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Wind power plant PI controller parameter setting method and device

A parameter tuning and controller technology, which is applied to electric controllers, controllers with specific characteristics, etc., and can solve problems such as poor optimization effect, slow iterative convergence speed, and poor performance of PI controllers.

Pending Publication Date: 2019-05-21
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0004] In order to overcome the disadvantages of poor optimization effect, poor PI controller performance, slow iterative convergence speed and easy to fall into local extremum in the above-mentioned prior art, the present invention provides a wind farm PI controller parameter tuning method and device, for each The parameters of the PI controller are subjected to an orthogonal test to obtain the value range of each param

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  • Wind power plant PI controller parameter setting method and device
  • Wind power plant PI controller parameter setting method and device
  • Wind power plant PI controller parameter setting method and device

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Embodiment 1

[0074] Embodiment 1 of the present invention provides a parameter tuning method for the PI controller of a wind farm. The wind farm includes a wind power generation control system and a double-fed asynchronous wind generator DFIG. The wind power generation control system includes a STATCOM Both the wind generator and the static synchronous compensator include a plurality of PI controllers, and the specific flow chart of Embodiment 1 of the present invention is as follows figure 1 As shown, the specific process of the method is as follows:

[0075] S101: Carry out an orthogonal test on the parameters of each PI controller to obtain the value range of each parameter;

[0076] S102: Initialize the parameters based on the value range;

[0077] S103: Determine parameter tuning results by using a particle swarm optimization algorithm based on the initialized parameters.

[0078] In the above S101, an orthogonal test is performed on the parameters of each PI controller, specificall...

Embodiment 2

[0108] Based on the same inventive concept, Embodiment 2 of the present invention also provides a wind farm PI controller parameter setting device. The wind farm includes a wind power generation control system and a doubly-fed asynchronous wind generator. The wind power generation control system includes a static synchronous compensator, a dual Both the feed-type asynchronous wind generator and the static synchronous compensator include multiple PI controllers. The device provided by Embodiment 2 of the present invention includes an orthogonal test module, an initialization module and a determination module. The functions of the above modules are described in detail below illustrate:

[0109] Orthogonal test module, used for carrying out orthogonal test to the parameter of each PI controller, obtains the value range of each parameter;

[0110] An initialization module, configured to initialize parameters based on the value range;

[0111] The determination module is configure...

Embodiment 3

[0135] Embodiment 3 of the present invention provides a parameter tuning method for a wind farm PI controller. The wind farm includes a wind power generation control system and a double-fed asynchronous wind generator. The wind power generation control system includes a static synchronous compensator and a double-fed asynchronous wind generator. and static synchronous compensators include multiple PI controllers. The structure diagram of the wind farm is as follows: figure 2 as shown, figure 2 in, U PCC is the voltage of the common connection point, L is the equivalent inductance of the connected reactor, R is the equivalent resistance of the connected reactor, STATCOM is the static synchronous compensator, DFIG is the doubly-fed asynchronous wind turbine, and GSC is the grid-side converter , RSC is the rotor-side converter, and the doubly-fed asynchronous wind generator part includes 6×1.667MW doubly-fed asynchronous wind generators under the same working conditions.

[...

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Abstract

The invention provides a wind power plant PI controller parameter setting method and device, and the method comprises the steps: carrying out the orthogonal test of the parameters of each PI controller of a wind power plant, and obtaining the value range of each parameter; initializing parameters based on the value range; on the basis of the initialized parameters, adopting a particle swarm optimization algorithm to determine the setting result of the parameters. The optimization effect obtained through the method and the performance of the PI controller are good, the iteration convergence speed is greatly increased, and the situation of falling into a local extreme value is avoided. The chaotic orthogonal particle swarm optimization algorithm adopted by the invention can reasonably determine the optimization range of each parameter, the optimization direction and the corresponding weight, meanwhile, the initial value quality is improved, the number of iterations is effectively reduced, a better compensation effect is achieved on the terminal voltage of the common connection point between the wind power plant and the power grid, and meanwhile the output characteristic based on thedoubly-fed asynchronous wind driven generator is effectively improved.

Description

technical field [0001] The invention relates to the field of new energy technologies, in particular to a method and device for parameter setting of a PI controller of a wind farm. Background technique [0002] Compared with traditional fossil energy, wind power, as a clean energy, has attracted much attention due to its advantages of no pollution, no emission, and environmental protection. Double-fed asynchronous wind generator (Double-Fed Induction Generator, DFIG) is one of the mainstream models of wind farms. The back-to-back converter control system in double-fed asynchronous wind generator consists of multiple proportional integral (proportional integral, Each PI controller parameter has a different impact on the overall characteristics of the wind farm. Static Synchronous Compensator (STATCOM), as a reactive power compensation device, can effectively improve the voltage fluctuation problem of the wind farm grid. At present, most wind farms are equipped with STATCOM, a...

Claims

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Application Information

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IPC IPC(8): G05B11/42
Inventor 华光辉许晓慧赫卫国梁硕秦昊杨宇琼夏俊荣张垠魏薇史林军
Owner CHINA ELECTRIC POWER RES INST
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