电容器内部故障的后备保护  

Backup Protection for the Internal Fault of Capacitor

作　　者：王敏[1] 杨昌兴[2] 赵启承[3] 

机构地区：[1]浙江省电力公司,杭州310007 [2]苏杭电气科学研究所,江苏吴江215228 [3]浙江省电力试验研究院,杭州310014

出　　处：《电力电容器与无功补偿》2008年第3期45-49,共5页Power Capacitor & Reactive Power Compensation

摘　　要：通过对电容器内部故障主保护失效后的故障状态,及其对后备保护的需求的研讨,分别提出:不平衡保护采取二段制配合整定配置;按电容器串联段数相应要求电容均衡程度;以及尽可能降低过电流保护定值等措施,以期充分发挥后备保护的作用。Through analyzing the fault states after the main internal tault protection out ot work and the need for the backup protection, this paper proposes the following measures to make the backup protection working properly： two sections coordination setting for unbalance protection; limiting the balance rate of the capacitors according to the number of the capacitor bank sections ; setting the over current protection to a possible lower value, etc.

关 键 词：电容器 内部故障 主保护 后备保护 

分 类 号：TM531.4[电气工程—电器]