500kV线路串联补偿电容器组的接线方式及保护  

Connection mode and protection of 500 kV transmission line series compensation capacitor bank

作　　者：祁胜利 赵海纲 钱锋[2] 

机构地区：[1]大同超高压供电公司,山西大同037038 [2]华北电力科学研究院有限责任公司,北京100045

出　　处：《电力系统保护与控制》2010年第4期63-67,73,共6页Power System Protection and Control

摘　　要：分析了串补平台接线方式、CT配置对电容器和MOV保护的影响,以及火花间隙保护配置。比较了电容器组1个H形桥和2个H形桥接线,后者较前者可以更快定位故障的电容器;比较了这两种接线的CT配置,配置有电容器总支路CT的接线,可以更好地实现断路器合闸失灵保护,在不平衡保护的整定方面应该区别对待;比较了有分支和无分支MOV接线形式及其CT配置,前者较后者更容易检测故障单元,有分支接线可以更好地实现MOV故障保护。火化间隙应该配置自触发、拒触发、延时触发、持续触发保护,更好实现对一次设备的保护。This paper analyzes how do connection of series compensation and the CT configuration affect the capacitors and MOV protection, and the spark gap protection configuration. Comparing the capacitor of 1 H-shaped bridge connection with that of 2, the latter is faster at locating the fault capacitor. As for the two connections, the one equipped with capacitor circuit branch CT can achieve the protection better when circuit breaker fails. So, it should be treated differently while setting the unbalance protection. It compares the branching with non-branchings in the connections of MOV and CT configuration. The former can detect false units easier while the latter can better achieve the protection of MOV fault. Spark gap should be configured with the self triggering, refuse triggering, delay triggering, continuous triggering protection, which is better for realizing primary equipment protection.

关 键 词：串联电容补偿 保护 二次系统 设计 接线 

分 类 号：TM761[电气工程—电力系统及自动化]