向家坝-上海特高压直流输电线路对地磁观测环境影响的试验研究

摘要

During the period of the preliminary electriferous testing of Xiangjiaba-Shanghai +800 kV UHV DC transmission line with full voltage and total power in June 2010, the geomagnetic synchronous experiment at multi-observational points was analyzed. The test results show that if there is the electrical current on the plate lead or under the ground, the interference to geomagnetism observation is unavoidable. Magnetic vertical component and horizontal component would be effected, especially magnetic vertical component would be effected seriously.%在向家坝上海±800 kV特高压直流输电线路2010年6月全电压全功率带电调试期间,进行多测点同步地磁观测试验.结果表明,只要直流线路在极导线上或大地里存在电流,就会对地磁观测产生影响,引起地磁垂直分量Z和水平分量H产生台阶型变化,且垂直分量Z影响更大.