Risk Assessment on Fuzzy Fault Tree Analysis for Power Transmission Line Field Maintenance Work

Abstract:

This paper introduces a fault tree (FT) method based on fuzzy numbers, aiming to deal with the inadequate statistics and the uncertain probability of the basic events during the fault tree analysis for power transmission line field maintenance work. Based on expert judgment, the Delphi method is used to transform fuzzy language to triangular fuzzy numbers, finally an approach for defuzzification is developed. A typical hazard in replacing the linear composite insulator of 500kV transmission line field maintenance work is presented for a case study. The method is conducive to a better risk pre-control and decision-making.

• Periodical: Advanced Materials Research (Volumes 1044-1045)
• Pages: 412-416
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1044-1045.412
• Online since: October 2014
• Authors: Zhi Hui Li*, Qin Xiang Gao, Jie Hui
• Keywords: Fault Tree, Risk Probability, Transmission Line Field Maintenance Work, Triangular Fuzzy Numbers

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