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Electric power system stabilizer parameter optimization method based on generalized phase compensation method

A phase compensation method and power system technology, applied in wind power generation, reducing/preventing power oscillation, single-network parallel feeding arrangement, etc., can solve the problem of high computational complexity of power system parameters

Pending Publication Date: 2020-04-03
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Problems solved by technology

[0005] Aiming at the deficiencies in the above-mentioned background technology, the present invention proposes a parameter optimization method for power system stabilizers based on the generalized phase compensation method, which solves the technical problem of high computational complexity of existing power system parameters

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  • Electric power system stabilizer parameter optimization method based on generalized phase compensation method
  • Electric power system stabilizer parameter optimization method based on generalized phase compensation method
  • Electric power system stabilizer parameter optimization method based on generalized phase compensation method

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Embodiment Construction

[0081] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0082] A parameter optimization method for a power system stabilizer based on a generalized phase compensation method, the specific steps are as follows:

[0083] S1. Construct the DFIG model of the doubly-fed wind turbine; the structure of a typical DFIG unit is as follows figure 1 shown. The stator winding of the generator is directly connected to the grid, while the rotor winding is connected to the grid through a back-to-back converter. Since the rotor m...

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Abstract

The invention provides an electric power system stabilizer parameter optimization method based on a generalized phase compensation method, and the method comprises the steps: firstly, constructing a DFIG model of a double-fed wind generating set; secondly, adding the DFIG model into a power system, adding a power system stabilizer into the power system according to low-frequency oscillation existing in the power system, and optimizing parameters of the power system stabilizer by using a generalized phase compensation method; and finally, through adoption of a characteristic root analysis method and a time domain simulation method, analyzing the influence of the power system stabilizer after parameter optimization on the damping characteristic of the power system. According to the method, the PSS is optimized through adoption of the generalized phase compensation method, so that the damping characteristic of the power system after wind power grid connection can be better improved, the oscillation amplitude of the power system is reduced, the oscillation time is shortened, and the stability of the power system is facilitated; and for different operation conditions, the optimized PSShas better robustness.

Description

technical field [0001] The invention relates to the technical field of power system parameter calculation, in particular to a parameter optimization method of a power system stabilizer based on a generalized phase compensation method. Background technique [0002] The intensive exploitation and extensive application of fossil energy have caused a sharp decline in environmental capacity and resource carrying capacity. Under the dual pressure of energy and environment, energy strategy has become one of the important strategies for sustainable development in our country. Wind energy has attracted the attention of scholars all over the world due to its abundant reserves and environmental protection. However, wind energy is intermittent and fluctuating, coupled with the reverse distribution of resources and loads, its large-scale grid connection will inevitably change the power and flow distribution of the original grid and the drive inertia of the system tie-line, and then chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/38
CPCH02J3/24Y02E10/76
Inventor 和萍季玉琦武小鹏赵琛李从善陶玉昆李钊方棋元郑明明
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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