Regional Grid Power Quality Evaluation Based on D-S Theory
According to preferences of different types of customers on power quality indexes in actual power grid, this paper proposes a power quality comprehensive evaluation method based on types of customers. This paper determines analytic hierarchy process (AHP) judgment matrix elements based on D-S evidence theory for every customer type, and then figures out the power quality indexes' weights of each type. It determines the weight of each type with considering the importance of each type in the regional power grid. Finally get the power quality weights of regional grid by merging power quality indexes' weights of all types. The evaluation result is more comprehensive with considering the types of customers in regional grid, and has improved the accuracy and scientificalness of the evaluation result.
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