Technology And Application Research On Fault Automatic Isolation Of Distribution Network

As an important part of power system,the reliability of distribution network directly affects people's living standard and the development of national economy.It is necessary to realize the automation of distribution network.Automatic fault isolation technology can not only improve the quality and reliability of power supply,but also reduce the number of failures and accidents,shorten the time of accident,provide an effective basis to rapidly analysis of the cause of the accident and rapidly restore the power.In addition,the economic benefits of the whole power system can be improved,the labor intensity of maintenance personnel can be reduced,the time of the equipment operation can be reduced,the safety and health of the equipment level can be enhanced,the management level of the entire power grid can be improved.Therefore,the distribution network fault automatic isolation technology is an important content of distribution automation.This paper according to the actual situation of Zhuhai power grid studies and discusses the distribution automation system and how to realize automatic fault isolation.The main work of this paper is as follows:First,this paper summarizes the research status of intelligent fault location and automatic isolation technology.It makes a detailed investigation on the general situation of Zhuhai distribution network,including the classification of power supply area,the distribution network structure level of each district,the scale of the construction of distribution network automation and the realization of the functions.This paper also points out the necessity and importance of the research on automatic fault isolation technology in distribution network.Second,this paper introduces the method of fault location and isolation of distribution network,and study the fault location scheme.It introduces the types of common line faults in distribution network,the principle and process of fault treatment.At last,the fault process of distribution automation switch is analyzed based on fault cases.Third,it discusses the hardware configuration and technical requirements for realizing the automation of Zhuhai distribution network,automatic fault location and automatic isolation.