A Power System Transient Stability Evaluation Method Based on rptsvm

Abstract

An embodiment of the invention provides an RPTSVM-based power system transient stability assessment method. By adopting an energy function index and a power system index to configure an original feature set, the number of dimensions of the feature set and redundant information can be reduced, and a new idea of sample set configuration is formed; a maximum correlation and minimum redundancy feature selection method is adopted to perform feature compression on the power system index and a projection energy function index, so as to find a power system feature sub set with high power grid transient change sensitivity, so that redundancy information can be further reduced, and number of dimensions of the feature can be reduced; after a regular term reconfigurable classifier is added to the optimization target function by the RPTSVM, power system transient stability assessment is performed, so that transient stability assessment stability can be ensured, the non-full-rank defects of a variance matrix in the transient stability assessment by the PTSVM can be avoided, and the generalization ability of the PTSVM assessment model is improved; and parameter optimization is performed by a genetic algorithm, and the population quantity is reasonably selected, so that the calculation time can be shortened under the premise of ensuring that the optimal parameter combination can be selected.

Description

Technical field [0001] The invention relates to the technical field of power system safety and stability assessment, and in particular to a power system transient stability assessment method based on RPTSVM. Background technique [0002] Transient stability assessment is an important part of power system security and stability assessment. With the integration of renewable energy and a large number of power electronic equipment, the scale of regional grid interconnection continues to expand, making the dispatching operation mode and safety and stability control of the power system face severe tests. The traditional "manual + equipment + experience judgment" production method is no longer possible. Meet the dispatching needs of the current complex power grid. It is necessary to study the TSA online analysis method that meets the current operating state and is beneficial to complex grid dispatching. Fault screening based on system response data is the key to determining the effect ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a power system transient stability evaluation method based on RPTSVM, which is used to improve the shortcomings of the existing transient stability evaluation methods in terms of accuracy, stability and time complexity

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