多回高压输电线路产生的无线电干扰分析

Radio interference analysis from multi-circuits AC high voltage overhead power transmission lines

在规划设计 ,中关村软件园东侧将建设包括 4回 2 2 0kV四分裂导线、6回110kV单导线构成的 10回高压输电线路。为了评估该高压线路走廊对软件园的电磁环境影响 ,在简述高压输电线路由于电晕产生的无线电干扰的基础上 ,分析单回2 2 0kV四分裂导线、2 2 0kV不采用分裂导线两种情况下的无线电干扰水平 ,由此估计该 10回输电线路产生的无线电干扰水平。结果表明 ,该高压线路走廊产生的无线电干扰水平符合国家标准GB15 70 7 1995《高压交流架空送电线无线电干扰限值》相应的要求。

To near east of Zhongguancun Software Park, there are ten circuits consisting of four circuits 220kV and six circuits 110kV high voltage transmission lines under planned construct.For evaluating the electromagnetic environment influences of these high voltage transmission lines on Zhongguancun Software Park, we firstly discussed radio interference phenomena of high voltage transmission line owing to corona, and then analyzed the radio interference level of single circuit 220kV with or no four bundle conductors.Based on this case, we evaluated the radio interference of these ten high voltage transmission lines.It shows that the radio interference level is accord with the limits listed in GB15707 1995.