The Study On Power Supply Method Of The 20kV Distribution Network In City Medium Voltage

The urban power grid planning is one of the most important parts of the urban master planning,the quality of the grid planning will directly influence the index of power supply as security,reliability and economy.With the urbanization developing rapidly,the urban load increases quickly,to avoid unnecessary wasting of resources and economic losses,a scientific and reasonable planning of the urban power grid is necessary.The boost transformation of the urban medium voltage distribution grid is one of the most important decisions,which can fit the need of the urban modern development of our country and build the resource-efficient and environment-friendly type power grid.This thesis that the actuality of the urban power grid which considering the study status at home and abroad,contrasting the index of power grid of 10 kV and 20 kV as power supply capacity,power loss,voltage quality and so on.Then analyzing the technical feasibility and necessity of building the power distribution grid of 20 kV with keeping to the principle of the boost transformation of power grid;According to the principle of power grid voltage booster,the medium and long term load forecasting of Zhengzhou new district is carried out by using the combined forecasting method,and researching on applying the medium voltage distribution grid of 20 kV to the new district of zhengzhou city.Through analysis and research,the technical feasibility and economic superiority of 20 kV medium voltage power distribution system are verified.