Wind-electricity-participated electric power system frequency modulation method and system

Abstract

The invention provides a wind-electricity-participated electric power system frequency modulation method and system. The wind-electricity-participated electric power system frequency modulation method includes the steps: S1, according to the practical wind speed operated by a wind turbine generator set, determining the operating area of the wind turbine generator set; S2, according to the practical frequency of the electric power system, determining the frequency offset of the electric power system; and S3, according to the operating area of the wind turbine generator set, based on the frequency offset of the electric power system, utilizing the wind turbine generator set to modulate the frequency of the electric power system. According to the operating area of the wind turbine generator set, the wind-electricity-participated electric power system frequency modulation method and system can utilize the wind turbine generator set to modulate the frequency of the electric power system, thus being able to fully exert the self frequency modulation capability of the wind turbine generator set and maintain stable frequency of the electric power system on the premise of not influencing the operating benefit of the wind turbine generator set.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, and more specifically, to a method and system for wind power to participate in power system frequency regulation. Background technique [0002] At present, wind power generation has been paid more and more attention by countries all over the world because of its environmental protection and the ability to generate huge electric energy. In 2016, the newly installed capacity of wind power in the world was 54600MW; by the end of 2016, the cumulative installed capacity of wind power in the world was 486 million kilowatts. The installed capacity of wind power continues to increase, but the lack of wind power frequency regulation capability is a major factor restricting the efficiency of wind power utilization. Large-scale wind power grid integration has brought a series of challenges to the safe and stable operation of the power system, including frequency stability. [0003] I...

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Problems solved by technology

[0004] The present invention provides a method and system for wind power to participate in power system frequency modulation in order to overcome the deficiency in the prior art that the frequency modulation capability of wind turbines cannot be fully utilized.

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