CN210327045U - Hybrid energy storage wind power generation system - Google Patents

Hybrid energy storage wind power generation system Download PDF

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Publication number
CN210327045U
CN210327045U CN201920594103.3U CN201920594103U CN210327045U CN 210327045 U CN210327045 U CN 210327045U CN 201920594103 U CN201920594103 U CN 201920594103U CN 210327045 U CN210327045 U CN 210327045U
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wind power
switch
grid
energy storage
bus
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蔡万通
洪潮
周保荣
赵勇
左郑敏
余浩
许亮
姚文峰
郭知非
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CSG Electric Power Research Institute
Grid Planning Research Center of Guangdong Power Grid Co Ltd
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CSG Electric Power Research Institute
Grid Planning Research Center of Guangdong Power Grid Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/10—Flexible AC transmission systems [FACTS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

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Abstract

The utility model discloses a hybrid energy storage wind power generation system, include: the system comprises a superconducting magnetic energy storage module, a storage battery, a switch-energy release control device, a grid-connected inverter and a switch; one end of the switch is connected with the grid-connected bus, and the other end of the switch is simultaneously connected with the wind power plant bus and one end of the grid-connected inverter; the other end of the grid-connected inverter is connected with the wind driven generator; one end of the superconducting magnetic energy storage module is connected with a bus of the wind power plant; one end of the switch-energy release control device is connected with the switch through a wind power plant bus, and the other end of the switch-energy release control device is connected with one end of the storage battery; the other end of the storage battery is connected with a grid-connected bus; the switch-energy release control device is carried on a computing device terminal, and the computing device terminal stores a control program executed by the switch-energy release control device and used for controlling the on-off of the switch and a control program used for controlling the discharging of the superconducting magnetic energy storage module and the storage battery. The utility model discloses can improve wind-powered electricity generation's the characteristic of being incorporated into the power networks, improve wind power generation system's reliability.

