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2021 IEEE International Conference on Information Technologies

Power Substations Reliability Evaluation Using Fuzzy Set Theory

Atanas Iliev
Natasha Dimishkovska
Ss. Cyril and Methodius University in Skopje
North Macedonia

Power substations as infrastructures with highest outage rate closest to the consumers and power generation facilities, should be well analysed. This paper presents an upgrade of a method for evaluation of the reliability of power substations, considering uncertainty and imprecision of the input data, based on fuzzy logic. The probability of failure is modelled as a triangular fuzzy number and the Energy Not Supplied (ENS) is calculated. The method is presented on a 400/110 kV/kV substation. The case study shows that the usage of triangular fuzzy numbers gives satisfactory results from an engineering point of view and provides a high level of precision and model simplicity.

Key words:
power substations
fuzzy logic