由于故障电流小、故障信号微弱、故障情况复杂及系统运行方式多样等原因，接地选线题目一直没有得到很好的解决。
Due to the small fault current, unobvious fault features, the complex fault circumstances and the various system run mode, the problem of fault line detection hasn't been well settled.
针对中性点经消弧线圈接地的小电流接地系统，设计了一套单相接地补偿及选线的微机保护装置。
Aim at an-arc suppression reactor earthing power system, we design a suit of microcomputer system for compensating single-phase earthing current and selecting line.
针对中性点经消弧线圈接地的小电流接地系统，设计了一套单相接地补偿及选线的微机保护装置。
Aim at an-arc suppression reactor earthing power system, a suit of microcomputer system for compensating single-phase earthing current and selecting line was designed.
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