Description

Hybrid energy storage wind power generation system
Technical Field
The utility model relates to a new forms of energy electricity generation field especially relates to a hybrid energy storage wind power generation system.
Background
Due to the geographical position distribution and wind resource characteristics of the wind power plant, the wind power has randomness and volatility under different time scales. In the minute level, the output fluctuation quantity in the wind power plant is relatively small, but the fluctuation is random and frequent, and is random; under the hour level, the output fluctuation range of the wind power cluster formed by combining a plurality of wind power plants is large, but the output fluctuation range is relatively gentle, the frequency is small, and the output fluctuation range is represented as volatility.
At present, a method for reducing the influence of the volatility and randomness of wind power on a power grid is to apply an energy storage device to a wind power generation system, so that the energy storage device can actively participate in dynamic power exchange of a power supply system, the power quality and the power supply reliability are improved, and the wind power grid-connected characteristic is improved.
In the prior art, an energy storage device applied to a wind power generation system is provided with: (1) a superconducting magnetic energy storage device; (2) a storage battery; however, the following technical problems exist in the prior art: superconducting magnetic energy storage devices are expensive and difficult to apply in a wind farm on a large scale; if the accumulator is charged and discharged frequently, its life will be shortened greatly.
Therefore, how to provide a suitable energy storage method according to characteristics of wind power and different energy storage devices is a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a hybrid energy storage wind power generation system can improve the characteristic of being incorporated into the power networks of wind-powered electricity generation, improves wind power generation system's reliability.
The embodiment of the utility model provides a hybrid energy storage wind power generation system, include: the system comprises a superconducting magnetic energy storage module, a storage battery, a switch-energy release control device, a grid-connected inverter and a switch;
one end of the switch is connected with the grid-connected bus, and the other end of the switch is simultaneously connected with the wind power plant bus and one end of the grid-connected inverter; the other end of the grid-connected inverter is connected with the wind driven generator;
one end of the superconducting magnetic energy storage module is connected with the wind power plant bus;
one end of the switch-energy release control device is connected with the switch through a wind power plant bus, and the other end of the switch-energy release control device is connected with one end of the storage battery; the other end of the storage battery is connected with the grid-connected bus;
the switch-energy release control device is mounted on a computing device terminal, and the computing device terminal stores a control program executed by the switch-energy release control device and used for controlling the on-off of the switch and a control program used for controlling the discharging of the superconducting magnetic energy storage module and the storage battery.
As an improvement of the scheme, the wind power station further comprises at least one grid-connected inverter, one end of each grid-connected inverter is connected with the wind power station bus, and the other end of each grid-connected inverter is connected with the wind driven generator; and each grid-connected inverter is connected in parallel.
As an improvement of the above scheme, the superconducting magnetic energy storage module and the grid-connected inverter are located in the wind power plant.
The embodiment of the utility model provides a hybrid energy storage wind power generation system compares with prior art, has following beneficial effect:
the superconducting magnetic energy storage module is used for compensating frequent and small-capacity changes in the wind power plant, the storage battery is used for compensating mild and large-capacity changes of the wind power cluster, and the superconducting magnetic energy storage module and the storage battery are mixed to form mixed energy storage; the superconducting magnetic energy storage module can be matched with a storage battery, so that wind power fluctuation which is small in fluctuation and frequent can be reduced, wind power fluctuation which is large in fluctuation and gentle can be reduced, the quality of electric energy is improved, and the grid-connected characteristic of wind power is improved; the wind power plants are dynamically coordinated and controlled through the switch-energy release control device, the wind power plants can be independently and autonomously controlled, the influence of the fault of one or more wind power generators on other wind power generators is isolated, the wind power generators can be uniformly and cooperatively controlled, and the energy storage device is utilized to the maximum extent.
Drawings
Fig. 1 is a schematic structural diagram of a hybrid energy storage wind power generation system provided by an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the hybrid energy storage wind power generation system applied to grid connection according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, it is a schematic diagram of a hybrid energy storage wind power generation system provided by an embodiment of the present invention, including: the system comprises a superconducting magnetic energy storage module 1, a storage battery 2, a switch-energy release control device 3, a grid-connected inverter 4 and a switch 5;
one end of the switch 5 is connected with a grid-connected bus 6, and the other end of the switch is simultaneously connected with a wind power plant bus 7 and one end of a grid-connected inverter 4; the other end of the grid-connected inverter 4 is connected with a wind driven generator 8;
one end of the superconducting magnetic energy storage module 1 is connected with a wind power plant bus 7;
one end of the switch-energy release control device 3 is connected with the switch through a wind power plant bus 7, and the other end of the switch-energy release control device is connected with one end of the storage battery 2; the other end of the storage battery 2 is connected with a grid-connected bus 6;
the switch-release control device 3 is mounted on a computing device terminal, and the computing device terminal stores a control program executed by the switch-release control device 3 for controlling the on-off of the switch and a control program for controlling the discharging of the superconducting magnetic energy storage module 1 and the storage battery 2.
Furthermore, the wind power station system also comprises at least one grid-connected inverter 4, wherein one end of each grid-connected inverter 4 is connected with a wind power station bus 7, and the other end of each grid-connected inverter 4 is connected with a wind driven generator 8; each grid-connected inverter 4 is connected in parallel with each other.
Further, the superconducting magnetic energy storage module 1 and the grid-connected inverter 4 are located in a wind power plant.
In a specific embodiment, the superconducting magnetic energy storage module is mounted with a superconducting magnetic energy storage device.
Referring to fig. 2, it is a schematic structural diagram of the hybrid energy storage wind power generation system applied to grid connection according to an embodiment of the present invention. The superconducting magnetic energy storage module 1 is arranged on a wind power plant bus 7 in each wind power plant, can store energy without loss, has high response speed and is used for compensating frequent and small-capacity changes in the wind power plant; meanwhile, when the wind power generation amount is excessive and exceeds the capacity limit of the superconducting magnetic energy storage module 1, the energy is sent to the storage battery 2 for storage.
The storage battery 2 is connected with the grid-connected bus 6, can collect the part of the superconducting magnetic energy storage module 1 exceeding the capacity limit, and is used for compensating the gentle and large capacity change of the wind power cluster, so that frequent power exchange with a wind power plant is avoided, and the service life is prolonged.
The superconducting magnetic energy storage module 1 and the storage battery 2 form hybrid energy storage, so that the number of the superconducting magnetic energy storage modules 1 can be reduced, the investment is reduced, the service life of the storage battery 2 can be prolonged, and the sufficient energy storage capacity and the high electric energy utilization efficiency are ensured.
The utility model provides a hybrid energy storage wind power generation system comprises wind power places with autonomy, namely all wind power stations in the system are independent and equal, no membership exists between the wind power stations, and each wind power station can independently complete respective task without being influenced by other wind power stations; the switch-energy release control device controls the on-off of the switch, so that each wind power plant can be connected and disconnected from the grid, each wind power plant can work coordinately, and the coordinated operation of the whole system is realized through unified cooperative control.
Specifically, when the voltage of the bus 7 of the wind power plant is reduced due to the fault of one or more wind driven generators 8, the switch-energy release control device receives a control instruction configured according to the actual operation condition of other wind power plants, rapidly controls the storage battery 2 or the superconducting magnetic energy storage module 1 to discharge, and improves the bus voltage of the wind power plant where the fault wind driven generator 8 is located, namely unified cooperative control; however, if one or more wind driven generators 8 are seriously failed, and interlocking tripping of other wind driven generators 8 can be caused, the switch-energy release control device receives a control instruction to disconnect the switch between the wind power plant bus 7 and the grid-connected bus 6, the wind power plant is cut off, the normal operation of other wind power plants is ensured, and after the failure of the failed wind power plant is eliminated, the switch-energy release control device receives the instruction, controls the switch to be closed, and the wind power plant recovers to operate, namely, is controlled autonomously. Therefore, the interlocking grid disconnection accident of the wind driven generator 8 caused by the fact that the fault on a certain wind driven generator 8 is spread and diffused to other wind driven generators 8 through the transmission line is avoided.
The embodiment of the utility model provides a hybrid energy storage wind power generation system compares with prior art, has following beneficial effect:
the superconducting magnetic energy storage module is used for compensating frequent and small-capacity changes in the wind power plant, the storage battery is used for compensating mild and large-capacity changes of the wind power cluster, and the superconducting magnetic energy storage module and the storage battery are mixed to form mixed energy storage; the superconducting magnetic energy storage module can be matched with a storage battery, so that wind power fluctuation which is small in fluctuation and frequent can be reduced, wind power fluctuation which is large in fluctuation and gentle can be reduced, the quality of electric energy is improved, and the grid-connected characteristic of wind power is improved; the wind power plants are dynamically coordinated and controlled through the switch-energy release control device, the wind power plants can be independently and autonomously controlled, the influence of the fault of one or more wind power generators on other wind power generators is isolated, the wind power generators can be uniformly and cooperatively controlled, and the energy storage device is utilized to the maximum extent.
It should be noted that the above-described device embodiments are merely illustrative, and units illustrated as separate components may or may not be physically separate, and components illustrated as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is communication connection between them, and specifically, the connection relationship can be implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (3)

