文献类型：期刊文献

中文题名：550kV离相气体绝缘组合电器电磁环流建模计算与发热消缺措施

英文题名：Electromagnetic Circulation Current Calculation and Heating Defect Elimination Method for 550 kV Monophasic GIS

作者：李伟 李山 公多虎 王建 朴文泉 罗文华

第一作者：李伟

通信作者：Li, Wei

机构：[1]贵州理工学院电气工程学院;[2]国网新疆电力公司电力科学研究院

第一机构：贵州理工学院电气与信息工程学院

年份：2016

卷号：42

期号：10

起止页码：3289-3294

中文期刊名：高电压技术

外文期刊名：High Voltage Engineering

收录：CSTPCD;;EI(收录号：20164302952555);Scopus(收录号：2-s2.0-84992109452);北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家电网公司科技项目(5230DK1302RD)~~

语种：中文

中文关键词：发热故障;极度不平衡;GIS可拆卸单元;设备故障;电磁环流;负荷转移

外文关键词：heating defect; extreme unbalance; GIS removable unit; equipment fault; electromagnetic circulation current; load displacement

摘要：针对离相气体绝缘组合电器(GIS)壳侧发热故障导致系统负荷电流极度不平衡问题,建立离相GIS壳侧电磁环流计算模型,研究了GIS壳侧设备发热故障引发负荷电流不平衡的内在联系,并正确制定设备消缺措施。模拟设备发热故障,分析GIS壳侧发热对电磁环流及负荷电流的直接影响。结果表明,采用电磁环流模型能准确验证GIS壳侧实测环流及确定负荷电流不平衡的主要原因;采取负荷转移策略可以在保证系统输送功率不受影响的前提下及时消除设备故障并解决系统负荷电流极度不平衡问题,使得发热温度从253℃降低到29.4℃,最大不平衡负荷电流从107.2 A降到20 A以下。
To solve the system load currents extreme unbalance problem resulted from the heating defect on the monophasic GIS enclosure, we established an electromagnetic circulation current（ECC） calculation model of monophasic GIS to find the internal relationship of load currents unbalance excited by the defects in GIS enclosure and to correctly devise the defect elimination ways. Moreover, the heating fault of equipment was simulated to analyze the direct influence on ECC and load current. The results show that, the calculation value of ECC model can validate the actual current on site in GIS enclosure and make sure that load current unbalance is involved with the defect in GIS enclosure. The load displacement strategy can be employed to timely eliminate the GIS fault and effectively solve extreme load current unbalance problem on the premise that the system power is not influenced at all, and the heating temperature can be reduced from 253 ℃ to 29.4 ℃ while the maximum unbalance load current can be reduced from 107.2 A to under 20 A.