Research On High Voltage Distribution Network Planning Of QuYang County

Distribution Network Planning is an important preliminary work of power system development, which has an important meaning for local development of society and economy. With the increasing of social power demand, the correct and reasonable planning and transformation for distribution network become more and more profitable, which can solve the contradiction between power supply and demand effectively, and improve the reliability and safety of power supply, and promote the healthy development of the national economy.This thesis presents the status of Quyang distribution network. The power supply, load, power grid structure and power transmission equipment and other conditions in the area were investigated and summarized, and the existing problems are analyzed. Having considered the main problems of the distribution network in Quyang County, "Thirteen Five Plan" of Quyang distribution network are finished. First, based on the analysis of the socio-economic development and electricity load characteristics, the power load in Quyang county is forecasted by several different methods. Second, the objectives and technical principles of Quyang distribution network planning is got, and the substation capacity of distribution network is determined depending on the net load conditions and load ratio of different voltage levels, and the substation location is set by load distribution conditions. Finally, planning of Quyang power network in different voltage levels are finished, and the investment budget for planning programs is proposed. The reserch in this paper will be useful for determining "Thirteen Five Plan" of Quyang distribution network, which may have certain significance in promoting Quyang County Economy.