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Energy storage power station subsystem debugging structure, debugging control method and debugging method

A technology for energy storage systems and energy storage power stations, which is applied in the direction of single-network parallel feeding arrangements and AC network load balancing, and can solve problems such as low commissioning efficiency, affecting the commissioning progress of energy storage systems, and lack of power transmission conditions, etc., to achieve The effect of improving debugging efficiency

Active Publication Date: 2019-10-22
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the construction of the energy storage power station, the sub-system of the energy storage power station does not have the power transmission conditions during commissioning, and lacks the power required for commissioning, such as figure 1 When the mid-10kV bus has not completed the power transmission debugging, the first storage switch and the grid-connected switch are disconnected, so the energy storage system does not meet the grid-connected debugging conditions, and needs to be debugged through the traditional secondary increase method, which is low in debugging efficiency and functional debugging. The scope is limited, which affects the commissioning progress of the energy storage system

Method used

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  • Energy storage power station subsystem debugging structure, debugging control method and debugging method
  • Energy storage power station subsystem debugging structure, debugging control method and debugging method
  • Energy storage power station subsystem debugging structure, debugging control method and debugging method

Examples

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Embodiment 1

[0041] combine figure 1 and figure 2 As shown, this embodiment is a commissioning structure of an energy storage power station subsystem. Among multiple energy storage systems, the converter unit of the debugged energy storage system operates in P / Q mode, and at least one of the other energy storage systems The converter unit of the energy system operates in V / F mode to form an island debugging environment to provide debugging power for the energy storage system being debugged.

[0042] In practical applications, an energy storage power station may include multiple energy storage systems, but when debugging, it is necessary to consider the power limit of the converter unit and the power stored in the energy storage battery, so it is preferably used in other systems outside the debugged energy storage system The converter unit with only one energy storage system operates in V / F mode. That is, each commissioning only controls the converter units of two of the energy storage s...

Embodiment 2

[0046] refer to image 3 As shown, this embodiment is a debugging control method for an energy storage subsystem, including:

[0047] S21. Obtain information about the energy storage system designated as the current debugging object, so as to determine the current debugging object;

[0048] S22, control the converter unit of at least one energy storage system other than the current debugging object to operate in the V / F mode; at the same time control the converter unit of the energy storage system of the current debugging object in the P / Q mode, and V / F The grid-connected operation of the energy storage systems operating in this mode forms an isolated island debugging environment of power self-loop.

[0049] Similarly, considering the power limitation in practical applications, only one converter unit of the energy storage system other than the current debugging object is controlled to run in V / F mode during each debugging.

[0050] The energy storage system information of t...

Embodiment 3

[0052] This embodiment is a debugging control device for an energy storage subsystem, including:

[0053] The current debugging object information acquisition module is used to obtain the information of the energy storage system designated as the current debugging object, so as to determine the current debugging object;

[0054] and a converter working mode control module, which is used to control the converter unit of at least one energy storage system other than the current debugging object to operate in V / F mode, and at the same time control the converter unit of the energy storage system of the current debugging object to operate in V / F mode. In the P / Q mode, the grid-connected operation with the energy storage system operating in the V / F mode forms an island debugging environment of power self-loop.

[0055] The debugging control method of the energy storage sub-system in Embodiment 2 and the debugging control device of the energy storage sub-system in Embodiment 3 can re...

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Abstract

The invention relates to the technical field of energy storage power station regulation and control and relates to an energy storage power station subsystem debugging structure and method, a debuggingcontrol method and a debugging control device. During debugging, a converter unit of a debugged energy storage system is controlled to operate in a P / Q mode, and the converter unit of at least one ofthe other energy storage systems operates in a V / F mode, so an island debugging environment is formed. Electric energy stored in a battery in the energy storage system is used for providing a debugging power source for the debugged energy storage system, so a power self-loop energy storage system debugging framework is achieved, and then IO testing, data sampling checking, system self-checking and other debugging work on the energy storage system of a debugging object can be carried out. The structure and the method can be used for installing and debugging the energy storage system in the construction process of the energy storage power station, power-on debugging can be achieved, and the debugging efficiency of the energy storage power station is improved.

Description

technical field [0001] The invention relates to the technical field of regulation and control of energy storage power stations in electric power systems, in particular to a debugging structure, a debugging method and a debugging control method of an energy storage power station subsystem utilizing power self-loop. Background technique [0002] An energy storage unit of a conventional energy storage power station consists of two sets of energy storage systems, the battery container contains two sets of battery systems, and the converter container contains two sets of converters and a step-up transformer, such as figure 1 . During the construction of the energy storage power station, the sub-system of the energy storage power station does not have the power transmission conditions during commissioning, and lacks the power required for commissioning, such as figure 1 When the mid-10kV bus has not completed the power transmission debugging, the first storage switch and the grid...

Claims

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Application Information

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IPC IPC(8): H02J3/32H02J3/38
CPCH02J3/32H02J3/38H02J3/388
Inventor 吴盛军袁宇波刘建坤周前卜强生赵静波汪成根史明明郑明忠费骏韬
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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