电网技术Issue(7)：2053-2059,7.
中压真空断路器状态的雷达图法评估模型
Condition-Based Assessment Model of MV Vacuum Circuit Breaker With Radar Chart Method
摘要
Abstract
The overall online healthy assessment is the best strategy for the balance between the economy and the reliability of power equipment, this paper focuses on the online healthy condition-based assessment model of the medium voltage (MV) vacuum circuit breakers (VCB). Various performance indices are firstly proposed to assess the VCB’s condition by analyzing the fault characteristics of its main components. Then, the perfection degree is defined to make the sampling data normalized. Based on indices coupling relationships, the weights are determined with analytic hierarchy process (AHP). The entropy is employed to quantify the nonequilibrium impairment of all indices. Finally, an improved radar chart method with eigenvalue calculating algorithm is applied to the VCB’s condition assessment. In the method, the reference samples considering the impairment speed in thresholds design, especially the nonequilibrium entropy are incorporated to ensure VCB’s safety early warning adequately and timely. The test results on monitoring 10 kV VCB show that the model is concise, intuitive and feasible.关键词
真空断路器/状态评估/雷达图法/完好度/层次分析法/熵值Key words
vacuum circuit breaker/condition-based assessment/radar chart method/perfection degree/analytic hierarchy process/entropy分类
信息技术与安全科学引用本文复制引用
李海英,冯冬,宋建成..中压真空断路器状态的雷达图法评估模型[J].电网技术,2013,(7):2053-2059,7.基金项目
国家自然科学基金项目(51207092)；上海市教育委员会科研创新项目(12YZ099)。@@@@Project Supported by National Natural Science Foundation of China (51207092) （51207092）
Innovation Program of Shanghai Municipal Education Commission (12YZ099) （12YZ099）
