Research On The Economic Evaluation Of The Distribution System Operation

With the development of power systems, the economic operation of power grids make more attention by the relevant researchers, and economic performance evaluation of distribution network is one of the important content. It is important to find the reason influencing the economic operation, reflect the operation situation and provide the valuable suggestions for the distribution network economical operation.This article researches the economic operation of the distribution system, founds the relevant evaluation model, and the numerical examples show the effectiveness of the proposed model.First, analyze the actual operation of distribution network. The influence factors of power network economic operation are found out, through the actual situation of power network economic operation, and propose ways to improve its related measures. The evaluation index system of economic operation is established according to the classification, hierarchical principle.Second, propose a method of index weight combing hierarchical analysis and principal component analysis method. It avoided the subjectivity problems in determining weight. And improve the problem for the difficulty of adjust AHP, It solved consistency problem and the establishment of judgment matrix through amendments to the fuzzy comparison matrix. It simplified the calculation process of AHP, and improved calculation speed.Then, established the fuzzy comprehensive evaluation model to economic operation of distribution network, and combining the expert opinions and practical distribution network historical operation gives membership function and the specific form of the parameters for the model specific value.Finally, it got the membership of the index, the index weight and index scores based on based on the actual operation of the distribution. It evaluated the systematic, scientific of distribution network operation. Reduction and energy saving are formulated, it improve running economy, and will be a part of the measures to practical distribution operation economic evaluation.