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RPTSVM-based power system transient stability assessment method

A technique for transient stability assessment and power system, applied to electrical components, circuit devices, AC network circuits, etc.

Active Publication Date: 2017-09-15
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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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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  • RPTSVM-based power system transient stability assessment method
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Embodiment Construction

[0059] An 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.

[0060] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following 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.

[0061] see figure 1 , an embodiment of an RPTSVM-based power s...

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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, 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 access of renewable energy and a large number of power electronic equipment, the scale of regional power grid interconnection continues to expand, so that the dispatching operation mode and safety and stability control of the power system are facing severe challenges. The traditional "manual + equipment + experience judgment" production mode has been unable to Meet the scheduling needs of the current complex power grid. It is necessary to study the TSA online analysis method that satisfies the current operating state and is conducive to complex power grid dispatching. Fault screening based on system response data is the key to determi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 张俊峰陈厚合孙闻付聪赵艳军王钤唐景星
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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