Transmission lines ice flash may occur continously in large scale under particular climate conditions, which is serious threat to power grid security. In year 2010 to 2011, large scale ice flash accident happened again in Southern Power Grid after ice disaster in 2008. An active anti-icing coating for oveihead transmission line insulator was proposed. The coaling painting methods on insulator surface were also developed. The testing results in climate chamber verifies the significant anti-icing effect of proposed coating material. The coating can delay and reduce the formulation of ice on insulator, which in turn reduce transmission line ice flash accident rate. Observation and montioring data on field device shows thai proposed anli-icing coaling has practical effect. However. field constructin technology and environmental condition of overhead transmission lines have big impact on the effect of anti-icing coaling. Further study on coating application is needed in older to achieve practical goals.%输电线路覆冰闪络严重威胁电网安全,在特定气候条件下可能大范围、连续发生,南方电网继2008年冰灾后,2010-2011年再次发生大范围冰闪事故.研发了输电线路绝缘子主动式防冰涂料,设计了新型防冰涂料在绝缘子表面的喷涂方式,并通过人工气候室试验验证了防冰涂料具有显著的防冰效果,能够明显减少、延缓绝缘子冰层形成,减少线路冰闪事故.输电线路人工观冰和监测数据分析表明,新型防冰涂料具有实际的防冰效果,但施工工艺和输电线路现场特殊环境条件影响了新型涂料的防冰应用,需要进一步开展防冰涂料的应用研究,以达到实用化目标.
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