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[问答题] 系统的解列点应如何设置?

The type of fog that occurs on clear nights with very light breezes and forms when the earth cools rapidly by radiation is known as(). ["Radiation fog","Frontal fog","Convection fog","Advection fog"] 进度控制的最终目标是()。 ["销售进度","工序进度","投入进度","产出进度"] Statutory survey could be divided into two kinds, they are () ["first survey and certificate exchange survey","first survey and operation survey","first survey and periodic survey","classification survey and certificate exchange survey"] ()is not the main function of CCS. ["ship products survey","notarization survey","ship safety inspection","counseling service and publishing ship name list"] The two vessels underway may collide with(),if they don’t take immediate measures. ["One to another","One the other","Each the other","Each other"] 系统的解列点应如何设置?
参考答案:

(1)当系统中非同期运行的各部分可能实现再同期,且对负荷影响不大时,应采取措施,以促使将其拉入同期。如果发生持续性的非同期过程,则经过规定的振荡周期数后,在预定地点将系统解列。
(2)当故障后,难以实现再同期或者对负荷影响较大时,应立即在预定地点将系统解列。
(3)并列运行的重负荷线路中一部分线路断开后或并列运行的不同电压等级线路中主要高压送电线路断开后,可能导致继续运行的线路或设备严重过负荷时,应在预定地点解列或自动减负荷。
(4)与主系统相连的带有地区电源的地区系统,当主系统发生事故、与主系统相连的线路发生故障或地区系统与主系统发生振荡时,为保证地区系统重要负荷的供电,应在地区系统设置解列点。
(5)大型企业的自备电厂,为保证在主系统电源中断或发生振荡时,不影响企业重要用户供电,应在适当地点设置解列点。

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