Performance evaluation method of synchronous generator exciting system

Abstract

The invention relates to a performing evaluation method of a synchronous generator exciting system. The method comprises the following steps: (1) building a tree-like evaluation model of the synchronous generator exciting system, wherein the top layer of the model is the synchronous generator exciting system performance to be evaluated; the bottom layer includes a plurality of basic evaluation factors; the middle is provided with at least one layer, and each layer includes a plurality of classified evaluation factors; (2) determining the weights of all basic evaluation factors and the classified evaluation factors; (3) obtaining the basic evaluation results of all basic evaluation factors at the bottom layer; and (4) calculating from the bottom layer of the tree-like evaluation model by layers according to the basic evaluation result and the weight of each evaluation factor so as to obtain the overall evaluation result of the synchronous generator exciting system performance to be evaluated on the top layer. Compared with the prior art, the method has the advantages that the performances of the exciting system can be accurately, stably and conveniently evaluated, so that complete, reliable and timely basis can be provided to the electric power system dispatching; and the method is of important theory and practice significance to the guiding of the site work and the parameter optimizing.

Description

technical field [0001] The invention relates to a generator performance evaluation method, in particular to a synchronous generator excitation system performance evaluation method. 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 criteri...

AI Technical Summary

Problems solved by technology

However, the traditional parameter optimization mode has certain limitations: due to the lack of a reasonable quantitative evaluation strategy, the effectiveness of parameter adjustment cannot be evaluated; and the dependence on senior technical experts is strong, and those with insufficient work experience Employees cannot complete the operation of parameter optimization independently

These problems are not obvious in the traditional power grid. With the gradual expansion of the grid scale and the large-scale grid connection of fluctuating renewable energy, it has brought certain fluctuations and impacts to the traditional power grid, and put forward higher requirements for power system dispatching. Requirements, only giving the equivalent dynamic performance of the excitation system is qualified can not fully meet the needs of safe operation

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