Wind power generation energy storage system

Abstract

The utility model discloses a wind power generation energy storage system, which belongs to the technical field of wind power generation, comprises a wind power generator, a voltage stabilization control unit, a battery management unit, a battery pack and an energy storage inverter, and solves the technical problems of modularization and easy expansion and maintenance of the wind power generation energy storage system. According to the utility model, all functional units of the wind power generation system, such as voltage stabilization control, rectification, protection, battery management and cooling systems, are independent into modules through modular design. Each module is provided with a standardized interface and can be flexibly configured, expanded and maintained according to actual requirements, so that the complexity of the system is reduced, the convenience of maintenance is improved, and comprehensive monitoring and protection of the system are realized by integrating various sensors and protection equipment. And each protection unit can be independently replaced and upgraded, so that the safety and the reliability of the system are enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power generation, and particularly relates to a wind power generation energy storage system. Background Art

[0002] With the popularization of renewable energy, wind power generation has gradually become one of the main clean energies. However, there are still some problems and limitations in traditional wind power generation systems in practical applications, mainly including the following points:

[0003] Low integration and poor scalability: Existing wind power generation systems usually adopt a centralized design, and the coupling degree between each functional module is relatively high, making it difficult to configure and expand flexibly. This design not only increases the complexity of the system but also makes subsequent maintenance and function upgrading difficult.

[0004] Incomplete system heat dissipation: Key equipment in wind power generation systems will generate a large amount of heat during long-term operation. If the heat dissipation is not timely or sufficient, it is easy to cause equipment overheating, which in turn affects the normal operation of the system and the lifespan of the equipment. However, traditional systems usually lack effective temperature monitoring and heat dissipation measures. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a wind power generation energy storage system, which solves the technical problem of improving the modularity and easy expansion and maintenance of the wind power generation energy storage system.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A wind power generation energy storage system includes a wind turbine generator, a voltage stabilization control unit, a battery management unit, a battery pack, and an energy storage inverter. The voltage stabilization control unit includes a three-phase transformer, a rectifier, a voltage stabilization unit, a power supply module, a protection unit, a cooling system, a temperature sensor, and an energy management control unit;

[0008] The output end of the wind turbine generator is connected to the primary side of the three-phase transformer, the secondary side of the three-phase transformer is connected to the input end of the rectifier, the output end of the rectifier bridge is connected to the input end of the voltage stabilization unit, the output end of the voltage stabilization unit is respectively connected to the power supply module and the protection unit, the protection unit is connected to the battery management unit, and the battery management unit is connected to the energy storage inverter;

[0009] The battery pack is connected to the battery management unit;

[0010] The protection unit, the battery management unit, the energy storage inverter, the cooling system, and the temperature sensor are all connected to the energy management control unit, and the power supply module supplies power to the energy management control unit and the cooling system.

[0011] Preferably, the voltage stabilization control unit is deployed in a cabinet. The temperature sensor is used to detect the temperature value in the cabinet. The cooling system is a cabinet fan group, and the cabinet fan group includes several fans.

[0012] Preferably, the model of the wind turbine is Siemens SWT-3.6-130, the model of the rectifier is SKD 100 / 16, and the model of the energy storage inverter is SMA Sunny Island 8.0H.

[0013] Preferably, the voltage stabilization unit includes a lightning arrester, a circuit breaker, and a power supply module. The protection unit includes a voltage sensor, a current sensor, and Relay A. The power supply module includes a DC power supply and Relay B. The energy management control unit includes a PLC controller, an AD expansion module, and a communication expansion module;

[0014] Both the AD expansion module and the communication expansion module are connected to the PLC controller;

[0015] The output end of the rectifier is connected to the input end of the power supply module through a circuit breaker. A lightning arrester is also provided at the output end of the rectifier, and a voltage sensor is provided at the input end of the power supply module. The voltage sensor is used to detect the voltage value at the input end of the power supply module;

[0016] The output end of the power supply module is connected to the battery management unit through the normally open contact group of Relay A. The coil of Relay A is connected to an output port of the PLC controller;

[0017] The current sensor is provided at the output end of the power supply module. The current sensor is used to detect the output current at the output end of the power supply module;

[0018] The voltage sensor and the current sensor are respectively connected to two AD ports of the AD expansion module;

[0019] The input end of the DC power supply is connected to the output end of the power supply module. The output end of the DC power supply outputs 24V power supply and 12V power supply respectively. The 24V power supply supplies power to the PLC controller. An output port of the PLC controller is connected to the coil of Relay B. The 12V power supply supplies power to the cabinet fan group through a set of normally open contact groups of Relay B;

[0020] The battery management unit is connected to a 485 interface RS485-1 of the communication expansion module through a 485 bus. The energy storage inverter is connected to the Ethernet interface TCP / IP of the PLC controller through a network cable. The temperature sensor is connected to another 485 interface RS485-2 of the communication expansion module through another 485 bus.

