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Power grid section adjustment method and system by considering reduction of cascading failure risks

A technique of cascading failures, cross-sections, applied in information technology support systems, AC networks with the same frequency from different sources, electrical components, etc.

Active Publication Date: 2020-10-23
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a grid section adjustment method and system that considers reducing the risk of cascading failures to solve the problem of how to adjust the grid section

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  • Power grid section adjustment method and system by considering reduction of cascading failure risks
  • Power grid section adjustment method and system by considering reduction of cascading failure risks
  • Power grid section adjustment method and system by considering reduction of cascading failure risks

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Embodiment Construction

[0135] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments in the drawings does not limit the invention. In the figures, the same units / elements are given the same reference numerals.

[0136] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or overly for...

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Abstract

The invention discloses a power grid section adjustment method and system by considering reduction of cascading failure risks, and the method comprises the steps: carrying out the load flow calculation according to a basic operation mode of a power grid, and determining the stability margin of each section; determining a to-be-adjusted section and a low-margin section; determining a brittle branchset; performing influence branch calculation according to the to-be-adjusted section, and determining a neighborhood transfer branch set; determining a high-risk branch set; performing sensitivity calculation to acquire a section sensitivity matrix and a high-risk branch set sensitivity matrix; determining a coupling sensitivity matrix according to the section sensitivity matrix and the high-riskbranch set sensitivity matrix, performing section power adjustment according to the coupling sensitivity matrix, and determining a current operation mode of the power grid; calculating overall entropies corresponding to the basic operation mode and the current operation mode of the power grid respectively; and if the overall entropy corresponding to the current operation mode of the power grid issmaller than or equal to the overall entropy corresponding to the basic operation mode, determining that power grid section adjustment is completed.

Description

technical field [0001] The invention relates to the technical field of safety analysis and simulation of a large power grid, and more specifically, relates to a method and system for adjusting a section of a power grid considering reducing the risk of cascading failures. Background technique [0002] The operation mode of the power system is the overall technical plan for the production and operation of the power system. The formulation, evaluation, adjustment, and optimization of the operation modes of various levels of power grids are one of the core tasks of power system operation managers. With the continuous improvement of the voltage level and the diversification of power transmission methods, more attention should be paid to the research of the operation mode, and the problems existing in the power grid can be found in time. [0003] For the operation mode arrangement, on the basis of a reasonable grid structure, it is often necessary to investigate the operating char...

Claims

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Application Information

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IPC IPC(8): H02J3/06H02J3/24H02J3/00
CPCH02J3/06H02J3/241H02J3/00125H02J2203/20H02J2203/10Y04S10/50
Inventor 杨学涛宋墩文马世英陈勇杜三恩刘开欣饶宇飞崔惟李铮许鹏飞郁舒雁刘道伟杨红英冯静谢家正赵高尚
Owner CHINA ELECTRIC POWER RES INST
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