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2020 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
Abstract:

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:
Reliability
power substations
fuzzy logic
uncertainty