[0021] Preferably, the model of the lightning arrester is DEHNventil M2, the model of the circuit breaker is NSX100, and the model of the power supply module is S6000-100 / 48 power supply module;

[0022] The DC power supply includes a DC-DC power supply module A that converts 48V to 12V and a DC-DC power supply module B that converts 48V to 24V. The input ends of the DC-DC power supply module A and the DC-DC power supply module B are both connected to the output end of the power supply module. The output end of the DC-DC power supply module A outputs the 12V power supply, and the DC-DC power supply module B outputs the 24V power supply;

[0023] The model of the DC-DC power supply module A that converts 48V to 12V is CFDR12-48S12, and the model of the DC-DC power supply module B that converts 48V to 24V is CFDR12-48S24;

[0024] The model of the current sensor is MIK-DZI-10A, and the model of the voltage sensor is MIK-DZV-250;

[0025] The model of the PLC controller is S7-1200, the model of the AD expansion module is SM 1231, and the model of the communication expansion module is CM 1241; the model of the temperature sensor is BSR-VD+RS.

[0026] Preferably, the battery management unit is a BMS system.

[0027] A wind power generation energy storage system according to the present utility model solves the technical problems of improving the modularization and easy expansion and maintenance of the wind power generation energy storage system. The present utility model independently forms each functional unit of the wind power generation system, such as voltage stabilization control, rectification, protection, battery management, and cooling system, into modules through modular design. Each module has a standardized interface and can be flexibly configured, expanded, and maintained according to actual needs, thereby reducing the complexity of the system and improving the convenience of maintenance. By integrating a variety of sensors and protection devices, comprehensive monitoring and protection of the system are realized. Each protection unit can be independently replaced and upgraded, enhancing the safety and reliability of the system. In addition, the cooling system adopts a modular fan group design, which can dynamically adjust the working state of the heat dissipation module according to the temperature change inside the cabinet to ensure the stable operation of the system in various environments. The present utility model not only simplifies the installation and debugging process but also enables the system to easily perform module replacement and upgrade during operation. Users can replace or add different modules according to actual needs to realize the expansion of system functions and meet future development needs. Description of the Drawings

[0028] Figure 1It is the system architecture diagram of the present utility model;

[0029] Figure 2 It is the wiring schematic diagram of the voltage stabilization control unit of the present utility model. Specific embodiments

[0030] Composed of Figure 1 - Figure 2 A wind power energy storage system shown in the figure, including a wind turbine, a voltage stabilization control unit, a battery management unit, a battery pack, and an energy storage inverter.

[0031] The model of the wind turbine is Siemens SWT-3.6-130, and the model of the energy storage inverter is SMA Sunny Island 8.0H.

[0032] The Siemens SWT-3.6-130 model wind turbine converts wind energy into three-phase alternating current.

[0033] The voltage stabilization control unit includes a three-phase transformer, a rectifier, a voltage stabilization unit, a power supply module, a protection unit, a cooling system, a temperature sensor, and an energy management control unit;

[0034] Including a three-phase transformer, a rectifier, a voltage stabilization unit, a power supply module, a protection unit, a cooling system, and a temperature sensor, etc. The three-phase alternating current output by the wind turbine is stepped down by the three-phase transformer and then converted into direct current by the rectifier. The rectified direct current is stably output through the voltage stabilization unit and supplies power to the energy management control unit and the cooling system in the system through the power supply module. The protection unit monitors and protects the voltage and current to ensure the safe operation of the system.

[0035] The voltage stabilization control unit is deployed in a cabinet. The temperature sensor is used to detect the temperature value in the cabinet. The cooling system is a cabinet fan group, and the cabinet fan group includes several fans.

[0036] The model of the rectifier is SKD 100 / 16.

[0037] The output end of the wind turbine is connected to the primary side of the three-phase transformer, the secondary side of the three-phase transformer is connected to the input end of the rectifier, the output end of the rectifier bridge is connected to the input end of the voltage stabilization unit, the output end of the voltage stabilization unit is respectively connected to the power supply module and the protection unit, the protection unit is connected to the battery management unit, and the battery management unit is connected to the energy storage inverter;

[0038] The battery pack is connected to the battery management unit; the battery management unit is a BMS system.

[0039] The protection unit, the battery management unit, the energy storage inverter, the cooling system, and the temperature sensor are all connected to the energy management control unit, and the power supply module supplies power to the energy management control unit and the cooling system.

