Study On Distribution Network Planning Of Linhe City Bayannaoer

Urban distribution network is an important part of power system, and plays a vital role in the development of urban economy and the improvement of people's living standard. With the rapid development of the Linhe City Bayannaoer and the increasing of power demand, the distribution network shoulders more arduous task. Reasonable distribution network can not only improve the power supply reliability, and can save a lot of investment costs. Therefore, the grid plan of Linhe City Bayannaoer is important. First, this paper analyzes the present situation of the grid of Linhe City Bayannaoer, main problems of the overlooking the city in load management, substation construction, transmission lines corridor, breaker and reactive compensation and other various aspects are pointed out.Secondly, the power load of Linhe city Bayannaoer is forecasted. Power load forecasting is the the foundation of planning and construction of the distribution network. According to the detailed regulatory provided by city planning department of Linhe city Bayannaoer, the "improved residential load density method" is adopted to forecast the power load. The forecasting of total power load forecast and load distribution is achieved, and the results are checked by various indicators.Thirdly, according to the results of the load forecast, locating and sizing of transformer substations planning is done. According to the load balance, "load center of gravity moment method" is used to choose the location and capacity of the substation in Linhe city network. The location, capacity, load ratio, load capacitance change rate, determined for Electric range, and the electrical calibration of Wanfeng substation are initially set.Lastly, the structure of distribution network of Linhe city Bayannaoer is studied. According to the planning results of substations in Linhe city Bayannaoer, goals and technical principles of construction and regulating plan of 10kV power distribution network is proposed. The overall arrangements of construction and transformation project of Linhe city Bayannaoer Urban distribution network are made, and the building program of 110kV substation to determine the southern suburbs, the center 110kV substation, west of 110kV substation and Wanfeng 110kV grid substation is made.