同塔多回特高压输电线路电磁环境影响研究

Research on Electromagnetic Env ironment Impact of Multi-circuit UHV TransmissionLines on the Same Tower

随着环保意识的不断增强,特高压输电线路的磁场环境问题日益引起重视,并成为制约我国特高压发展和建设的重要因素。与常规超高压输电线路相比,特高压线路的电压等级高、电流大、输送容量大、导线截面大、分裂导线多,对周围环境造成的电磁干扰是不容忽视的,处理不当会给沿线环境带来一定影响。基于此,以特高压交流多回路输电线路对电磁环境的影响为研究对象,通过对高压多回线路所采用的塔形、导线架高、相间距、相序排列、分裂导线根数、分裂子间距及分裂子导线直径等不同参数的分析,利用计算机辅助分析软件得出降低特高压电磁环境影响的具体措施。通过分析与对比不仅能为特高压交流输电线路的优化结构设计提供参考和建议,还能消除公众对特高压输电线路运行产生电磁污染的疑虑和误解。

With the continuous enhancement of environmental protection awareness,the magnetic field environment of UHV transmission lines has att racted increasing attention,and has become an important factor restricting the develop ment and construction of UHV in my country.Compared with conventional UHV transmission lines,UHV lines have high vol tage levels,large currents,large transmission capacity,large wire sections,and many split wires,and the electro-magnetic interference caused to the surrounding environment cannot be ignored,and improper handling will have a certain impact on the environment along the line.Based on this,taking the influence of UHV AC multi-loop transmission lines on the electromagnetic environment as the research object,through the analysis of different parameters such as tower shape,conductor height,phase spacing,phase sequence arrangement,number of split conductors,splinter spacing and splinter conductor diameter used in HV multi-loop lines,computer-aided analysis software is used to obtain specific measures to reduce the impact of UHV electromagnetic environment.Through analysis and comparison,it can not only provide refer-ence and suggestions for the optimal structural design of UHV AC transmission lines,but also eliminate the public's doubts and misunderstandings about elect romagnetic pollution generated by the operation of UHV transmission lines.