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An energy storage control method and system for improving grid inertia level

An energy storage system and energy storage control technology, applied in the direction of AC network load balancing, reducing/preventing power oscillation, etc., can solve the problems that it is difficult to suppress power oscillation at the same time, slow down the frequency change rate, and slow frequency recovery speed

Active Publication Date: 2021-09-10
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +4
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Problems solved by technology

However, in the related technology, only the constant virtual inertia control technology is proposed. When the load is disturbed, it is difficult to suppress the power oscillation and slow down the frequency change rate at the same time. After the load disturbance is over, the frequency recovery speed is slow, which has considerable limitations.

Method used

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  • An energy storage control method and system for improving grid inertia level
  • An energy storage control method and system for improving grid inertia level
  • An energy storage control method and system for improving grid inertia level

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Embodiment Construction

[0031] 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 creative efforts fall within the protection scope of the present invention.

[0032] Refer below figure 1 The energy storage control method for improving the grid inertia level according to the embodiments of the present application is described.

[0033] The energy storage system includes n energy storage units, n>1, that is, the energy storage system includes n energy storage units, and the n energy storage units can be ...

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Abstract

The present invention provides an energy storage control method and system for improving the inertia level of the power grid. The energy storage control method includes: determining the virtual total inertia coefficient of the energy storage system based on the active power change rate of the energy storage system; The virtual total inertia coefficient and the given active power coefficient of the energy storage unit determine the virtual inertia coefficient of the energy storage unit. The energy storage control method of the present invention, through the coordinated distribution of the active power and the virtual moment of inertia of the energy storage system, can improve the grid inertia level, effectively improve the violent oscillation of the energy storage output active power returning to a stable value, suppress the frequency from changing too fast, and realize The system runs stably.

Description

technical field [0001] The invention relates to the field of energy storage control, and more specifically, to an energy storage control method and system for improving the inertia level of a grid. Background technique [0002] With the popularization of smart grids and the rapid development of distributed energy sources, the role of energy storage systems has become increasingly prominent, and its applicable fields include every link of power generation, transmission, transformation, distribution, and use in the power system. At present, the application of energy storage systems in power grids is still in the process of exploration and testing. Relevant fields at home and abroad are working hard to conduct comprehensive research and calculations on energy storage technologies and costs, while considering the needs of society and the nature of the power grid itself. Actively explore and test effective ways to apply energy storage systems in power grids. The energy storage s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/28H02J3/24
CPCH02J3/24H02J3/28
Inventor 梅生伟郑天文谢毓广陈来军刘当武薛小代高博陈锋陈凡李伟林其友计长安蒋力波
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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