Fault Analysis And Fault Finding For Distribution Lines

The reliability of power supply and the quality of power supply are both the direct embodiment of the economic benefits of power enterprises and the inestimable social benefits of distribution networks.However,with the rapid increase of population,the pressure of the power supply system is becoming more and more big.When there is a fault,the existence of these faults seriously affects the safety of the power grid.To increase the security analysis of power supply system,especially the fault analysis and search of distribution network,is of great significance to further improve the security of power grid in our country.Then the distribution system is complicated because of its branch lines.At present,when the short circuit fault occurs,only the circuit breaker is tripped out,and the specific fault location still needs to be searched by the operators of the distribution grid.Even with the switch on the main line,only a limited number of segments can be isolated.It takes a lot of manpower,material resources and time to find out the specific fault location,and the efficiency is very low.This topic is based on this important practical research significance.Firstly,the research status of distribution network fault analysis and search is introduced.Then,the paper analyzes the distribution network management and operation and maintenance status of N city in detail,and expounds the problems of distribution network management and operation and maintenance in detail.Secondly,it briefly introduces the main line protection of distribution network and the action principle of protection,how to analyze and find out different protection actions is introduced in detail.A typical example shows that the analysis and search of the daily distribution line faults are both time-consuming and laborious,and there are still many security risks.In view of the problems of distribution line fault analysis and finding,this paper presents a relatively small size,light weight,simple operation,easy to carry,and quick way to find fault.The fast fault addressing device of the distribution line not only saves time and effort,but also ensures the personal safetyand the equipment safety of the operator.The use of fault location instrument in distribution network greatly reduces the application time of fault finding in distribution lines.The equipment is not only reduces the power failure time,but also reduces the labor intensity of the staff.It has very good economic and social benefits.Finally,the jobs of the full paper are summarized,and the directions of future research are put forward.