Dimension Reduction Method for Operational Reliability Evaluation in Power Distribution System

This paper focus on the operational reliability evaluation in power distribution system. Operational reliability evaluation means to forecast the future reliability for the current system. As the structure of distribution network being more and more complex while the requirement of safety and reliability being more and more strict, it is necessary to study new method and technology to evaluate the operational state of distribution network. This paper proposed a 4-dimention operational reliability index system of distribution network and a dimension reduction method. The 4-dimention operational reliability index system includes four main index sets and each main index set has several sub indexes. In order to simplify the evaluation process, this paper proposed a dimension reduction method based on principal component analysis method. Test results show that the proposed method can simplify the evaluation on the basis of keeping the main information.