Distribution Network Reliability Assessment System

With power system becoming enormous and complex, the modeling and calculation of distribution network become more difficult. Thus how to put precision and calculating quantity on balance and how to find fast and effective algoritlim are the problems that need research farther. Considering this, by the research on reliability evaluation algorithm of distribution network, a network topology algorithm was approved in this paper. And a reliability evaluation system of distribution network was developed by the application of object-oriented programming.The system proposed a new approach to graph expression .The diagram of distribution network can be inputted by a exclusive graph tool .The system can divide the subsection in feeder, analyze the topology of inputted diagram, calculate the reliability index of feeder and synthesize it to finally get system reliability index. In addition, in the system a input interface is provided to input the statistical data of the factors that infect the reliability of distribution network. And the system can calculate the statistical index, create report forms, display and compare expected index and statistical index. In the end, method to improve reliability is proposed at the assist of the system.The running circumstances attest the system have strong expansibility, flexible maneuverability, friendly interface and strong ability of man-machine interaction. The system can provide effective reliability index for the run and layout of power system, can offer adequate grounds for the layout and decision-making and have practical value.