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Power supply reliability evaluation method and system

A reliability and power point technology, applied in the field of power supply reliability evaluation, can solve the problems of unable to find weak links, long calculation time, no clear optimization direction, etc., to achieve the effect of strong operability and implementation

Active Publication Date: 2018-04-24
STATE GRID ZHEJIANG ELECTRIC POWER COMPANY ECONOMIC TECHN INST +4
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Problems solved by technology

[0003] For complex networks, the traditional reliability assessment algorithm has the problem of long calculation time
However, the existing reliability evaluation algorithms mainly focus on the optimization of the reliability calculation time, and the impact of the grid structure on the reliability index can be classified into three categories: link, connection, and mutual influence. The existing reliability evaluation algorithm cannot Quantitatively analyze the impact of reliability indicators from these three aspects, so the existing reliability evaluation algorithms cannot theoretically find out its weak links when performing network optimization, and there is no clear theoretical support for its optimization direction

Method used

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  • Power supply reliability evaluation method and system
  • Power supply reliability evaluation method and system
  • Power supply reliability evaluation method and system

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Experimental program
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Embodiment 1

[0058] This embodiment provides a method for evaluating power supply reliability, including matrix construction, model establishment, and index calculation; the matrix construction is used to generate the topological structure matrix of the distribution grid; the model establishment uses the The topological structure matrix establishes a reliability index calculation model; the index calculation unit uses the reliability index calculation model to calculate the reliability index, and quantifies the influence of connections, links and mutual influences on reliability.

[0059] Such as figure 1 As shown, the method for evaluating the reliability of power supply includes the following steps: parameter setting, component equivalent; determining the main trunk and branch lines to construct the outlet end of the bus; respectively numbering, constructing the branch line and main trunk network topology matrix; calculating each sub The power outage time of the branch line and the number o...

Embodiment 2

[0098] This embodiment provides an evaluation system for power supply reliability, including:

[0099] Matrix building unit: used to generate the topology structure matrix of the distribution network frame;

[0100] Model establishment unit: use the topology structure matrix to establish a reliability index calculation model;

[0101] Index calculation unit: use reliability index calculation model to calculate reliability index, and quantify the influence of connection, link and mutual influence on reliability.

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Abstract

The invention discloses a power supply reliability evaluation method and system. The influences of a power distribution network grid structure on reliability indexes are classified into three categories, namely, links, connections, and mutual influences. Existing reliability evaluation algorithms cannot perform quantitative analysis on the influences on the reliability indexes from the three aspects. The evaluation method of the present invention includes steps of matrix construction, model establishment and index calculation. The matrix construction aims to generate a topology matrix of a power distribution network grid structure; according to the model establishment, a calculation model of the reliability indexes is built through using the topology matrix; and according to an index calculation unit, the calculation model of the reliability indexes is adopted to calculate the reliability indexes, and the influences of the links, connections, and mutual influences on the reliability indexes are expressed in a quantified manner. With the method and system of the invention adopted, the quantitative indexes of power distribution network user reliability analysis and system reliabilityanalysis are realized, and the influences of the links, connections, and mutual influences on the reliability indexes are reflected.

Description

Technical field [0001] The invention relates to the field of power supply reliability evaluation, in particular to an evaluation method and system for calculating power supply reliability through a network topology structure construction matrix. Background technique [0002] There are two main types of existing quantitative calculation methods for reliability indicators: analytical methods and simulation methods. The analytical method is based on component reliability and implemented by enumerating system states. The simulation method is an experimental method that uses random sampling for statistical calculations, and the calculation accuracy depends on the number of samplings. [0003] For complex networks, traditional reliability evaluation algorithms have the problem of long calculation time. The existing reliability evaluation algorithms mainly focus on the optimization of the reliability calculation time, and the influence of the grid structure on the reliability index is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 胡列翔郑伟民孙可王蕾李宏仲胡哲晟潘弘高倩朱超翁秉宇周昱甬
Owner STATE GRID ZHEJIANG ELECTRIC POWER COMPANY ECONOMIC TECHN INST
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