孙辉,张国庆.采用组合赋权法的智能变电站继电保护设备状态模糊综合评估[J].电测与仪表,2020,57(7):23-28. 孙辉,zhangguoqing.Fuzzy Comprehensive Evaluation of Relay Protection Equipment Status in Intelligent Substations Based on Combination Weighting Method[J].Electrical Measurement & Instrumentation,2020,57(7):23-28.
采用组合赋权法的智能变电站继电保护设备状态模糊综合评估
Fuzzy Comprehensive Evaluation of Relay Protection Equipment Status in Intelligent Substations Based on Combination Weighting Method
The state evaluation of relay protection equipment in intelligent substation plays an important role in improving equipment operation and maintenance efficiency and asset utilization management level. A method for evaluating the status of relay protection equipment in intelligent substation based on combined weighting method and fuzzy theory is proposed. The state evaluation index system including the historical state information and real-time state information of the relay protection equipment is comprehensively established, combining the improved analytic hierarchy process (AHP) with the anti-entropy weight method and the variation coefficient method, the subjective and objective weight method is used to determine the combined weight of each index, which effectively overcomes the limitation of the single weighting method. Fuzzy comprehensive evaluation method is used to evaluate the equipment status, and the ridge-shaped fuzzy membership function is selected to calculate the index membership. The effectiveness and accuracy of the proposed method are verified by a practical example.
