简单电力系统中同步发电机并列运行暂态稳定的条件是(  )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69515' and id < 4503507 and id<>'4503507' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69515' and id > 4503507 and id<>'4503507' order by id asc limit 5