Innovation And Application Of Tools For Live Working In Distribution Network

The distribution network,as a network that receives electric energy from the transmission grid and directly distributes electric energy to users,plays a vital role in the entire power system.However,in the distribution network,there are many electrical equipment and insulation levels.Relatively low,most of the faults in the entire power system occur in the distribution network.Power outages and repairs seriously affect the power quality and power experience of power users,and often cause huge economic losses.In order to improve the reliability of power use and reduce Economic losses,online monitoring and condition maintenance,live working technology has been widely used and developed into important technical means such as equipment maintenance and line transformation.(1)Mainly analyze the development of live work technology at home and abroad,mainly from the technical specifications of live work,the development history of live work tools and the development trend of live work in the future,and point out that the future of live work only needs to be studied The direction mainly focuses on UHV live work,high altitude live work,helicopter live work and robot live work.(2)Analyze the principle of live working,analyze the principle of ground potential operation,the principle of intermediate potential operation and the principle of equipotential operation respectively,and analyze the potential influence of the operator under these three operation modes;Insulated rod operation method,insulated glove operation method,integrated non-stop operation method and robot live operation method of net live operation are analyzed,and the basic operation form of live operation is divided.(3)Classify insulating tools and appliances for live working,and study the application occasions and performance indexes of each type of insulating appliances,and study the classification and main performance indexes of insulating materials used to make insulating tools and appliances.At the same time,the main test standards and test methods of tools and appliances are studied.(4)Developed Puncture type high voltage fuse,special lightning arrester shields,wire insulation struts,isolation switch insulation baffles,and new non-stop insulation clearance tools.The developed tools and appliances were subjected to rain test,insulation test before and after damp,bending test,and radial compression test.All the tests were qualified.At the same time,the developed tools were used for practical application.The practical results showed that the developed tools and tools Improve work efficiency,reduce labor intensity of operators,improve power supply reliability,and reduce social and economic losses.