Research On The Strategy Of Power Distribution Network Differential Loss Reduction Based On Grey Correlation Degree And Sensitivity

The energy conservation and loss reduction of the distribution network has always been a problem that power supply companies attach great importance to.It is of practical significance today to vigorously promote energy conservation and emission reduction in China.Reducing the loss of the distribution network can not only bring economic benefits to the enterprise,but also improve the management level of the power supply enterprise and bring huge management benefits.This article focuses on the energy conservation and loss reduction of the distribution network.First,the definition of line loss is introduced and the distribution line loss and length,distribution transformer loss and its distribution characteristics,the distribution network power supply size,and the overall analysis are emphasized.The influence of network reactive power compensation status and the number of high-loss distribution transformers on the line loss of the distribution network.Secondly,the common calculation methods of distribution network line loss are compared and analyzed.The main methods are root-mean-square current method,average current method,maximum load loss hour method,equivalent resistance method,and calculation methods based on the improved forward pushback method.Then,this paper proposes a distribution network loss reduction strategy based on gray correlation and sensitivity,which divides distribution network loss reduction into three main steps: The first step is to study the main factors affecting the regional distribution network line loss through gray correlation analysis;The second step is to analyze the influence of different factors on the line loss through sensitivity calculation.The third step is to propose a targeted loss reduction strategy based on the sensitivity results.In order to verify the effectiveness of the proposed loss reduction strategy for the distribution network,this paper selects a 10 k V distribution network of a newly-built substation in JMS Power Grid as the research object,and proposes a network reconstruction,distribution Loss reduction strategies such as transformer transformation,reactive power optimization compensation,and reasonable arrangement of operation methods have shown that this strategy has achieved good results.The analysis shows that the loss reduction strategy of the distribution network based on the gray correlation and sensitivity can be effectively applied to the loss reduction of the distribution network.The comprehensive analysis of the influencing factors and the targeted strategy are feasible.The implementation of the loss reduction strategy can effectively reduce the loss of the distribution network,which is of great significance for improving the economic efficiency and energy saving and emission reduction of power supply enterprises.