摘要
为提高短波监测质量及效率,避免电磁干扰的影响,对严重影响短波监测工作的高压电力线路有源干扰产生机理进行了深入分析,并采用垂直偶极子模型辐射场及单根高压线起晕场计算原理进行3MHz—30MHz电磁干扰建模分析研究。同时对高压电力线有源干扰基准电平进行定量计算,最后与实测数据进行对比验证。研究结果表明,在3MHz—30MHz频率范围内,存在多根高压线与仅存在单根高压线相比,其电磁干扰电场强度的变化是不同的,这两种情况下的电磁干扰变化趋势与实测数据场强的变化基本一致。
In order to enhance quality and efficiency shortwave monitoring and avoid the influence of electromagnetic interference, active jamming mechanism of high voltage power line affecting shortwave monitoring was analyzed in this paper. According to the calculation principles of vertical dipole model radiation ifeld and corona ifeld of single high voltage power line, 3MHz—30MHz electromagnetic interference was modeled and analyzed. In addition, active interference benchmark level of high voltage power line was quantitatively calculated and compared with tested data. Results show that, in frequency range of 3MHz—30MHz, the strength of electromagnetic interference is different in the conditions of multiple and single high voltage power lines; but the change trend of electromagnetic interference in these two conditions is overall consistent with the change trend of tested data ifeld strength.
出处
《移动通信》
2015年第10期66-70,共5页
Mobile Communications
关键词
高压电力线
短波监测
有源干扰
起晕场
high voltage power line
shortwave monitoring
active jamming
corona ifeld
