The Research Of Reliability And Economy Of Connection Modes In Distribution Power System

With the development of social economy, the requirement to distribution system in urban has been more and more vigorous, it is necessary to represent the index of distribution system reliability clearly. This paper bases on the deep research to connection mode of domestic and overseas distribution system, aim at the way of power supply of looping grid and open looping operation in country, the writer put forward a new reliability evaluation method that combines the stratification algorithm with equivalence of the network and failure mode ending analysis method, which can give some advice to the modification of distribution system in urban. It is useful to the practical complicated power grid with equivalence of the network method. The influence to the reliability of the power system has been considered fully with the fault mode ending analysis method.