发明名称 Digital distance relay
摘要 In a digital distance relay, the distance measuring operation is performed only regarding the phase on duty in the third step if there is no fault, and it is performed regarding either the third and first steps or the third and second steps if a fault is detected within the third step. Thereby the processing time for the distance measuring operation may be reduced is that corresponding to two steps per sampling.
申请公布号 US4689709(A) 申请公布日期 1987.08.25
申请号 US19850795449 申请日期 1985.11.06
申请人 MITSUBISHI DENKI KABUSHIKI KAISHA 发明人 ISAHAYA, KEIJI
分类号 H02H3/40;H02H7/26;(IPC1-7):H02H3/26 主分类号 H02H3/40
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