电力系统自动化2012，Vol.36Issue(13)：97-100,4.
高压电缆—架空线混合线路重合闸新判据
New Reclosing Criterion for Hybrid Lines of High-voltage Cables and Pole Lines
沈军 1李超群 2朱晓彤 1李力 1沈全荣 1陈松林1
作者信息
- 1. 南京南瑞继保电气有限公司,江苏省南京市211106
- 2. 上海电力设计院有限公司,上海市200025
- 折叠
摘要
Abstract
A new reactance relay based on the current of both sides is proposed, which is more accurate than traditional reactance relay based on the current of one side. The current on fault point is obtained with currents of both line ends in new reactance relay. Further, the current on fault point is used to construct an ideal zero phase sequence reactor, which is used to determine the fault coming from power cable or pole line. It is more exact than traditional fault locating with single end current or reactor. It has self-adaptive compensation to avoid over-reaching and under-reaching due to current infeed from remote end and is immune to various system operation modes. In addition, combining with the recognition criterion of a transient fault for a line with shunt reactor, the auto-recloser can reliably be blocked whenever a permanent fault occurs on hybrid line with shunt reactor. Thus, the damage caused by permanent fault reclosing to cables and impact to power systems is avoided. The combining criterion based on both above criterions can implement requirements of reclosure block in case of cable and permanent faults. Finally, EMTDC and RTDS simulation tests are established and implemented. The test results show that this method can effectively distinguish the fault location, and auto-reclosure can work properly as desired.关键词
线路保护/混合线路/自动重合闸/电抗继电器/并联电抗器/瞬时故障识别Key words
line protection/hybrid line/auto-recloser/reactance relay/shunt reactor/transient fault recognition分类
信息技术与安全科学引用本文复制引用
沈军,李超群,朱晓彤,李力,沈全荣,陈松林..高压电缆—架空线混合线路重合闸新判据[J].电力系统自动化,2012,36(13):97-100,4.
