photovolt*c controller performance characteristics:
1. Low-power photovolt*c controller
Ø The m*n switching device of the controller;
Ø Use pulse width modulation (PWM) control technology;
Ø With single-channel, Dual load output and multiple working modes;
Ø With multiple protection functions;
Ø Changes in system working conditions, rem*ning battery power, etc.;
Ø With temperature compensation function
2. Medium power photovolt*c controller
Ø Controller with load current greater than 15A For medium power controller.
Ø System status display;
Ø Programmable load control mode;
Ø Multiple protection functions;
Ø Float voltage temperature compensation function;
Ø Fast charging function;
Ø Ordinary charge and discharge working mode, light control on/off, light Control on/time control off working mode
3. High-power photovolt*c controller
Ø The high-power photovolt*c controller adopts a microcomputer chip control system, which has stronger control functions and can realize complex process control .
The m*n technical parameters of the photovolt*c controller:
system voltage, maximum charging current, number of input channels of the solar cell array, circuit loss, full disconnection or overvoltage shutdown voltage (HVD), undervoltage disconnection or undervoltage shutdown voltage ( LVD), battery charging float voltage, temperature compensation, use or working environment temperature range, other protection functions.
Rated load current of the controller:
that is, the DC output current output by the controller to the DC load or inverter. This data must meet the input requirements of the load or inverter.
2) Mitsubishi PLC and inverter simulation teaching software
1. Product technical requirements
software PLC products are based on the Labor and Labor Safety Industry Standards of the People's Republic of China (LD/T81.2-2006) " M*ntenance Electrician " Vocational Skills Tr*ning and Appr*sal Equipment Technology Specification" is designed and developed in accordance with the relevant professional teaching syllabus of the Ministry of Education, including 26 projects including programmable controllers and frequency converters. Each project is equipped with: tr*ning purpose, tr*ning device, device layout, I/ Various modules such as O distribution, T-shaped diagram, circuit connection, and power-on operation basically cover all the knowledge and skills requirements for programmable controllers and inverters in the national m*ntenance electrician intermediate, senior, and technician qualification assessments. The software takes skills as the core, projects as the guide, tasks as the driver, workplace environment as the background, operation steps as the m*n line, and student interactive tr*ning as the m*n body. It has the characteristics of three-dimensional visualization, intelligence, and full interaction, integrating professional, situational, and It combines process, interactivity and flexibility, and is extremely cost-effective. This software can not only be used as a practical tr*ning teaching application, but its large number of principle animation demonstrations can also be used as teaching assistant software materials in classroom teaching. It provides rich and indispensable teaching resources for skills tr*ning, identification informatization and modernization of electrical automation, mechatronics and other electrical and electronic
majors. 2. Product content requirements

level	content	Remark
intermediate	PLC working principle control, program execution process, motor start and stop control, motor forward and reverse control, motor cycle forward and reverse control, three-speed motor control
advanced	Star/angle starting control, motor forward and reverse energy consumption braking control, lantern cycle control, digital tube lighting control, large and small ball conveyor control, simple manipulator control
technician	Control of electroplating production lines, control of automatic traffic lights, control of belt conveyor lines, control of industrial washing machines, control of constant pressure water supply systems, control of trolleys, control of parking spaces, PU operation of inverters, and EXT of inverters operation, combined operation of the inverter
comprehensive	Operation of handheld programmer, X62W universal milling and turning, Z3050 radial drilling machine, CA6140 lathe

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