Study On Line Loss Analysis And Loss Reduction Scheme Of Distribution Network In Wen’an County Of Langfang City

With the development of society,the demand for electric power is increasing day by day,the construction scale of distribution network is also expanding day by day.The structure of distribution network is becoming more and more complicated,and the power consumption of distribution network is getting bigger and bigger,which makes the meaning of reducing power consumption more important.In the whole distribution network generated line loss,10 kV distribution network line loss accounted for the largest proportion,so the study of distribution line loss calculation method and given the reduction measures have very important significance.Firstly,the basic theory of line loss is expounded,the basic concept of line loss,the cause of line loss and the theoretical calculation method of line loss are given.The rms current method and the equivalent resistance method are analyzed,equivalent resistance model and distribution transformer equivalent resistance model,gives the line loss calculation model.Secondly,taking Wen’an County in Langfang as an example,this paper introduces the general situation of Wen’an County Power Grid,calculates the equivalent impedance and line loss of Wen’an County 10 kV line by equivalent resistance method,and calculates the line loss of the whole line and the line loss of the different voltage level power grid of the typical representative day of Wen’an County distribution network by using line distribution loss calculation software and analyze the calculation result.And analyze and compare the theoretical line loss rate of different voltage grades.It can be seen that the greater the power supply,the greater the theoretical line loss rate.With the increase in power supply,the whole line loss rate increases the fastest,35 kV and 10 kV line loss rate increases relatively slow,380 V line loss rate change is very small.Finally,the commonly used technology reduction method and the management loss reduction method are introduced.According to the calculation and analysis of the line loss of Wen’an County,the existing problems of the line loss of the distribution network of Wen’an County are determined,including the existence of the technical line loss and the existence of the management line loss.In order to solve these problems,the corresponding technology reduction and damage reduction methods and management reduction methods are given,effectively reduce the line loss of distribution network in Wen’an County,which provides the basis for the upgrading and upgrading of the distribution network.