Research On Theoretical Calculation And Loss Reduction Measures Of Yushe County Distribution Network

Energy conservation and environmental protection are increasingly valued by the whole society,and reducing the loss of power and energy is an important part of it.Under the general environment of power system reform,re-verification of transmission and distribution prices,and steady increase of the "power acquisition" index of the real economy,the profit margin of power supply enterprises has gradually been reduced,which also puts higher demands on the power supply enterprises to reduce energy consumption.under this background,this paper studies the loss reduction and energy saving of the distribution network of Yushe Power Supply Company.This paper firstly introduces the classification of line loss and line loss rate,and introduces the composition of line loss.Then,the calculation method of theoretical line loss is discussed in detail.Among them,the RMS current method is more accurate than other methods,and the data is easy to obtain,so this paper adopts the rms current method in the theoretical calculation of the distribution network.After determining the basic algorithm of theoretical calculation,the establishment of the equivalent models of power components such as distribution lines,transformers and capacitors is studied,which provides a theoretical basis for the theoretical calculation of distribution network.Secondly,it briefly introduces the process of theoretical calculation of distribution network of Yushe Power Supply Company,and completes the preliminary work such as the selection of representative day,the determination of theoretical calculation range,the preparation of data collection,the drawing of graphics etc.Then the theoretical calculation of 22 distribution lines and 8 low-voltage stations is carried out,theoretical calculation results are compared with the actual data,which verifies the accuracy of the calculation and provides a theoretical basis for the actual work of loss reduction.Then,the measures of reducing the loss of distribution network are discussed from the aspects of technology and management.the measures of reducing the loss of distribution network are discussed from the aspects of technology and management.The management of loss reduction should be carried out from two aspects:the treatment of three-phase unbalance and the detection of violations and thefts.Finally,the line loss management index and the current situation of the company's line loss management are explained and analyzed.Guided by the theoretical calculation results and the research results of the loss reduction measures,the effects of loss reduction measures adopted,including optimization of power grnd structure,line transformation,replacement of high-loss distribution transformers,three-phase unbalance control,inspection of illegal removal and so on,are illustrated,and the correctness of the study is verified.