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A pss parameter tuning method based on dna fuzzy genetic algorithm

A technology of fuzzy genetic algorithm and parameter setting, which is applied in the direction of DNA computer, genetic rules, gene model, etc., to achieve the effect of rich population diversity, high calculation accuracy and improved calculation accuracy

Active Publication Date: 2020-04-07
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a PSS parameter tuning method based on the DNA fuzzy genetic algorithm, which effectively solves the shortcomings of the traditional PSS parameter tuning method and the defects of the existing genetic algorithm in solving the PSS parameter tuning problem

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  • A pss parameter tuning method based on dna fuzzy genetic algorithm
  • A pss parameter tuning method based on dna fuzzy genetic algorithm
  • A pss parameter tuning method based on dna fuzzy genetic algorithm

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[0017] The technical solutions in the present invention are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0018] like figure 1 Shown, a kind of PSS parameter tuning method based on DNA fuzzy genetic algorithm provided by the present invention comprises the following steps:

[0019] (1) Taking the maximum damping ratio of the system and the optimal PSS compensation phase as the objective functions, and considering the control variable constraints and the angle constraint that the PSS output torque vector lags the Δω axis in the frequency range of 0.2 Hz to 2.0 Hz, a PSS parameter ...

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Abstract

The invention discloses a PSS parameter setting method based on a DNA fuzzy genetic algorithm, and relates to the technical field of PSS parameter setting of generator excitation systems. The method comprises the steps: taking the maximum system damping ratio and the optimal PSS compensation phase as the objective, carrying out the DNA coding of to-be-set PSS parameters, and carrying out the genetic operation of individuals of a population on the basis; combining the fuzzy control theory and the DNA fuzzy genetic algorithm, carrying out the online adjustment of the crossing-over rate, variation rate and inversion operation rate according to the progress condition of the algorithm, and effectively improving the convergence rate and calculation precision of the algorithm. During PSS parameter setting, compared with a common genetic algorithm, the DNA fuzzy genetic algorithm is high in calculation precision, is high in convergence rate, is abundant in population diversity, and is well adapted to the multi-constraint and nonlinear complex actual problem of PSS parameter setting.

Description

technical field [0001] The invention belongs to the technical field of PSS parameter setting of generator excitation system, in particular to a PSS parameter setting method based on DNA fuzzy genetic algorithm. Background technique [0002] PSS (Power System Stabilizer) is the most effective and economical means to suppress low-frequency oscillations, and whether PSS can effectively suppress low-frequency oscillations depends on how to reasonably configure or select PSS parameters. The general on-site setting method is to adopt the successive approximation method, that is, to continuously adjust the lead lag time constant of the PSS, so that the lag phase of the excitation system and the compensation phase of the PSS are within the range specified by the standard. This method relies too much on the field experience of the test personnel. , the efficiency is low and the actual effect of the adjusted PSS parameters on suppressing low-frequency oscillation is not necessarily op...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24G06N3/12
CPCG06N3/123G06N3/126H02J3/24H02J2203/20
Inventor 刘光时孙志媛窦骞梁水莹刘默斯王晓明丘浩张翌晖
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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