Research On Comprehensive Treatment Of 10kV Feeder Voltage Over-voltage Distribution In Medium Voltage Distribution Network

With China’s rapid economic development,electrical load is constantly increasing and power grid continuously stretches and expends.Fast and high-quality growth of economy also puts forward higher requirements for electricity supply.The voltage limit problem of medium voltage distribution network is generally concerned by users.According to the relevant standards,the government began to evaluate the power supply enterprise.Power supply enterprises also put a lot of money into the control of the voltage limit.With the rapid economic development,the local power supply load of Xishuangbanna in recent years has maintained a rapid growth of two digits.Therefore,the local user demand for power quality is increasing year by year.Low voltage distribution network in Xishuangbanna area in power supply area is large and the typical load is light,the loss of high status.With the increase of power load,the problem of voltage quality becomes more and more seriousIn this paper,the phenomenon of the typical voltage over limit of 10K feed line in Xishuangbanna distribution network is studied.The reasons are divided into three categories:the operation and control mode of the power grid,grid structure,load characteristics.Optimization of transformer model in power flow calculation of distribution network based on measurement data.Make the calculation results to coincide with the actual data.Finally,the integrated control strategy of the voltage distribution of the lOkV distribution line is proposed,which is based on the combination of the internal voltage regulation optimization and the voltage control.Through the research on the comprehensive control of the typical voltage in the middle voltage distribution network in Xishuangbanna area,we have an accurate understanding of the causes and treatment methods of the typical voltage limiting phenomenon of the 10kV feed line.We need to continue to study,continue to strengthen the construction of power grids,and constantly optimize the power grid resources,in order to achieve the conditions of continuous development of safe,stable,economic and reliable power supply targets.