Performance Evaluation of Distributio1n Network Based on Attribute Mathematics

With the development of social economy, it is urgent to realize self-healing control of distribution network to meet the increasing demand of power users to distribution network. And real-time and accurate control of the running state of distribution network is the premise of self-healing control of distribution network. Firstly, the evaluation indices of the operation state is established from 5 aspects: safety, reliability, quality, economy and adaptability; Then, the attribute interval model of operation state identification is constructed, which could transform the identification problem into calculation problem of operation state’s attribute measure; Finally, analytic hierarchy process is used to determine the weights of indices, identify the operation state of the distribution grid by comprehensively using rank feature value identification formula and the confidence criterion formula. Simulation results show that the model can accurately and objectively evaluate the running state of distribution network.