导线表面最大场强对直流输电线路电磁环境的影响分析  

Influence Analysis of Conductor Surface Maximum Electric Field Strength on DC Transmission Line Electromagnetic Environment

作　　者：袁海燕[1] 庄燕飞[2] 姚金霞[1] 刘民[1] 

机构地区：[1]山东电力集团公司电力科学研究院,济南250002 [2]山东电力集团公司检修公司,济南250021

出　　处：《高压电器》2013年第10期7-12,共6页High Voltage Apparatus

基　　金：山东电力集团公司项目(JS-09018)~~

摘　　要：介绍了高压直流输电线路导线表面最大场强和线路电磁环境参数的计算方法。针对±660kV直流输电线路，分析了导线表面最大场强对地面合成电场、地面离子流密度、无线电干扰和可听噪声的影响。得出正极导线电压在620～680kV之间变化时．随着导线表面最大场强的增大．地面合成电场和地面离子流密度分别增加1．2倍和2．8倍；导线表面最大场强对无线电干扰和可听噪声的影响相对较小．分别增加17％和0．3％。±660kV直流输电线路在额定电压范围内运行时．电磁环境指标不会超出《高压直流架空送电线路技术导则》的规定。The calculation method of the HVDC transmission line conductor surface maximum field strength and electromagnetic environment parameters. For ±660 kV DC transmission line, the influence of the conductor surface maximum field strength on the ground synthetic electric density, radio interference and audible noise were analyzed. When the between 620 kV to 680 kV, with the increase of the conductor surface synthetic ground electric field and ground ion current density increase by influence on the radio interference and audible noise are relatively small, 17% and 0.3% respectively. When the ±660 kV DC transmission line electromagnetic environmental indicators will not exceed the specified value field, the ground ion current positive conductor voltage is maximum field strength, the 1.2 times and 2.8 times. The and the increased values are is under rated voltage, the in high voltage direct current overhead transmission line technical guidance.

关 键 词：导线表面最大场强 地面合成场强 地面离子流密度 无线电干扰 可听噪声 

分 类 号：TM751[电气工程—电力系统及自动化]