Virtual synchronous machine damping configuration method and device

A technology of a virtual synchronous machine and a configuration method, which is applied in circuit devices, photovoltaic power generation, AC network circuits, etc., can solve the problems of low inertia, low efficiency, and low damping of distributed power sources connected to the distribution network.

Inactive Publication Date: 2016-06-15
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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However, the existing research results have not proposed a clear and effective damping configuration method that matches the energy storage ca

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  • Virtual synchronous machine damping configuration method and device
  • Virtual synchronous machine damping configuration method and device
  • Virtual synchronous machine damping configuration method and device

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[0099] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0100] The embodiment of the present invention provides a method for configuring damping of a virtual synchronous machine, see figure 1 , The steps include:

[0101] S101. Establish the rotor motion equation of the virtual synchronous machine;

[0102] Refer to figure 2 , Using the method corresponding to the parameters in the rotor movement equation of the synchronous generator to establish the rotor movement equation of the virtual synch...

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Abstract

The invention provides a virtual synchronous machine damping configuration method and device. The virtual synchronous machine damping configuration method comprises the steps that the rotor movement equation of a virtual synchronous machine is established; the output active power expression of the virtual synchronous machine is acquired; an output active power variation expression is calculated; a small-signal model of output active power and load side frequency is acquired according to the output active power variation expression and the rotor movement equation of the virtual synchronous machine; a response situation expression of output active power of the virtual synchronous machine is acquired according to the small-signal model; a response situation time domain expression of output active power of the corresponding three working states of the virtual synchronous machine is respectively acquired according to the response situation expression; and the extremum value of the time domain expression is solved so that an output active power maximum value expression corresponding to the working states is obtained. The clear and effective damping configuration method for matching the energy storage capacity of the virtual synchronous machine is provided so that damping configuration for the virtual synchronous machine is facilitated for people.

Description

technical field [0001] The invention belongs to the field of distributed power generation control, and in particular relates to a virtual synchronous machine damping configuration method and device. Background technique [0002] In recent years, due to the increasingly prominent world energy problems and the increasing environmental pressure, distributed power generation forms such as photovoltaic power generation and wind power generation have developed rapidly. Most of the output of distributed generation is DC, so it needs to be connected to the distribution network through grid-connected inverters. The development of distributed generation has made the penetration rate of inverters in the power system higher and higher, resulting in the occurrence of traditional power system structures. a huge change. The access of distributed power to the distribution network will bring about the problems of low inertia and low damping of the power system. In order to solve this probl...

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Application Information

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IPC IPC(8): H02J3/38H02J3/24
CPCH02J3/24H02J3/381H02J3/383Y02E10/56
Inventor 唐酿盛超翁洪杰孙闻刘昌陈萌肖湘宁陶顺袁敞黄辉朱以顺陈锐张俊峰朱良合罗运松张毅超吴晓宇刘正富安然然赵艳军
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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