温湿度对±500kV直流输电线路电磁环境的影响  

Influence of Temperature and Humidity on Electromagnetic Environment of ±500kV DC Transmission Lines

作　　者：李妮 张斌 代少君 万皓 刘健犇 陈玉龙 LI Ni;ZHANG Bin;DAI Shao-jun;WAN Hao;LIU Jian-ben;CHEN Yudong(Wuhan Branch,China Electric Power Research Institute,Wuhan 430074,China;Wuhan Power Supply Company,State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430013,China)

机构地区：[1]中国电力科学研究院有限公司武汉分院,湖北武汉430074 [2]国网湖北省电力公司武汉供电公司,湖北武汉430013

出　　处：《水电能源科学》2018年第10期198-200,共3页Water Resources and Power

基　　金：湖北省科学基金重点项目(2015CFA155)

摘　　要：为获取温度、湿度对实际运行的直流输电线路电磁环境影响情况,通过在±500kV宜华线建立长期观测站,开展无线电干扰、可听噪声、直流合成场与气象参数的长期测试,并对测试数据进行了统计分析。结果表明,湿度对无线电干扰有较大影响,好天气下可听噪声较小,直流合成场变化范围较大;在温度为5~30℃时,湿度每增加1%,0.5MHz无线电干扰降低0.042~0.089dB,平均降低0.066dB。研究结果可为直流输电线路设计和电磁环境研究提供参考。In order to obtain the impact of temperature and humidity on electromagnetic environment of DC transmission lines in the actual operation,long-term observation station was set up near the±500 kV Yihua line to carry out longterm measurement on radio interference,audible noise,DC total electric field strength and meteorological parameters,and the measurement data were analyzed by statistical analysis.The results show that the humidity has a great influence on radio interference,the audible noise is low under fair weather,and the total DC electric field strength varies significantly;When the temperature is between 5℃and 30℃,the humidity increases by 1%,the radio interference at 0.5 MHz is reduced by 0.042 dB to 0.089 dB,and the average decrease of 0.066 dB.The research results can provide reference for design of DC transmission lines and study on electromagnetic environment.

关 键 词：直流输电 无线电干扰 可听噪声 合成场强 多元回归分析 

分 类 号：TM93[电气工程—电力电子与电力传动]