分级式可控高压并联电抗器控制部分短路判别新原理

发布时间：2018-01-10 15:25

本文关键词：分级式可控高压并联电抗器控制部分短路判别新原理　出处：《电力系统自动化》2015年04期 　论文类型：期刊论文

【摘要】：介绍了分级式可控高压并联电抗器的原理结构,分析了控制部分短路故障对各控制支路的电流的影响,得出短路点所在控制支路及下级控制支路电流发生显著变化的结论,并提出如下保护方案:通过实时采集电流计算流过各辅助电抗器的电流值,分析以辅助电抗器的理论电流值作为基础的故障电流定值制定方案,两者比较构成故障电流判据,实现对故障进行判断并判别故障位置的作用。RTDS试验结果反映了此保护具有以下特点:不仅能对控制部分的短路故障进行快速判断,而且能对短路故障发生的位置进行区分,故障判据灵敏、短路故障覆盖范围广且定值易整定。
[Abstract]:This paper introduces the principle structure of the stepwise controllable high voltage parallel reactor, and analyzes the influence of the control partial short circuit fault on the current of each control branch. It is concluded that the current of the control branch at the short circuit point and that of the control branch at the lower level change significantly, and the following protection scheme is put forward: the current value of the auxiliary reactor is calculated by the real-time collection of current. The scheme of fault current setting based on the theoretical current value of auxiliary reactor is analyzed, and the fault current criterion is compared with each other. RTDS test results show that this protection has the following characteristics: not only can the control part of the short-circuit fault quickly judge. In addition, it can distinguish the location of short circuit fault, the fault criterion is sensitive, the short circuit fault covers a wide range and the fixed value is easy to be adjusted.
【作者单位】：南京南瑞继保电气有限公司;
【分类号】：TM472
【正文快照】： 0引言可控高压并联电抗器(简称可控高抗)作为一项关键的柔性交流输电应用,由于其控制灵活、造价低、可靠性高,不仅能够协调超/特高压、大容量、远距离输电系统中无功补偿与过电压抑制的矛盾,还可抑制工频过电压和潜供电流,提高系统稳定性,在电网中具有广泛的应用前景[1-5]。目

【共引文献】