A wind-solar-storage energy exchange control method and system for a virtual synchronous generator

An energy storage system and virtual synchronization technology, applied in photovoltaic power generation, wind power generation, electrical components, etc., can solve problems such as voltage or frequency fluctuations and low dispatchability
CN108599232BActive Publication Date: 2021-04-30CHINA ELECTRIC POWER RES INST +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRIC POWER RES INST
Publication Date
2021-04-30

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Abstract

A wind-solar-storage energy exchange control method and system for a virtual synchronous generator, including: determining the deviation power according to the grid dispatching demand and the power output of the distributed system; supplementing the deviation power based on the control strategy of the energy switch; wherein the energy switch The control strategy includes: distributed system and centralized energy storage system control strategy. The technical solution proposed by the invention has strong practicability, can be used in micro-grid systems with different distributed energy combinations, improves the stability of power system operation, and realizes active support for large power grids.
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Description

technical field

[0001] The invention belongs to the technical field of grid-connected distributed power generation, and in particular relates to a wind-solar-storage-storage energy exchange control method and system for a virtual synchronous generator. Background technique

[0002] At present, the global energy crisis is intensifying and the problem of climate warming is becoming more and more prominent. Under this background, the power generation technology including distributed energy has been developed rapidly. Load and grid dispatching requirements. But at the same time, there are many grid-connected inverters in the distributed generation system, which brings great challenges to the safe and stable operation of the distribution network. Considering the randomness, intermittentness, and low dispatchability of distributed energy in the microgrid system, when they are integrated into the entire microgrid system through inverters, there will be large fluctuations in voltag...

Claims

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