一种对GIL外壳热胀冷缩位移变化的吸收与补偿方法  

A Thermal Deformation Absorbing or Compensating Method for GIL Enclosure Shell

作　　者：刘扬[1] 慎志勇[1] 邓川[1] LIU Yang;SHEN Zhiyong;DENG Chuan(Baihetan Hydropower Plant,China Yangtze Power Co.,Ltd.,Ningnan 615400,China)

机构地区：[1]中国长江电力股份有限公司白鹤滩水力发电厂,四川宁南615400

出　　处：《水电与新能源》2021年第6期7-9,共3页Hydropower and New Energy

摘　　要：针对悬挂式气体绝缘金属封闭输电线路(gas-insulated metal-enclosed transmission line,GIL)运行中热胀冷缩位移变化进行研究,提出采用铰链式波纹膨胀节对运行中的热胀冷缩位移变化进行吸收和补偿,确保设备的长期安全、可靠、稳定运行。但铰链式波纹膨胀节需要成对使用,并根据膨胀节最大允许偏转角度以及内部导体允许的最大偏转角度,选择合适的中间段长度。The thermal deformation of the suspended gas insulated metal enclosed transmission line(GIL)during operation is studied.Then,the hinged corrugated expansion joint is adopted to absorb or compensate the thermal deformation of the GIL enclosure shell.Considering that the hinged corrugated expansion joint must be used in pairs,the appropriate length of the middle section should be selected according to the maximum allowable deflection angle of the joint and the inner conductor.

关 键 词：气体绝缘金属封闭输电线路 铰链型波纹膨胀节 角向位移 

分 类 号：TM312[电气工程—电机]