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Frequency response control method and device of power electronic equipment

A technology of frequency response and power electronics, applied in the field of power grid, can solve the problems of not fully considering the advantages of flexible power output of power electronic equipment, failing to maximize the frequency modulation capability of power electronic equipment, etc., to achieve optimal frequency modulation effect, power The effect of flexible output and improved FM capability

Pending Publication Date: 2022-03-01
TSINGHUA UNIV +1
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  • Application Information

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Problems solved by technology

[0003] However, the core idea of ​​the existing virtual inertia control method is to imitate the rotor inertia response characteristics of synchronous generators, which does not fully consider the advantages of flexible power output of power electronic equipment, and fails to maximize the frequency modulation capability of power electronic equipment.

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  • Frequency response control method and device of power electronic equipment
  • Frequency response control method and device of power electronic equipment
  • Frequency response control method and device of power electronic equipment

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Embodiment Construction

[0048] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. 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.

[0049] figure 1 It shows the frequency response control method of the power electronic equipment provided by the embodiment of the present invention, the method includes:

[0050] Step 110: Establish a transfer function for frequency response control of power electronic equipment; wherein, the transfer function takes frequency deviation as input and frequency modulation power as output, and ...

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Abstract

The invention provides a frequency response control method and device for power electronic equipment, and the method comprises the steps: building a transfer function for the frequency response control of the power electronic equipment; the optimal value combination of the proportionality coefficient and the time delay coefficient in the transfer function is determined by taking the minimum maximum frequency deviation and the minimum output active power peak value of the power electronic equipment as targets, and the advantage of flexible power output of the power electronic equipment is fully considered; by using the transfer function, a better frequency modulation effect can be realized on the basis that the output active power of the power electronic equipment is lower, so that the frequency modulation capability of the power electronic equipment is improved.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a frequency response control method and device for power electronic equipment. Background technique [0002] As the penetration rate of renewable energy such as wind power and photovoltaics continues to increase, large-capacity DC projects continue to be put into operation, and the frequency security of the power grid is highlighted. Using virtual inertia control of power electronic equipment (including wind power, photovoltaics, battery energy storage and other related equipment) Realizing fast frequency response to improve the frequency regulation capability of the power system is an effective measure to ensure the frequency security of the power grid under the new form. [0003] However, the core idea of ​​the existing virtual inertia control method is to imitate the rotor inertia response characteristics of synchronous generators, which does not fully consider the advanta...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24
CPCH02J3/241H02J2203/20
Inventor 陈磊何廷一李胜男闵勇吴水军贾天下徐飞
Owner TSINGHUA UNIV