1. A hybrid energy storage wind power generation system, comprising: the system comprises a superconducting magnetic energy storage module, a storage battery, a switch-energy release control device, a grid-connected inverter and a switch;
one end of the switch is connected with the grid-connected bus, and the other end of the switch is simultaneously connected with the wind power plant bus and one end of the grid-connected inverter; the other end of the grid-connected inverter is connected with the wind driven generator;
one end of the superconducting magnetic energy storage module is connected with the wind power plant bus;
one end of the switch-energy release control device is connected with the switch through a wind power plant bus, and the other end of the switch-energy release control device is connected with one end of the storage battery; the other end of the storage battery is connected with the grid-connected bus;
the switch-energy release control device is mounted on a computing device terminal, and the computing device terminal stores a control program executed by the switch-energy release control device and used for controlling the on-off of the switch and a control program used for controlling the superconducting magnetic energy storage module and the discharging of the storage battery.
2. The hybrid energy storage wind power generation system according to claim 1, further comprising at least one grid-tied inverter, each grid-tied inverter having one end connected to the wind farm bus and the other end connected to the wind power generator; and each grid-connected inverter is connected in parallel.
3. The hybrid energy storage wind power generation system of claim 1, wherein the superconducting magnetic energy storage module and the grid-tied inverter are located within the wind farm.
CN201920594103.3U 2019-04-26 2019-04-26 Hybrid energy storage wind power generation system Active CN210327045U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920594103.3U CN210327045U (en) 2019-04-26 2019-04-26 Hybrid energy storage wind power generation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920594103.3U CN210327045U (en) 2019-04-26 2019-04-26 Hybrid energy storage wind power generation system

Publications (1)

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CN210327045U true CN210327045U (en) 2020-04-14

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CN (1) CN210327045U (en)

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