直流接地处理方法及实例

Method and Example of DC Grounding Processing

直流系统一点接地短时间内不影响直流系统的正常工作,但长期运行易发展形成两点接地,可能引起保护误动或拒动等;危害很大,会直接影响设备的安全,造成的后果很严重。因此,当直流系统一点接地时,应快速、有效地查找接地点,并尽快消除;处理好直流接地,可以省时省力,避免事故扩大。处理直流接地的方法很多:有拉路法、绝缘监察装置选线法、便携式接地选线装置选线法、排除法等,各种方法交互使用,可以达到方便、实用、可靠、易行的效果;有典型实例为证。

The dc system does not affect the normal operation of the dc system for a short time, but the long-term operation is easy to develop and the ground is formed, which may cause protection misoperation or rejection. The harm is very big, can directly affect the safety of the equipment, the result is very serious. Therefore, when the dc system is grounded, it should quickly and efficiently find the location and eliminate it as soon as possible. It can save time and effort and avoid the expansion of accidents. Processing of dc grounding method are many: a drawing method of road line selection method, insulation monitoring device, portable grounding line selection device line selection method, the method and so on, all kinds of method of interactive use, can achieve the result of convenient, practical, reliable, and easy; There are typical examples.