复线接触网感应电压的测试

复线接触网的感应电压危及施工人员生命安全 ,影响施工质量和进度。为了找到限制复线接触网感应电压的措施 ,对广州—深圳电气化铁道第三接触线 (以下简称第三线 )上的感应电压进行了实测 ,发现第三线悬浮状态时的感应电压可达 3 0 0 0V以上 ;第三线测试区段的一端或两端接地且相邻高速接触线 (以下简称高速线 )上无电力机车时第三线的感应电压基本可以忽略 ,当高速线上有电力机车时第三线感应电压瞬时超过数百伏。

The induced voltage caused by OCS on double-track line endangers the personal safety of workers and affects the construction quality and progress.In order to reduce the voltage a test is carried out on the contact wire of the third railway line(called the third line for short)in Guang Zhou_ShenZhen line.If the contact wire on the third line is not earthed,its induced voltage may reach over 3 000 V ;if its one end or two ends are earthed,the instantaneous valve of the voltage may reach hundreds of volt under an electric locomotive running on the adjacent track line,but the voltage may be overlooked without one.