中南大学学报（自然科学版）2016，Vol.47Issue(5)：1551-1558,8.DOI:10.11817/j.issn.1672-7207.2016.05.014
超/特高压输电线路带电直流融冰方法
Aliving DCice-meltingapproach for UHV & EHV transmission lines
摘要
Abstract
Inorder to solve the problem oftraditional deicing technologies requiring power failurewhen transmission lines are extremely accumulated by ice, an energizeddirect current (DC)ice-melting solution was proposed for high voltage(EHV)or ultra high voltage(UHV)transmission lines which used bundled conductors, and a field test was conducted. Taking a UHV transmission line with two-bundle conductors and insulating spacer as an example, the simulation model of ice-melting circuit was established by ATP software, and the problems of ice-melting power, installation position, power selection andthe effects of DC current in the ice-melting period ontheexternal circuit were analyzed. The results show that the three-phase halfcontrolled bridge rectifier (full control) and DC generators are effective ways to obtain ice-melting power.The most idealposition of installing power supply device is the middle of ice-melting section. DC ice-melting current of melting-circuitswillnot flow outside,whichhas no effect on the amplitude and waveform of exterior line voltage and current. The methodensures the normal and stable operation in the ice-melting process with load, and overcomes the limitations existinginice-melting methodswhich can not energized ice melting.关键词
分裂导线/带电/直流融冰/融冰回路Key words
bundled conductors/energized/DC ice melting/ice-melting circuit分类
信息技术与安全科学引用本文复制引用
罗日成,潘俊文,刘化交,邹德华,俞乾..超/特高压输电线路带电直流融冰方法[J].中南大学学报（自然科学版）,2016,47(5):1551-1558,8.基金项目
国家自然科学基金资助项目(50977003)；电力与交通安全监控及节能技术教育部工程研究中心基金资助项目(2010#03)(Project(50977003)supported bytheNational Natural Science Foundation of China （50977003）
Project(2010#03)supported bythePower andTrafficSafety Monitoring andEnergySavingEngineeringResearchCenter of Ministry of EducationFundCode) （2010#03）
