高电压技术2012，Vol.38Issue(11)：3060-3066,7.
输电线路柔性直流融冰技术
Flexible DC Ice-melting Technology for Transmission Line
摘要
Abstract
To improve the application of DC ice-melting technology in power grids,a new type of flexible DC icemelting technology was proposed.Based on analysis on the equivalent model of frozen transmission lines and the heat exchange during ice-melting,the necessary anti-icing current and maximum current were calculated for a 220 kV power line.A novel flexible DC ice-melting power based on self-commutated semiconductors was designed according to the calculation results.The main circuit topology,mathematical model and control strategy of the power unit module were introduced and discussed.Finally,a full-controlled DC ice-melting device prototype was developed,of which the test has been carried out too.Test results show that the ice-melting device can regulate DC output flexibly,while the harmonic contents on line side,which is only 3.16%in the test,also meet requirements.关键词
输电线路/保线电流/柔性直流融冰/功率单元模块/双闭环解耦控制/绝缘栅双极型晶闸管（IGBT）Key words
transmission line/anti-icing current/DC ice-melting/power unit module/double-loop decoupling control/insulated gate bipolar transistor(IGBT)分类
信息技术与安全科学引用本文复制引用
敬华兵,年晓红..输电线路柔性直流融冰技术[J].高电压技术,2012,38(11):3060-3066,7.基金项目
国家自然科学基金 （）
