High-pressured switch-disconnector is to offer road of high tension line to be in fall without load circumstance undertake changing receiving and the electric equipment that waits for electric equipment and road of electrified high tension line to undertake electric segregation is used to the high-pressured generatrix that is overhauled, breaker. The high-pressured switch-disconnector carry linage capacity in power system is very much, bad of its quality actor, run the safety that defends stand or fall to will affect power system directly. In recent years, the accident that causes by switch-disconnector breakdown happens again and again, some caused large area power failure even. These accidents, because the quality problem of switch-disconnector itself is caused,some are, some are caused. Accordingly, assure the moving position with good switch-disconnector, undertake reasonable overhaul maintains administrative job, those who become switch-disconnector safety to move is important assure.
　　
　　
The moving circumstance of 1 switch-disconnector
　　
　　
Concerned data shows, up to by 2003, the 110kV that Jiangsu saves electrified wire netting to join movement and the switch-disconnector of class high pressure such as above have nearly 16000. The outdoors switch-disconnector that moves inside Xuzhou electrified wire netting at present is GW4 more model with GW5 model, the switch-disconnector that nearly two years installation joins movement still has partial GW16, GW17 model reach a few GW7. Change with company of Xuzhou power supply check work area administer the transformer substation of 29 110kV and above voltage grade is exemple, outdoors switch-disconnector gross is in the 35kV of these model and above 1300 or so, majority is total works of Nanjing report porcelain, Xi'an on the west limited company of switch of high pressure of finite liability company, Shenyang, Henan makes the same score switch of electric high pressure province of tall electric Inc. , Jiangsu if the product of works of porcelain of report of switchgear plant of Great Wall of water of limited company of electric equipment of Gao high pressure, day, n and Alstom company, among them the product of 889 time took 20 centuries 84 ％ .
　　
　　
2 common flaw and breakdown are analysed
　　
　　
The limitation that in the system the switch-disconnector in moving produces and trouble are more, involve the quality issue of many sided. The biggest to safe moving menace is porcelain vase ruptures breakdown, it is the overheat that touch a head, motion next card of card sluggish, orgnaization is acerbity add up to brake not to reach the designated position with cent, porcelain vase shows subsidiary channels in the human body through which vital energy to wait.
　　
　　
A. Porcelain vase ruptures breakdown. 2005, xuzhou electrified wire netting produced porcelain vase 2 times to rupture breakdown, it is to be in moving operation, it is to be in construction wiring process, rupture place all be in in the agglutination of porcelain vase and flange. Porcelain vase ruptures to be concerned with product quality already, also pledge with the whole of switch-disconnector quantity and operation method are concerned. Porcelain vase controls undeserved likelihood to cause porcelain in fire process rawish, compact sex not all and the problem with cement glue bad outfit, method of together with qualitative check is lax, cause the porcelain vase with individual inferior quality to be assembled after the product, put in constitute great menace to safety in move. The operation method when operating personnel to add up to switch-disconnector in cent is undeserved, cause porcelain vase damage easily also too suddenly forcibly. In addition, mixed 2005 still produced brake of 8 500kVSOPLT knife to support blemish of porcelain vase craze 2004.
Previous12 Next

Previous:Transducer uses medium problem and the way to deal with a situation
Next：Transformer runs medium unusual appearance and breakdown processing