The Evaluation of the Medium-voltage Distribution Network Supplying Scheme in Consider of the Distributed Generation

With the rapid development of the economic, the urban distribution network as an important component of the power system, is paid more and more attention. And the investment in distribution grid also gradually increased. Medium voltage distribution network as a major part of the city power grid connects the high-voltage distribution network and the low as a bridge. Its status is very important. Along with the South ice disaster, the Wenchuan earthquakes and the other natural disasters, large power grid gradually exposing a variety of defects. Seeking new energy sources, addressing the major flaws is the medium voltage power grid distribution network needed to solve problems. The supplying program of medium voltage distribution network influences the quality of the power and the user’s consumption level. Excellent programs can not only improve the quality of the supply power, but also access to good social and economic benefits. This paper sumed up the characteristics of the various power feeding modes at home and abroad, as well as the features of the distributed power generation and the feeding mode includes the distributed power. And established the evaluation system of urban medium voltage distribution network program. Also introduced the calculation of individual indicators. And use the AHP to calculate the proportion of everal indicators in evaluation system. At the last, evaluate the program by an example of the power supply. And arrived on the better power supply program.