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Research on Reliability Evaluation of the Substation Anti-misoperation Locking System

The correctness and safety of the substation switching operation is related to the safe and stable operation of the power grid. In recent years, the frequent occurrence of misoperation incidents in substations has revealed that there are still many problems in the reliability of the anti-misoperation locking system. Therefore, a comprehensive and objective evaluation is of great significance for grasping the reliability level of the anti-misoperation locking system. Considering that the reliability of the system is closely related to its components, on the basis of analyzing the factors affecting the reliability of each component, this paper established a comprehensive reliability evaluation index system, the entropy weighting method is used to calculate the weight of each index, and the TOPSIS method is used to achieve comprehensive evaluation and ranking. Finally, the effectiveness of the proposed method is verified by taking the anti-misoperation locking system of 9 substations in 3 regions as an example.