Investment Efficiency Analysis On Medium Voltage Distribution Grids Transformation Project Of Harbin

Receiving for a long time "thinking much of electricity and making light of power supply" the policy influence,the Harbin distribution network construction is late,moreover the operation-equipment is obsolete and the supply way is unreasonable.Reforming through the city distribution network,not only may obtain the remarkable economic efficiency,moreover can enhance the power supply reliability effectively and electrical energy quality.But the distribution network plan is a foundation of the city distribution network transforms,then only based on appropriate structure of distribution network,the targets to reduce the power loss,and improve the electricity quality and reliability of distribution system can be realized.This thesis discussed the planning methods of urban distribution system guided by the key problem in the practical project,with the emphasis on both practice and theory,the implementation of these methods would be useful for the planning of the distribution system.According to the Harbin city characteristic and the foundation data provides the situation,this article has determined the load forecast overall mentality.It obtains each kind of load forecast result for the middle year,based on the historical data extrapolation method;According to the classical load forecast result in the near future,the intervention carried on by the recent partial regional development plan,the paper will obtain the distribution forecast result of the future.In analyzes the present situation of the domestic and foreign distribution networks,on the foundation of each kind of distribution network plan model,according to the Harbin scene distribution network movement actual characteristic,by the criterion "Intercity network Plan Design Leads ",the thesis consummates the Harbin city distribution network plan regulation,and completed by this has conformed to the reform plan of Harbin distribution network.