Research On Analysis Of Reliability Improvement Measures Of Distribution Network

Distribution system is the key to ensuring the quality of power supply,as well as the vital part of reliability.The analysis of distribution network reliability improvement measures is one of the essential technologies to achieve efficient distribution network reliability improvement.In this paper,we focus on the measures of reliability improvement of distribution network,and do some research on the qualitative and quantitative analysis of the reliability improvement measures and the reliability assessment methods of distribution network.Some achievements are as follows:Based on the analysis of power supply blackouts and power supply reliability factors,this paper presents a method to analyze the reliability of power distribution network.And obtain a universal set of measures to enhance reliability of power supply.for the subsequent quantitative analysis.This paper proposes a quantitative evaluation method of reliability improvement measures on the basis of qualitative analysis.In the method,the relationship between measures and indexes is decomposed into four levels,including distribution network reliability improvement measures,reliability parameters,reliability correction variables and reliability indicators.Through the layer-by-layer analysis,the effect of different promotion measures on the reliability of the power grid can be obtained.The feasibility and effectiveness of the proposed model is verified by an example grid of in a certain area of our country.Aiming at the basic part of quantitative evaluation of reliability index,a reliability evaluation method based on load classification evaluation is proposed.In this method,the current state of the power grid is used as a basis to predict the future state of the power grid through the simulation sampling of the main components.The method uses the current grid status as a basis for predicting the future state of the grid through simulated sampling of major components.Aiming at the system after potential failure,the method solves the reliability index according to the classification of load nodes,and realizes the online reliability evaluation of distribution network.It takes into account the application of new technologies and provides some support for the analysis of the upgrade measures based on reliability.