Reliability evaluation of typical structures of medium voltage distribution network based on CYME

This paper models the typical structures of urban medium voltage distribution network baesd on the power system analysis software CYME，carry out the reliability indexes of each structure under different power supply radius. Then the influencing factors of overhead lines reliability are analyzed in detial, including the power supply radius, the contact switches and line segments, not only illustrates the impact trends, but also quantifies the degree of impacts . Finally, this paper has obtained the recommended typical strutures of urban medium voltage distribution network, which has certain guiding significance for urban medium voltage distribution network planning.