地磁感应电流对电网安全稳定运行的影响.pdfVIP

第 34 卷 第 11 期 电 网 技 术 Vol. 34 No. 11 2010 年 11 月 Power System Technology Nov. 2010 文章编号：1000-3673 （2010 ）11-0024-07 中图分类号：TM 71 文献标志码：A 学科代码：470·4054 地磁感应电流对电网安全稳定运行的影响 文俊，刘连光，项颂，马雪玲，李伟霞 （华北电力大学电气与电子工程学院，北京市 昌平区 102206 ） Influences of Geomagnetic Induced Currents on Security and Stability of Power Systems WEN Jun, LIU Lianguang, XIANG Song, MA Xueling, LI Weixia (School of Electrical Electronic Engineering, North China Electric Power University, Changping District, Beijing 102206, China) ABSTRACT: The solar wind arising from the eruption of 全稳定运行构成威胁。详细分析了不同类型高压直流输电 abnormal movement of solar sunspots makes earth surface GIC 存在的可能性，指出长距离高压直流输电只有在 2 种运 potential (ESP) abnormal and the peak values of geomagnetic 行方式下，直流线路中才会出现 GIC ；正常运行时，该直流 induced currents (GIC) in transmission lines, which are GIC 不会危及直流输电的运行。最后提出了开展 GIC 对交 induced by abnormal ESP and possess quasi-DC characteristic, 直流系统安全稳定运行研究工作的建议。 are much higher than the allowable DC currents sustained by 关键词：地磁感应电流；地面电势；地磁暴；直流偏磁；准 power transformers. This phenomena cause sequent damages of 直流；高压直流输电；换流变压器 power equipments in power systems home and abroad as well as collapse of power systems. The producing mechanism of 0 引言 GIC and the reason leading to DC bias in transformer due to GIC are analyzed. It is pointed out that GIC could give the 地球磁场在受到来自太阳黑子剧烈活动形成 danger to power equipments as well as to secure and stable 的太阳风作