不完全电流差动保护在无电源支路故障时，若故障电流反馈至母线，可能被误判为母线故障（ ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69493' and id < 4501612 and id<>'4501612' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69493' and id > 4501612 and id<>'4501612' order by id asc limit 5