覆冰输电线路除冰技术研究综述

Summary on Ice Melting Technology of Ice-covered Transmission Lines

针对目前威胁输电线路安全稳定运行的覆冰问题,介绍了国内外现有输电线路的融冰、除冰技术成果,阐述了热力融冰法、机械除冰法、自然脱冰法和其他新型融冰方法的技术原理,并对各种除冰方法的操作难易程度、除冰过程中的优缺点及融冰装置的可行性进行说明,得出结论:目前电网设备的除冰措施在应用过程中均存在自身局限性,应加强冰灾成因的理论研究,从根源上降低雨雪冰冻天气对电力系统的危害程度。

In view of the ice-covered problem threatening the safe and stable operation of transmission lines,this paper introduces the technology achievements of ice-melting and ice clearing of existing transmission lines at home and abroad.The technical principles of thermal ice-melting method,mechanical ice clearing method,natural de-icing method and other new ice-melting methods are expounded in detail.The operation difficulty of various ice clearing methods,the advantages and disadvantages in the process of ice clearing and the feasibility of ice-melting devices are explained.It is concluded that the ice-covered measures of power grid equipment have their own limitations in the application process.The theoretical research on the causes of ice disaster should be strengthened to reduce the harm of rain and snow freezing weather to the power system from the root.