地磁感应电流的建模仿真及其防治措施
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
基于WGS84坐标系统建立了地磁感应电流(GIC)的计算模型,在此基础上通过MATLAB-SIMULINK仿真软件搭建出含有GIC的电网模型。基于变压器的磁化曲线和铁芯饱和特性,研究了GIC作用下的变压器直流偏磁现象。通过对励磁电流、变压器磁链、线路电流的正常情况及GIC侵扰情况下的对比分析,结果表明,GIC作用下的变压器会发生直流偏磁,产生各次谐波,使线路电流发生一定程度的畸变。最后介绍了GIC对电网的主要影响,并从空间天气预警、变压器设计、电网规划3个方面阐述了GIC的防治措施。
In this paper,a calculation model of GIC based on the WGS84 coordinate system,is established. On this basis,the power grid model of a power grid containing GIC is built with MATLAB-SIMULINK. Based on magnetization characteristic curve and core saturation characteristic,the paper studies the DC biasing magnetism phenomenon of the transformer under the effect of GIC. Through the comparative analysis of excitation current,transformer flux linkage and transmission line current under both the normal and GIC flowing conditions,it is suggested that the transformer under the effect of GIC has DC biasing magnetism, producing various harmonics to cause a certain degree of distortion of the line current. Finally,the main effects of GIC on the power grid are presented and mitigation strategies for prevention of GIC are expounded in terms of space weather warning,transformer design and power system planning.
引文
[1]高玉芬.强烈地磁扰动的危害[J].国际地震动态,2005(11):6-9.GAO Yufen.Hazards of severe geomagnetic disturbances[J].Recent Developments in World Seismology,2005(11):6-9(in Chinese).
    [2]张浩,高乃天,刘连光.地磁感应电流对我国电网影响及监测技术的研究[J].电力设备,2005,6(6):27-30.ZHANG Hao,GAO Naitian,LIU Lianguang.Study on influence of geomagnetism induction current on China’s power network and its monitoring technology[J].Electrical Equipment,2005,6(6):27-30(in Chinese).
    [3]GIRGIS R,VEDANTE K.Effects of GIC on power transformers and power systems[C]//Transmission and Distribution Conference and Exposition(T&D),2012 IEEE PES.IEEE,2012:1-8.
    [4]文俊,刘连光,项颂,等.地磁感应电流对电网安全稳定运行的影响[J].电网技术,2010,34(11):24-30.WEN Jun,LIU Lianguang,XIANG Song,et al.Influences of geomagnetic induced currents on security and stability of power systems[J].Power System Technology,2010,34(11):24-30(in Chinese).
    [5]王开让,林隽,刘连光,等.由对地全晕状日冕物质抛射诱发的地磁感应电流统计研究[J].天文学报,2012,53(1):9-27.WANG Kairang,LIN Jun,LIU Lianguang,et al.Statistical studies on geomagnetically induced current events driven by earth-directed full halo coronal mass ejections[J].Acta Astronomica Sinica,2012,53(1):9-27(in Chinese).
    [6]汤昕.农网10 k V配电变压器的防雷改进措施研究[J].电瓷避雷器,2011(2):53-56.TANG Xin.Study of lightning protection improving measures of 10 k V distribution transformer in rural power grid[J].Insulators and Surge Arresters,2011(2):53-56(in Chinese).
    [7]徐鹏,李世元,甘鹏,等.雷击配电变压器事故分析及防雷措施研究[J].电瓷避雷器,2011(4):57-62.XU Peng,LI Shiyuan,GAN Peng,et al.Analysis of lightning-strike fault of distribution transformer and study on lightning protection measures[J].Insulators and Surge Arresters,2011(4):57-62(in Chinese).
    [8]张燕秉,刘连光,张清明,等.基于PSCAD/EMTDC的电网GIC影响仿真分析[J].华北电力技术,2004(6):10-13.ZHANG Yanbing,LIU Lianguang,ZHANG Qingming,et al.Simulation analysis on GIC effect on power grids based on PSCAD/EMTDC[J].North China Electric Power,2004(6):10-13(in Chinese).
    [9]张洪兰,彭晨光,刘连光.GIC作用下的变压器励磁电流及无功功率特性[J].电网与清洁能源,2010(2):13-17.ZHANG Honglan,PENG Chenguang,LIU Lianguang.Characteristics of transformer magnetic-current and reactive power consumption under GIC[J].Power System and Clean Energy,2010(2):13-17(in Chinese).
    [10]马雪玲,文俊,刘连光.GIC作用下换流变压器饱和特性的仿真研究[J].陕西电力,2010,38(8):7-11.MA Xueling,WEN Jun,LIU Lianguang.Simulation Research on saturation characteristics of converter transformer due to GIC[J].Shaanxi Electric Power,2010,38(8):7-11(in Chinese).
    [11]刘春明,孙贝贝,宋祺鹏.磁暴引发电网地磁感应电流计算模型研究[J].陕西电力,2010,38(7):1-5.LIU Chunming,SUN Beibei,SONG Qipeng.Study on calculation models of geomagnetic induced current in power grid resulted from magnetic storms[J].Shaanxi Electric Power,2010,38(7):1-5(in Chinese).
    [12]刘连光,刘春明,张冰.磁暴对我国特高压电网的影响研究[J].电网技术,2009,33(11):1-5.LIU Lianguang,LIU Chunming,ZHANG Bing.Effects of geomagnetic storm on UHV power grids in China[J].Power System Technology,2009,33(11):1-5(in Chinese).
    [13]HORTON R,BOTELER D H,OVERBYE T J,et al.A test case for the calculation of geomagnetically induced currents[J].IEEE Transactions on Power Delivery,2012,27(4):2368-2373.
    [14]孙树敏,程艳,杨帆,等.不同纬度电网地磁感应电流水平的比较研究[J].电网与清洁能源,2013,29(1):50-53.SUN Shumin,CHENG Yan,YANG Fan,et al.Comparison study of the geomagnetically induced current level of power grid in different latitudes[J].Power System and Clean Energy,2013,29(1):50-53(in Chinese).

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心