Method and system for controlling battery energy storage power station for primary frequency modulation of power grid

A technology of battery energy storage and grid frequency, which is applied in the direction of AC network load balancing, reducing/preventing power oscillation, etc. It can solve the problems of high cost of battery energy storage, inability to meet primary frequency regulation for a long time, and small configured energy.

Pending Publication Date: 2019-06-14
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0008] However, the cost of battery energy storage is high, and the configured energy is small. Under the condition of primary frequency regulation for a long time, the energy state of the ener

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  • Method and system for controlling battery energy storage power station for primary frequency modulation of power grid
  • Method and system for controlling battery energy storage power station for primary frequency modulation of power grid
  • Method and system for controlling battery energy storage power station for primary frequency modulation of power grid

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Embodiment Construction

[0101] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0102] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0103] An embodiment of the present invention provides a battery energy storage power station control method for primary frequency regulation of the power grid, such as figure 1 As sho...

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Abstract

The invention relates to a method and a system for controlling a battery energy storage power station for primary frequency modulation of a power grid. The method comprises the steps of determining the frequency modulation requirement of the power grid according to the frequency deviation change rate of the power grid; determining the energy demand of the battery energy storage power station according to the battery charge information of the battery energy storage power station; and adjusting the frequency modulation power of the battery energy storage power station based on the power grid frequency modulation requirement and the energy demand of the battery energy storage power station. According to the method, the rapid response characteristic of the battery energy storage power stationis utilized, and fast response and rapid recovery are carried out on the frequency change of the power grid, so that the steady-state performance of primary frequency modulation is improved; and meanwhile, the battery energy state of the battery energy storage power station is optimized, so that the battery energy storage power station has the capability of primary frequency modulation for a longtime, and the transient performance of primary frequency modulation is improved.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a control method and system for a battery energy storage power station used for primary frequency regulation of a power grid. Background technique [0002] The frequency of the power system is an important control parameter for the operation of the power system. It reflects the balance between the active power of the power generation and the load, and is closely related to the safety and efficiency of the power equipment of the majority of users and the power generation and supply equipment itself. [0003] The primary frequency regulation of the power system is implemented by the speed regulation system of the prime mover. It responds quickly to system frequency changes and mainly undertakes those fast and small amplitude random load fluctuations. For load mutations under abnormal conditions, primary frequency regulation can play a certain role. A buffering effect, its existence can...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02J3/32
Inventor 崔红芬杨波叶季蕾庄俊薛金花桑丙玉李官军胡安平周晨李培强李铁姜枫崔岱徐宇张彤刁涵彬
Owner CHINA ELECTRIC POWER RES INST
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