XIA CHANG-GEN, YANG FAN. Elimination Protection Malfunction by Removal of External Fuse. [J]. Power capacitor & reactive power compensation, 2012, 33(3): 65-68.
XIA CHANG-GEN, YANG FAN. Elimination Protection Malfunction by Removal of External Fuse. [J]. Power capacitor & reactive power compensation, 2012, 33(3): 65-68. DOI: 10.14044/j.1674-1757.pcrpc.2012.03.013.
撤除外熔丝消除保护误动
摘要
分析了宝安站35 kV并联电容器外熔断器误动的原因
比较了外熔断器和内熔丝的运行特点。针对宝安站并联电容器的具体情况
分析了取消外熔丝、只使用内熔丝和继电保护的可行性
并以单芯电缆替换原先的外熔断器对电容器组进行改造
经过一年多时间运行检验
说明该方法有效可行
提高了电容器运行可靠性
减轻了运行维护工作量。
Abstract
The cause of malfunction of external fuse of 35 kV shunt capacitor at Bao’an station is analyzed and operating characteristics of external fuse and internal fuse is compared.For the specific circumstance of shunt capacitor at Bao’an station
the feasibility of removing external fuse and only using the internal fuse and relaying protection.The capacitor bank can be modified by way of replacing original external fuse with single core cable.Through more than one-year operation
it is proved that the method is feasible
the operation reliability is improved and the maintenance work is reduced.
关键词
电容器内熔丝外熔断器不等臂双星形接线不平衡电流保护
Keywords
capacitorinternal fuseexternal fuseunequal double star connectionunbalance current protection