《发电厂电气部分》(第四版)04-04-限制短路电流的方法
第四章电气主接线第四章电气主接线§4.4限制短路电流的方法引言限制短路电流的目的：①能够选择到符合要求的断路器；②能够选择到轻型断路器。限制短路电流的方法：①装设限流电抗器；②采用低压分裂绕组变压器；③采用不同的接线形式和运行方式。一、装设限流电抗器1.普通电抗器母线电抗器的作用：用于发电厂机压母线分段处；用于限制并列运行发电机所提供的短路电流。母线电抗器的参数：额定电流：按母线上事故切除最大一台发电机时可能通过电抗器的电流进行选择，一般取(50%~80%)IGN；电抗百分值：取8%~12%。(1)母线电抗器W1G1G2W2~~一、装设限流电抗器1.普通电抗器(2)线路电抗器W...
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