摘要
在主变压器低压侧近端发生短路故障时,越靠近主变压器侧短路电流越大,因短路电流过大不易保护主变压器,选择设备时采用限流电抗器来限制短路电流,电抗器的选择既要满足限流的要求,还要考虑外网故障或设备群起时的压降及损耗。结合公司变电站实际情况,在主变压器低压侧不同点发生短路故障时,根据短路点电流的大小加装合适的限流电抗器和大容量快速接入开关,有效抑制短路电流,保护设备。
When a short circuit fault occurs near the low-voltage side of the main transformer,the closer it is to the main transformer side,the greater the short circuit current.Due to the excessive short circuit current,it is difficult to protect the main transformer.When selecting equipment,current limiting reactors are used to limit the short circuit current.The selection of reactors should not only meet the requirements of current limiting,but also consider the voltage drop and loss when external network faults or equipment groups occur.Based on the actual situation of the company's substation,when short-circuit faults occur at different points on the low-voltage side of the main transformer,appropriate current limiting reactors and high-capacity quick access switches should be installed according to the magnitude of the short-circuit current at the point,thereby,effectively suppressing short-circuit current and protecting equipment.
作者
白永明
乔守鹏
张鹏
BAI Yongming;QIAO Shoupeng;ZHANG Peng(Shaanxi Beiyuan Chemical Group Co.,Ltd.,Yulin 719319,China)
出处
《氯碱工业》
2026年第4期1-7,42,共8页
Chlor-Alkali Industry
关键词
短路电流
限流电抗器
能耗
大容量快速开关
short circuit current
current limiting reactor
energy consumption
large capacity quick switch
