直流输电线路附近民房平台上直流合成电场的测量影响因素分析  

Analysis of influencing factors for measurement of total electric field on residential platform nearby DC transmission line

作　　者：王延召 徐吉来 干喆渊 张建功 WANG Yan-zhao;XU Ji-lai;GAN Zhe-yuan;ZHANG Jian-gong(China Electric Power Research Institute,State Key Laboratory of Power Grid Environmental Protection,Wuhan 430074,China)

机构地区：[1]中国电力科学研究院有限公司电网环境保护国家重点实验室,湖北武汉430074

出　　处：《电工电能新技术》2022年第11期82-88,共7页Advanced Technology of Electrical Engineering and Energy

基　　金：国家电网公司科技项目(5100201955410A0000)。

摘　　要：随着直流输电线路的增加,直流电磁环境越来越接近居民区,加上GB 39220—2020《直流输电工程合成电场限值及其监测方法》的颁布实施,对于民房平台上的电场进行准确测量和评价显得尤为重要。本文首先对不同尺寸场磨的畸变范围进行计算,然后基于实际的民房平台模型计算分析女儿墙高度及其场磨与其相对位置对民房平台上的直流合成电场测量影响,最后对民房平台上直流合成电场进行了实测,验证了计算的准确性,从而为直流输电线路附近民房平台上直流合成电场的准确测量提供参考。With the DC electromagnetic environment is getting closer and closer to residential areas and the promulgation and implementation of GB 39220—2020“Total Electric Field Limits and Monitoring Methods for HVDC Transmission Projects”,it is particularly important to accurately measure and evaluate the electric field on the residential platform.The distortion range of field mill with different sizes is calculated,and the theoretical space size required for accurate measurement of different probe sizes is determined.Then simulation model of the residential platform is established,and the electric field distribution on the actual residential platform near DC transmission line is theoretically calculated.The impact of the height of the parapet wall on electric field at the residential platform is analyzed.The actual measurement results verify the accuracy of the calculation.And a technical basis for the electric field measurement and evaluation on the residential platform near the DC transmission line is provided.

关 键 词：直流线路 民房平台 畸变电场 测量方法 

分 类 号：TM93[电气工程—电力电子与电力传动]