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A power grid section adjustment method and system considering reducing the risk of cascading failures

A technology of cascading faults and sections, applied to information technology support systems, AC networks with the same frequency from different sources, electrical components, etc., to achieve the effect of reducing the risk of cascading faults and avoiding overload phenomena

Active Publication Date: 2022-05-20
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A power grid section adjustment method and system considering reducing the risk of cascading failures
  • A power grid section adjustment method and system considering reducing the risk of cascading failures
  • A power grid section adjustment method and system considering reducing the risk of cascading failures

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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 considering reducing the risk of cascading failures, including: performing power flow calculation according to the basic operation mode of the power grid, and determining the stability margin of each section; Determine the brittle branch set; calculate the affected branch according to the section to be adjusted, determine the neighborhood transfer branch set; determine the high-risk branch set; perform sensitivity calculations to obtain the section sensitivity matrix and the high-risk branch set sensitivity matrix; The sensitivity matrix and the high-risk branch set sensitivity matrix determine the coupling sensitivity matrix, adjust the section power according to the coupling sensitivity matrix, and determine the current operation mode of the power grid; respectively calculate the basic operation mode of the power grid and the current operation mode corresponding If the overall entropy corresponding to the current operation mode of the power grid is less than or equal to the overall entropy corresponding to the basic operation mode, it is determined that the grid section adjustment has been 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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Patent Type & Authority Patents(China)
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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