兴安直流兴侧接地极引线融冰情况分析及可行性建议

Analysis and feasible advice of ice melting for lead of grounding electrode at DC side in Xing'an

为了解决西北部高寒地区冬季直流输电线路和接地极引线上的覆冰问题,阐述了兴安直流兴侧接地极线路设计参数、融冰的必要性和融冰情况,通过兴安直流兴侧接地极引线近年来的融冰记录和分析计算,提出了接地极引线融冰时对直流系统运行极性、接线方式、融冰电流、融冰时间选择上的可行性建议,这对后续直流系统接地极引线融冰具有很好的借鉴作用。

In order to solve icing on lead of DC transmission line and grounding electrode in winter in northwestern alpine region, this paper expounds parameters design, necessity and situation of ice melting of lead of grounding electrode at DC side in Xing＇an, and proposes feasible advice for the selection of operation polarity, connection mode, ice melting current and ice melting time for DC transmission line on the basis of the record and analysis of ice melting in recent years, which provides evidence for the continuation of ice melting for lead of trode in DC system. grounding electrode in DC system.