Method for determining parameters of excitation system property evaluation model

Abstract

The invention relates to a method for determining parameters of excitation system property evaluation model. The excitation system property evaluation model is a tree structural model. The top level of the tree structural model is a to-be-evaluated excitation system property, the bottom level is a plurality of basic evaluation factors, and the middle level is a classification evaluation factor. Parameters herein include a grade evaluation threshold value of a basic evaluation factor and the weights of the basic evaluation factor and the classification evaluation factor. The method for determining parameters includes the following steps: 1. acquiring a sample data which includes basic evaluation data of the basic evaluation factor which corresponds to a plurality of different excitation systems; 2. acquiring the corresponding grade evaluation threshold of each basic evaluation factor by using the probability curve knitting separation method; and 3. separately acquiring the corresponding weight of the basic evaluation factor and the classification evaluation factor by using 1-9 scale method. Compared with prior art, according to the invention, the method is simple and scientific, and can indirectly increase the reliability of an evaluation model.

Description

technical field [0001] The invention relates to a parameter determination method, in particular to a parameter determination method of an excitation system performance evaluation model. Background technique [0002] The increasing scale of the power grid and the massive grid-connection of fluctuating energy sources such as wind power have brought more disturbances to the power system. The problem of safe and stable operation of the power grid has become increasingly prominent. More attention has been paid to the regulation of the excitation system. The importance of comprehensive and accurate performance evaluation and its application to guide field work and power system scheduling has attracted more and more attention. The synchronous generator excitation system points to the synchronous generator to provide excitation power and its ancillary equipment. The excitation regulator controls the output of the excitation power unit according to the input signal and adjustment cr...

AI Technical Summary

Problems solved by technology

The traditional method of obtaining performance indicators of the excitation system has limitations that are too extensive, and the accuracy of the evaluation results is low, which affects the accuracy of the simulation calculation of the excitation system

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