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A Comprehensive Risk Assessment Method Considering Operational Uncertainty of Transmission Lines

A transmission line, risk assessment technology, applied in computing, electrical digital data processing, special data processing applications, etc.

Active Publication Date: 2016-04-20
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A Comprehensive Risk Assessment Method Considering Operational Uncertainty of Transmission Lines
  • A Comprehensive Risk Assessment Method Considering Operational Uncertainty of Transmission Lines
  • A Comprehensive Risk Assessment Method Considering Operational Uncertainty of Transmission Lines

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Embodiment

[0098] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0099] This embodiment is a comprehensive risk assessment method that takes into account the uncertainty of transmission line operation, see figure 1 It shows a schematic block diagram of its evaluation process, which specifically includes the following 4 parts:

[0100] S1: Determination of risk assessment indicators;

[0101] S2: Fusion of expert experience weights;

[0102] S3: Undetermined rational number calculation reliability distribution to determine the risk weight;

[0103] S4: Comprehensive risk assessment.

[0104] In this embodiment, a multi-combination optimized overhead transmission line operation risk information evaluation method specifically includes the following steps:

[0105] 1. Determination of risk assessment indicators

[0106] Identify the factors that may cause transmission line operation risk events, namely ...

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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 electric power field, and in particular to a comprehensive risk assessment method that takes into account the uncertainty of transmission line operation. Background technique [0002] As the main transmission method for power construction, transmission lines have gradually increased with the increasing scale of power grid construction, and the safety and stability of transmission line operations have gradually become the focus of people’s attention and become a hot research topic at home and abroad. Nowadays, in the field of power system research, there is no definite evaluation model and evaluation standard for the research of transmission line reliability, but it has gradually been studied in depth and widely demanded. The evaluation of transmission line operation risk describes another aspect of its reliability research. On the one hand, higher risk means l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G06Q50/06
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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