[0040] The voltage stabilization unit includes a lightning arrester, a circuit breaker, and a power supply module. The protection unit includes a voltage sensor, a current sensor, and Relay A. The power supply module includes a DC power supply and Relay B. The energy management control unit includes a PLC controller, an AD expansion module, and a communication expansion module;

[0041] Both the AD expansion module and the communication expansion module are connected to the PLC controller;

[0042] The output end of the rectifier is connected to the input end of the power supply module through a circuit breaker. A lightning arrester is also provided at the output end of the rectifier. The lightning arrester is used for surge protection, and the circuit breaker is used for overvoltage and overcurrent protection. A voltage sensor is also provided at the input end of the power supply module. The voltage sensor is used to detect the voltage value at the input end of the power supply module;

[0043] The voltage value collected by the voltage sensor represents the power state directly output by the wind turbine. If the fluctuation is too large, the PLC controller can disconnect the power supply circuit before the BMS system through Relay A, thereby protecting the subsequent BMS system and energy storage inverter.

[0044] The output end of the power supply module is connected to the battery management unit through the normally open contact group of Relay A. The coil of Relay A is connected to an output port of the PLC controller;

[0045] The current sensor is provided at the output end of the power supply module. The current sensor is used to detect the output current at the output end of the power supply module;

[0046] The current sensor is used to detect the DC current state of the 48V power supply, which can represent the working state of the power supply module. If the PLC finds that the output of the current sensor is abnormal, it can disconnect the power supply circuit before the BMS system through Relay A.

[0047] The voltage sensor and the current sensor are respectively connected to two AD ports of the AD expansion module;

[0048] The input end of the DC power supply is connected to the output end of the power supply module. The output end of the DC power supply outputs a 24V power supply and a 12V power supply respectively. The 24V power supply supplies power to the PLC controller. An output port of the PLC controller is connected to the coil of Relay B. The 12V power supply supplies power to the cabinet fan group through a set of normally open contact groups of Relay B;

[0049] The battery management unit is connected to a 485 interface RS485-1 of the communication expansion module through a 485 bus. The energy storage inverter is connected to the Ethernet interface TCP / IP of the PLC controller through a network cable. The temperature sensor is connected to another 485 interface RS485-2 of the communication expansion module through another 485 bus.

[0050] The model of the lightning arrester is DEHNventil M2, the model of the circuit breaker is NSX100, and the model of the power supply module is S6000-100 / 48 power supply module;

[0051] The DC power supply includes a DC-DC power supply module A that converts 48V to 12V and a DC-DC power supply module B that converts 48V to 24V. The input ends of the DC-DC power supply module A and the DC-DC power supply module B are both connected to the output end of the power supply module. The output end of the DC-DC power supply module A outputs the 12V power supply, and the DC-DC power supply module B outputs the 24V power supply;

[0052] The model of the DC-DC power supply module A that converts 48V to 12V is CFDR12-48S12, and the model of the DC-DC power supply module B that converts 48V to 24V is CFDR12-48S24;

[0053] The model of the current sensor is MIK-DZI-10A, and the model of the voltage sensor is MIK-DZV-250;

[0054] The model of the PLC controller is S7-1200, the model of the AD expansion module is SM 1231, and the model of the communication expansion module is CM 1241; the model of the temperature sensor is BSR-VD+RS.

[0055] The Siemens SWT-3.6-130 wind turbine generates 690V three-phase alternating current. The three-phase transformer steps down the 690V three-phase alternating current to about 70V to 100V three-phase alternating current. The rectifier is a three-phase rectifier, and its output DC voltage is about 92.4V DC. The input voltage of the power supply module S6000-100 / 48 is between 85V and 115V, and the output is 48VDC. The 48VDC supplies power to the CFDR12-48S12, CFDR12-48S24, and BMS systems respectively. The BMS system is used to manage the charging and discharging of the battery pack, and its output is connected to the energy storage inverter. The output of the energy storage inverter provides power to the load.

[0056] The PLC controller communicates with the BMS system and the energy storage inverter through the 485 bus and the network cable respectively, and can real-time monitor the working status of the BMS system and the energy storage inverter.

[0057] The temperature sensor is used to measure the temperature value in the cabinet. The PLC controller can adjust the cabinet temperature through the cabinet fan group to prevent high-temperature fires.

[0058] In this embodiment, the three-phase transformer, rectifier, voltage stabilizing unit, power supply module, cooling system, temperature sensor, protection unit, and energy management control unit are all deployed in the same cabinet. Its modular design allows users to replace each module individually, greatly simplifying the maintenance work and making it easy to determine the location of the fault point.

