直流融冰技术探讨

通过对几种热力除冰法进行分析比较发现，对500kV输电线路，采用直流电流融冰是唯一可行的热力法。直流融冰技术的关键在于直流装置的开发及合理利用，文章对几种可行的直流融冰法进行了对比。鉴于元器件参数的限制，提出由多台容量较小的整流装置并联运行方案，以解决大容量整流装置制造上的难题，并可适应各种线路的融冰要求，而在正常时期，将装置稍作改动即可作为静止式动态无功补偿装置使用，以充分利用设备资源。

Discussion on the Deicing Technology Using DC Current

This paper analyses several deicing methods which make use of heat and concludes that melting ice using dc current is the only viable way of deicing by heat to 500 kV transmission line.Key point of the deicing technology using dc current is development and rational utilization of the dc current generating equipments,so,several feasible methods using dc current is compared in this paper. In respect of the component parameters' limitation,this paper puts forwards a scheme of several converting devices with smaller capacity to be operated parallelly.This scheme can settle the problem of manufacturing converting devices with big capacity,and also, it can adapt to the deicing requirements of all kinds of lines.What's more,this equipment can be used as static var compensator with little change during common times,so people can make the best of the equipment.