浅谈主变低压侧近区相间短路故障及限流技术  

Brief talk on short circuit fault in near areaof low voltage side of main transformer andcurrent limiting technology

作　　者：白永平 王进 米海军 刘玉斌 BAI Yong-ping;WANG Jing;MI Hai-jun;LIU Yu-bin(Shaanxi Beiyuan Chemical Industry Group Co.,Ltd.,Yulin 719319,China)

机构地区：[1]陕西北元化工集团有限公司,陕西榆林719319

出　　处：《中国氯碱》2021年第4期43-46,共4页China Chlor-Alkali

摘　　要：介绍了限制电气设备短路电流的方法,采用变压器分列运行、馈出线装设限流电抗器、采用高阻抗变压器、在变压器低压侧母线装设限流电抗器、变压器低压侧母线直接串联快速开关,或者将限流电抗器和快速开关并联后串联接入变压器低压侧母线等方法。解决了10 kV出现短路引起的主变穿越性故障外,从根本上避免了长时间使用电抗器带来的电压波动、电能损耗和漏磁场等问题,从而大大提高了供电质量。The methods of limiting short-circuit current of electrical equipment are introduced. The transformer is operated in series, the feeder is equipped with current-limiting reactor, the high impedance transformer is used,the current-limiting reactor is installed on the transformer’s low-voltage side bus,the transformer’s low-voltage side bus is directly connected in series with the fast switch,or the current-limiting reactor and the fast switch are parallel. The low voltage side busbar of transformer is connected in series after connection. Besides the main transformer crossing fault caused by short circuit of10 kV outgoing line,the problems of voltage fluctuation,power loss and leakage magnetic field caused by long-term use of reactor are fundamentally avoided,thus greatly improving the quality of power supply.

关 键 词：抑制 电抗器 限流 快速开关 断路器 

分 类 号：TM461[电气工程—电器]