[0059] A wind power energy storage system described in the present utility model solves the technical problem of improving the modularity and easy expansion and maintenance of the wind power energy storage system. Through modular design, each functional unit of the wind power system, such as voltage stabilizing control, rectification, protection, battery management, and cooling system, is made into an independent module. Each module has a standardized interface and can be flexibly configured, expanded, and maintained according to actual needs, thereby reducing the complexity of the system and improving the convenience of maintenance. By integrating a variety of sensors and protection devices, comprehensive monitoring and protection of the system are achieved. Each protection unit can be independently replaced and upgraded, enhancing the safety and reliability of the system. In addition, the cooling system adopts a modular fan group design and can dynamically adjust the working state of the heat dissipation module according to the temperature change inside the cabinet to ensure the stable operation of the system in various environments. The present utility model not only simplifies the installation and debugging process but also enables easy module replacement and upgrade during the operation of the system. Users can replace or add different modules according to actual needs to achieve the expansion of system functions and meet future development needs.

Claims

1. A wind power generation energy storage system, characterized in that: It includes a wind turbine, a voltage stabilization control unit, a battery management unit, a battery pack and an energy storage inverter. The voltage stabilization control unit includes a three-phase transformer, a rectifier, a voltage stabilization unit, a power supply module, a protection unit, a cooling system, a temperature sensor and an energy management control unit; The output end of the wind turbine is connected to the primary side of the three-phase transformer, the secondary side of the three-phase transformer is connected to the input end of the rectifier, the output end of the rectifier bridge is connected to the input end of the voltage stabilizing unit, the output end of the voltage stabilizing unit is respectively connected to the power supply module and the protection unit, the protection unit is connected to the battery management unit, and the battery management unit is connected to the energy storage inverter; The battery pack is connected to the battery management unit; The protection unit, the battery management unit, the energy storage inverter, the cooling system and the temperature sensor are all connected to the energy management control unit, and the power supply module supplies power to the energy management control unit and the cooling system.

2. A wind power generation energy storage system as claimed in claim 1, characterized in that: The voltage stabilization control unit is deployed in a cabinet, the temperature sensor is used to detect the temperature value in the cabinet, and the cooling system is a cabinet fan group, which includes several fans.

3. A wind power generation energy storage system as claimed in claim 1, characterized in that: The model of the wind turbine is Siemens SWT-3.6-130, the model of the rectifier is SKD 100 / 16, and the model of the energy storage inverter is SMASunnyIsland 8.0H.

4. A wind power generation energy storage system as claimed in claim 2, characterized in that: The voltage stabilizing unit includes a lightning arrester, a circuit breaker and a power supply module, the protection unit includes a voltage sensor, a current sensor and a relay A, the power supply module includes a DC power supply and a relay B, and the energy management control unit includes a PLC controller, an AD expansion module and a communication expansion module; Both the AD expansion module and the communication expansion module are connected to the PLC controller; The output end of the rectifier is connected to the input end of the power module through a circuit breaker, the output end of the rectifier is also provided with a lightning arrester, and the input end of the power module is also provided with a voltage sensor, and the voltage sensor is used to detect the voltage value of the input end of the power module; The output end of the power module is connected to the battery management unit through the normally open contact group of relay A, and the coil of relay A is connected to an open output port of the PLC controller; The current sensor is arranged at the output end of the power module, and the current sensor is used to detect the output current of the output end of the power module; The voltage sensor and the current sensor are respectively connected to two AD ports of the AD expansion module; The input end of the DC power supply is connected to the output end of the power module, and the output end of the DC power supply outputs 24V power and 12V power respectively. The 24V power supplies power to the PLC controller. An output port of the PLC controller is connected to the coil of relay B. The 12V power supplies power to the cabinet fan group through a group of normally open contacts of relay B. The battery management unit is connected to a 485 interface RS485-1 of the communication extension module via a 485 bus, the energy storage inverter is connected to the Ethernet interface TCP / IP of the PLC controller via a network cable, and the temperature sensor is connected to another 485 interface RS485-2 of the communication extension module via another 485 bus.

5. A wind power generation energy storage system as claimed in claim 4, characterized in that: The model of the lightning arrester is DEHNventilM2, the model of the circuit breaker is NSX100, and the model of the power module is S6000-100 / 48 power module; The DC power supply includes a 48V to 12V DC-DC power supply module A and a 48V to 24V DC-DC power supply module B, the input end of the DC-DC power supply module A and the input end of the DC-DC power supply module B are both connected to the output end of the power supply module, the output end of the DC-DC power supply module A outputs the 12V power supply, and the DC-DC power supply module B outputs the 24V power supply; The model of the 48V to 12V DC-DC power module A is CFDR12-48S12, and the model of the 48V to 24V DC-DC power module B is CFDR12-48S24; The model of the current sensor is MIK-DZI-10A, and the model of the voltage sensor is MIK-DZV-250; The model of the PLC controller is S7-1200, the model of the AD expansion module is SM 1231, the model of the communication expansion module is CM 1241; the model of the temperature sensor is BSR-VD+RS.

6. A wind power generation energy storage system as claimed in claim 1, characterized in that: The battery management unit is a BMS system.

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