Rapid power coordination control method and device for high-capacity battery energy storage system
A battery energy storage system, coordinated control technology, applied in the direction of flexible AC power transmission system, AC network load balancing, single-network parallel feeding arrangement, etc. Computing and processing capabilities, many communication links, etc.
Active Publication Date: 2020-04-07
NR ELECTRIC CO LTD +2
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Problems solved by technology
The existing control system mainly communicates with the PCS through the monitoring system, and a protocol conversion device is added in the middle. There are many communication links and a large delay; fast power control of capable systems
Method used
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[0088] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0089] The invention provides a fast power coordinated control method for a large-capacity battery energy storage system, which includes two parts: a central coordinated control method and a sub-coordinated control method. details as follows:
[0090] Central coordinated control methods such as figure 1 shown, proceed as follows:
[0091] Step S01. Collect information about the main circuit of the energy storage system, including the grid-connected point voltage U of the energy storage system abc_pcc and grid-connected point current I abc_pcc , and calculate the grid-connected point frequency f according to the grid-connected point voltage and current _pcc , active power P _pcc and reactive power Q _pcc .
[0092] Step S02. Obtain t...
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The invention discloses a rapid power coordination control method and device for a high-capacity battery energy storage system. The control method comprises a central coordination control method and asub-coordination control method, and achieves the one-key start and stop and rapid power coordination control functions of the energy storage system. The device comprises a central coordination control device and a sub-coordination control device, and by utilizing the coordination control devices provided by the invention, the rapid power coordination control of the megawatt-level and above capacity battery energy storage system is realized. The rapid power coordination control method and device are suitable for the battery energy storage system with megawatt and above capacity, one-key startand stop operation and rapid power coordination control of the high-capacity battery energy storage system are achieved, different control strategies can be set according to different user requirements, and multipurpose development of the energy storage system is achieved.
Description
technical field [0001] The invention relates to a fast power coordination control method and device for a large-capacity battery energy storage system, and belongs to the technical field of grid-connected operation of battery energy storage systems. Background technique [0002] In recent years, with the high penetration rate of new energy connected to the grid, due to its intermittency, volatility and randomness, the grid is facing increasing challenges to safe and stable operation, which also hinders the grid's consumption of new energy. [0003] The battery energy storage system has the characteristics of bidirectional energy flow and fast power response, and is an important method to solve the problem of new energy consumption. As the proportion of new energy access is getting higher and higher, the capacity of the corresponding energy storage system is getting larger and larger. Large-capacity battery energy storage systems generally use a large number of energy storag...
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Login to View More IPC IPC(8): H02J3/46H02J3/32
CPCH02J3/46H02J3/32Y02E40/10
Inventor华新强丁勇石祥建李旭蒋顺平刘为群
OwnerNR ELECTRIC CO LTD