According to related codes and standards the design method and some practice problems of grounding are discussed, combined with working principle of grounding of instrumentation and control system.

结合仪表及控制系统接地的工作原理，根据有关规范，讨论了接地工程的设计方法和一些实际问题。

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In this paper, a new method for DC system grounding fault detecting is presented.

文中提出直流系统接地故障检测方法。

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This method is suited for various distribution system with different neutral grounding modes. Moreover, it can be easily used in site without adjusting protective setting.

该方法适用于小接地电流系统的各种中性点运行方式，并且现场安装简单、不需要定值整定。

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