特高压直流输电线路下合成电场测量与分析  

Measurement and Analysis of Total Electric Field of UHVDC Transmission Lines

作　　者：潘晓彤 唐露甜 韩文 杨彬 耿明昕 PAN Xiao-tong;TANG Lu-tian;HAN Wen;YANG Bin;GEN Ming-xin(Research Institute of State Grid Shaanxi Electric Power Company,Xi'an 710049,China)

机构地区：[1]国网陕西省电力公司电力科学研究院,陕西西安710049

出　　处：《水电能源科学》2021年第12期197-200,共4页Water Resources and Power

基　　金：国网陕西省电力公司科技项目(5226KY180023)。

摘　　要：特高压直流输电线路电磁环境复杂,其合成场强的分布有待研究。先基于相敏电路处理直流电场感应信号的数学分析方法,研制了一种可开展合成场强测试的电场仪,然后进行直流电场仪的校准和误差测试。并选取某±1100kV线路段开展了合成场强分布研究,结果表明直流电场仪整体误差小于2%,测量精度较高;不同运行工况下的合成场强分布规律不一致;合成场强受风速、风向等环境因素的影响。研究结果可为特高压直流线路的设计提供技术支撑。Electromagnetic environment of the UHVDC transmission line is complex,and the distribution of its total electric field needs to be studied.Firstly,based on the mathematical analysis method of phase sensitive circuit to deal with the DC field induction signal,an electric field instrument which could carry out total electric field test was developed in this paper.Then,the calibration and error test of the DC electric field instrument was carried out.Finally,a certain±1100 kV transmission lines was selected to study the distribution of the total electric field.The test results show that the overall error of the DC field meter is less than 2%,and the measurement accuracy is high.The distribution law of synthetic field intensity under different operating conditions is not consistent.The total electric field is influenced by environmental factors such as wind speed and wind direction.The results can provide technical support for the design of the UHVDC lines.

关 键 词：特高压直流 合成场强 校准 测量误差 运行工况 环境因素 

分 类 号：TM721[电气工程—电力系统及自动化]