An assessment method of SF6 high-voltage circuit breaker based on association rules and variable weight coefficients
DOI：10.7667/PSPC162086
Key Words:high-voltage circuit breaker  conditional assessment  association rule  variable weight
Author NameAffiliation
HUANG Xuyong Electric Power Research Institute, Yunnan Power Grid Company Limited, Kunming 650217, China 
SUN Peng Electric Power Research Institute, Yunnan Power Grid Company Limited, Kunming 650217, China 
GENG Sujie School of Economics and Management, Nanjing University of Science and Technology, Nanjing 210094, China 
WANG Xiuli School of Economics and Management, Nanjing University of Science and Technology, Nanjing 210094, China 
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Abstract:Considering that the existing assessment methods depend on expert’s experience and knowledge excessively, this paper presents an assessment method of SF6 high-voltage circuit breakers based on statistical regularity of samples of breakers. After identifying relations between the experimental and monitoring items and the deterioration properties of breakers, the assessment index system is constructed. The score functions of status items are proposed by analyzing their characteristics. Meanwhile, the weights of status items are calculated by using confidence coefficients of association rules to scale their relative importance quantitatively and objectively. The variable-weight formula is adopted and the equilibrium parameters are selected experimentally to calculate weight coefficients of comprehensive indices, thus to settle the imbalance of comprehensive state relative deterioration degree. The instances illustrate that the proposed method is able to evaluate the comprehensive state of SF6 high-voltage circuit breakers effectively, which provides a new method for safety control and condition maintenance of circuit breakers. This work is supported by National Natural Science Foundation of China (No.71571101).
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