500kV超高压输电线路负荷交流融冰分析  

Analysis of AC Melting Ice of 500kV Ultra High Voltage Transmission Line Load

作　　者：何相升 罗刚 胡龙江 张山河 张灿 HE Xiangsheng;LUO Gang;HU Longjiang;ZHANG Shanhe;ZHANG Can(State Grid Hubei Electric Power Co.,Ltd.,Ultra High Voltage Company,Xiangyang 441000,China)

机构地区：[1]国网湖北省电力有限公司超高压公司,湖北襄阳441000

出　　处：《通信电源技术》2022年第23期67-69,共3页Telecom Power Technology

摘　　要：通过深入研究输电线路融冰方法,进一步提高输电线路的运行安全性。首先在热传学基础上分析融冰热力学的基本特点,并构建了500kV架空输电线路JLHA3-425铝绞线覆冰模型;其次,通过仿真模型分析了增加融冰负荷电流后覆冰导线的温度情况,以此得到风速、温度、冰层厚度与融冰时间、融冰电流之间关系;最后,在安双5375超高压线路实际操作中证实融冰方式的可操作性和有效性,希望能够推动架空输电线路融冰技术的创新和发展。The safe operation of transmission lines can be further improved through in-depth study of the ice melting method of transmission lines.Firstly,the basic characteristics of ice melting thermodynamics are analyzed on the basis of heat transfer,and the icing model of JLHA3-425 aluminum stranded wire of 500kV overhead transmission line is constructed.Secondly,through the simulation model,the temperature of the ice-covered conductor after increasing the load current of ice melting is analyzed,and the relationships among wind speed,temperature,ice thickness,ice melting time and ice melting current are obtained.Finally,the actual operation of Anshuang 5375 EHV transmission line proves the operability and effectiveness of the ice melting method,hoping to promote the innovation and development of the ice melting technology of overhead transmission lines.

关 键 词：500KV超高压输电线路 负荷交流融冰 覆冰模型 

分 类 号：TM721.1[电气工程—电力系统及自动化]