后建接地极对埋地管道的干扰

Interference of Second-building Grounding Electrode on Buried Pipeline

通过相关软件模拟了后建接地极对埋地管道的影响,探讨了后建接地极与管道的距离对管道电位分布的影响规律,得到了以下结论:接地极对管道的影响是通过影响原有电流回路和直接作用两种方式来实现的;当后建接地极与管道靠近时,管道附近的两个接地极的极性如果相同,则对管道的影响是叠加的;反之,则会减弱管道上的电位偏移。

The influence of second-building grounding electrode on buried pipe was simulated by related software and the influence rules of the distance between second-building gruunding electrode and pipeline on pipeline potential distribution were discussed. The following conclusions were obtained： the effect of grounding electrode on pipeline was achieved by affecting both the original current loop and direct action. When second-building grounding electrode was close to pipeline, if the polarity of two grounding electrodes near pipe was the same, the influence was strengthened; on the contrary, it was weakened.