10kV油浸式内置高压保护变压器技术研究  

Research on lOkV Oil Immersed Built-in High Voltage Protection Transformer Technology

作　　者：徐东伟 刘振雷 周永亮 XU Dong-wei;LIU Zhen-lei;ZHOU Yong-liang(Xuji Transformer Co.Ltd.,Xuchang 461000,China)

机构地区：[1]许继变压器有限公司

出　　处：《工程建设与设计》2019年第21期74-76,83,共4页Construction & Design for Engineering

摘　　要：传统柱上变压器台架上的跌落式熔断器存在露天安装、无防护、故障率高等缺点。为了解决这一问题,现提出一种新的柱上变压器的高压保护方式:将双因素保护负荷开关和后备限流熔断器内置于配电变压器油箱内,这样就取消了传统柱上变压器台上的柱上断路器和跌落式熔断器;双因素保护负荷开关取代了传统台架的柱上断路器,后备熔断器则取代了跌落式熔断器;同时将双因素保护负荷开关和后备限流熔断器内置于油浸式变压器。双因素保护负荷开关有单相感应、三相脱扣、重合闸功能,后备限流熔断器可以很好地防止变压器短路故障。The traditional drop out fuse on the column transformer has the disadvantages of outdoor installation,no protection and high failure rate.In order to solve this problem,a new high-voltage protection method is proposed:the dual factor protection load switch and the backup current limiting fuse are built in the oil tank of the distribution transformer,so that the columnbreaker and the drop type fuse breaker on the traditional column transformer platform are eliminated.The dual factor protection load switch replaces the column circuit breaker of the traditional bench,and the backup fuse replaces the drop fuse.At the same time,the dual factorprotection load switch and backup current limiting fuse are built in the oil immersed transformer.The dual factor protection load switch has the functions of single-phase induction,three-phase tripping and reclosing.The backup current limiting fuse can prevent the transformer from short circuit fault.

关 键 词：10kV油浸式全密封变压器 内置高压保护 双因素保护负荷开关 后备限流熔断器 配合保护 

分 类 号：TM4[电气工程—电器]