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Integrated risk assessment method for calculating operation uncertainty of electric transmission line

A technology for transmission line and operation risk, applied in the field of comprehensive risk assessment taking into account the uncertainty of transmission line operation

Active Publication Date: 2014-07-09
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Faced with the increasing complexity and uncertainty of the power transmission system, traditional system stability analysis and safety assessment methods have shown shortcomings

Method used

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  • Integrated risk assessment method for calculating operation uncertainty of electric transmission line
  • Integrated risk assessment method for calculating operation uncertainty of electric transmission line
  • Integrated risk assessment method for calculating operation uncertainty of electric transmission line

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Embodiment

[0098] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0099] This embodiment is a comprehensive risk assessment method that takes into account the operation uncertainty of transmission lines, see figure 1 It shows a schematic block diagram of its evaluation process, which specifically includes the following four parts:

[0100] S1: Determination of risk assessment indicators;

[0101] S2: fusion of expert experience weights;

[0102] S3: Calculate the reliability distribution with undetermined rational numbers to determine the risk weight;

[0103] S4: Comprehensive risk assessment.

[0104] A multi-combination optimized overhead transmission line operation risk informatization evaluation method in this embodiment specifically includes the following steps:

[0105] 1. Determination of risk assessment indicators

[0106]Identify the factors that may lead to the occurrence of...

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Abstract

The invention discloses an integrated risk assessment method for calculating the operation uncertainty of an electric transmission line. The integrated risk assessment method includes the following steps: (1) identifying and collecting characteristic factors for causing operation risks of the electric transmission line, determining risk characteristic indexes, and building an operation risk assessment index set of the electric transmission line, (2) fusing expert advice weights with a fusion theory, (3) using uncertain rational numbers to calculate reliability distribution to determine risk weights, and combining the risk weights and the fused expert advice weights in the step (2) to calculate integrated risk weights of the risk assessment index set, and (4) calculating a final integrated risk value in cooperation with section judgment matrixes, processing results, and judging risk levels. By means of the integrated risk assessment method, a subjective and objective analytical method is used in a combined mode, powerful supports are provided for finding potential operation risks as soon as possible, reducing the possible risks of line operation and reducing risk operation losses, and the integrated risk assessment method is the premise and the guarantee of scientifically and reasonably managing the risks and making decisions.

Description

technical field [0001] The invention relates to the technical field of transmission line operation risk assessment in the field of electric power, in particular to a comprehensive risk assessment method that takes into account the operation uncertainty of transmission lines. Background technique [0002] Transmission line is the main transmission mode of electric power construction. With the increasing scale of power grid construction, the safety and stability of transmission line operation has gradually become the focus of people's attention and has become a hot research topic at home and abroad. Today, in the field of power system research, there is no established evaluation model and evaluation standard for the study of transmission line reliability, but it has been gradually studied in depth and widely demanded. The evaluation of transmission line operation risk describes another aspect of its reliability research. On the other hand, higher risk means lower reliability, ...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 邓军吕家圣张晗常安林冰垠
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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