Application of FTA and Improved FAHP in Power Transformer Risk Assessment

Abstract:

For fast and accurately assessing the risk of the transformer failure and getting the reliability of transformer components, it is proposed a new method based on Fault Tree Analysis (FTA) and Improved Fuzzy Analytic Hierarchy Process (IFAHP) in this paper. Firstly power transformer fault tree is established accordingly to make the complex transformer faults system subdivide into various kinds of basic types directly; Secondly, the IFAHP is designed to analyze the fault tree, so the complex system of transformer can be quantitatively described and the fuzzy judgment matrix can be established; Finally, the fuzzy consistent qualification is changed into a mathematical programming problem and Genetic Algorithms (GA) is adopted to get the solution so as to obtain the reliability of transformer components. In addition, the application result shows the effectiveness of the method above.

• Periodical: Advanced Materials Research (Volumes 860-863)
• Pages: 2157-2160
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.860-863.2157
• Online since: December 2013
• Authors: Yi Yun Sun, Xin Wang*, Yi Hui Zheng, Li Xue Li, Qing Shan Xu
• Keywords: Fault Tree Analysis (FTA), Genetic Algorithm (GA), Improved Fuzzy Analytic Hierarchy Process, Risk Assessment

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