Comprehensive assessment method for vulnerability of high-voltage transmission lines in freezing disaster

A high-voltage transmission line, comprehensive evaluation technology, applied in the direction of instruments, data processing applications, calculations, etc., can solve problems such as different actual conditions, and achieve the effect of improving accuracy and fault tolerance

Inactive Publication Date: 2016-02-24
YUNNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In addition, the vulnerability results obtained based on the above theories are often obtained based o

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  • Comprehensive assessment method for vulnerability of high-voltage transmission lines in freezing disaster
  • Comprehensive assessment method for vulnerability of high-voltage transmission lines in freezing disaster
  • Comprehensive assessment method for vulnerability of high-voltage transmission lines in freezing disaster

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Embodiment Construction

[0035] The comprehensive assessment method for the vulnerability of high-voltage transmission lines under freezing disasters in this embodiment is the same as that described in the Summary of the Invention.

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] The comprehensive evaluation method for the vulnerability of high-voltage transmission lines under the freezing disaster of the present invention, the specific process is as follows:

[0038] According to the complex network theory, determine the topology of the power system. Specifically, read in generator nodes, start and end nodes of lines, transformer nodes, load nodes, and line information, convert transformer branches into lines, and merge multiple circuits; determine the edges of the topology model, and form the correlation matrix of the topology graph; for each Generator, search for the corresponding node, determine the power supply node ...

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Abstract

The invention discloses a comprehensive assessment method for vulnerability of high-voltage transmission lines in a freezing disaster, and belongs to the technical field of power grid safety analysis. The assessment method comprises: for a small world network based high-voltage transmission line vulnerability analysis result, a Monte-Carlo weather sampling based high-voltage transmission line freezing disaster vulnerability analysis result, and an expert scoring based high-voltage transmission line freezing disaster vulnerability analysis result, conducting united-decision by using a DS evidence fusion theory, and taking a final fusion result as a comprehensive index for assessing the vulnerability of the high-voltage transmission lines in the freezing disaster; and then, according to the value of the index, removing lines with relatively high vulnerability, and calculating a lost load percentage of a power system, thereby finally determining the vulnerability of the high-voltage transmission lines in the freezing disaster. The assessment method has the advantages that the method is a fused decision of a plurality of theories or methods, the accuracy of assessment of a power grid system on the vulnerability of the high-voltage transmission lines in the freezing disaster is improved, and an effective basis is provided for high-voltage transmission line inspection.

Description

Technical field: [0001] The invention belongs to the technical field of power grid safety analysis, and relates to a comprehensive evaluation method for the vulnerability of high-voltage transmission lines under freezing disasters, in particular to a comprehensive evaluation method based on the structural vulnerability of the power grid system and the vulnerability of high-voltage transmission lines under freezing disasters. Background technique: [0002] The electric power system is the most complex man-made system. The extensive use of electric energy has improved human life to an unprecedented level and created the second technological revolution in modern history. However, large-scale power system blackouts and even system collapses occur frequently, causing unnecessary losses to human production and life. Throughout the many large-scale power outages in recent years, almost all of them have evolved from initial local faults to avalanche cascading faults. The fault proce...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 李鹏张松海苗爱敏曹敏蒋建波董吉开沈鑫张林山
Owner YUNNAN UNIV
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