直流输电线路对地磁场Z分量观测干扰的校正
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摘要
为减小直流输电线路对地磁场观测的干扰,采用数学计算的方法精确求解了线路对地磁Z分量的干扰水平。以观测点为原点建立了地磁仪器观测点坐标系,推导了观测点坐标系各坐标轴在地心坐标系中的单位矢量表达式。根据空间矢量点积的定义,得到了空间电流磁场矢量投影到地磁Z分量方向的求解公式。利用推导的公式和直流线路电流磁场三维计算模型,最终求得直流线路对地磁Z分量观测的干扰水平。由此,开发了"直流线路对地磁观测干扰校正系统",并开展了地磁台站和野外联合地磁观测干扰实验。结果表明,直流线路和地磁观测台站距离不超过10km时,提出的数学模型和计算方法误差不超过5%。
In order to reduce the interference on geomagnetic field observation from DC power lines,the observation interference on Z component of geomagnetic field was solved accurately using mathematical calculation method.The geomagnetic observation point coordinate system with observation point as coordinate origin was constructed,and then the unit vector expression equations,which represented each axis of observation point coordinate system in geocentric coordinate system,were deduced.Based on the definition of space vector dot product and the three-dimensional current magnetic field calculation model of power lines,the calculation equation of space current magnetic field vector projected on the direction of Z component vector was acquired.Therefore,the "Interference on geomagnetic observation from DC power lines correction system" was developed.The geomagnetic field observation interference experiment was accomplished by station observation combined with field observation.The results showed that the error of proposed mathematical model and solution methods was less than 5%,while the distance between DC power line and geomagnetic observation station was no more than 10?km.
In order to reduce the interference on geomagnetic field observation from DC power lines,the observation interference on Z component of geomagnetic field was solved accurately using mathematical calculation method.The geomagnetic observation point coordinate system with observation point as coordinate origin was constructed,and then the unit vector expression equations,which represented each axis of observation point coordinate system in geocentric coordinate system,were deduced.Based on the definition of space vector dot product and the three-dimensional current magnetic field calculation model of power lines,the calculation equation of space current magnetic field vector projected on the direction of Z component vector was acquired.Therefore,the "Interference on geomagnetic observation from DC power lines correction system" was developed.The geomagnetic field observation interference experiment was accomplished by station observation combined with field observation.The results showed that the error of proposed mathematical model and solution methods was less than 5%,while the distance between DC power line and geomagnetic observation station was no more than 10?km.
引文
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[20]The Energy Standards Resources Center.Coordinateconversions and transformations including formulas(part2)-formulas for coordinate operations other than mapprojections[OL].http://www.globalsecurity.org/military/library/policy/army/fm/6-2/appe2.htm#tabe_22,2004.
[21]Tang Bo,Wen Yuanfang,Zhao Zhibin,et al.Computationmodel of the reradiation interference protecting distancebetween radio station and UHV power lines[J].IEEETransactions on Power Delivery,2011,26(2):1092-1100.
[22]唐波,文远芳,赵志斌,等.特高压角钢铁塔无源干扰计算的三维面模型[J].中国电机工程学报,2011,31(4):104-111.Tang Bo,Wen Yuanfang,Zhao Zhibin,et al.Three-dimensional surface computation model of thereradiation interference from UHV angle-steel tower[J].Proceedings of the CSEE,2011,31(4):104-111(inChinese).
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[24]中国地震局监测预报司.地震电磁数字观测技术[M].北京:地震出版社,2002:51-52.Monitoring and Prediction Department of ChinaEarthquake administration.digital observation technologyof seismic electromagnetic[M].Beijing:EarthquakePress,2002:51-52(in Chinese).
[2]Kappenman J G,Albertson V D.Bracing for thegeomagnetic storms[J].IEEE Spectrum,1990,27(3):27-33.
[3]Pirjola R.Geomagnetically induced currents duringmagnetic storms[J].IEEE Transactions on PlasmaScience,2000,28(6):1867-1873.
[4]Albertson V D,Thorson J M,Claylon R E,et al.Solarinduced currents in power system:cause and effects[J].IEEE Transactions on Power Apparatus and Systems,1973,92(2):471-477.
[5]Kappenman J G.Storm sudden commencement events andassociated geomagnetically induced current risks toground-based systems at low-latitude and midlatitudelocations[J].Space Weather,2003,1(3):1016-1022.
[6]Radasky W A,Kappenman J G.Impacts of geomagneticstorms on EHV and UHV power grids[C]//2010Asia-Pacific International Symposium on ElectromagneticCompatibility.Beijing,China:APEMC,2010:695-698.
[7]Trichtchenko L,Boteler D H.Effects of recentgeomagnetic storms on power systems[C]//7thInternational Symposium on ElectromagneticCompatibility and Electromagnetic Ecology.Saint-Petersburg,Russia:IEEE,2007:265-268.
[8]Trichtchenko L,Boteler D H.Response of power systemsto the temporal characteristics of geomagneticstorms[C]//2006 Canadian Conference on Electrical andComputer Engineering.Ottawa,Canada:CCECE,2006:390-393.
[9]Radasky W,Kappenman J,Gilbert J.An overview of thedevelopment and validation of large power grid modelsfor geomagnetic storms[C]//4th Asia-Pacific Conferenceon Environmental Electromagnetics.Dalian,China:CEEM,2006:25-28.
[10]能源部电力科学研究院.关于500kV线路环境影响的试验研究(电力线路对地震(磁)台站影响的试验研究)[R].北京:中国电力科学研究院,1989.Electric Power Research Institute of Energy Department.Experimental research of environmental impact from500 kV power line(experimental research on seismicstation from power lines)[R].Beijing:China ElectricPower Research Institute,1989(in Chinese).
[11]哈辉,邱鹏程,辛长江,等.格尔木地磁台观测环境测试与分析[J].地震地磁观测与研究,2003,24(5),76-81.Ha Hui,Qiu Pengcheng,Xin Changjiang,et al.Environmental test and analysis on geomagneticobservation in Geermu station[J].Seismological andGeomagnetic Observation and Research,2003,24(5),76-81(in Chinese).
[12]齐磊,崔翔,吴燕.交流输电线路对地震观测台站的最小距离研究[J].高电压技术,2010,36(3):649-656.Qi Lei,Cui Xiang,Wu Yan.Minimum distance betweenAC transmission line and seismic observation station[J].High Voltage Engineering,2010,36(3):649-656(inChinese).
[13]沈红会,周加新,张秀霞,等.直流输电对江苏地磁观测的影响分析[J].地震地磁观测与研究,2005,26(5):65-70.Shen Honghui,Zhou Jiaxin,Zhang Xiuxia,et al.Theinfluence analysis of direct current transmit electricity togeomagnetic observation[J].Seismological andGeomagnetic Observation and Research,2005,26(5):65-70(in Chinese).
[14]沈红会,张秀霞,冯志生,等.减小直流输电对地磁观测影响的几种办法[J].中国地震,2005,21(4),530-535.Shen Honghui,Zhang Xiuxia,Feng Zhisheng,et al.Thecountermeasures to the influence of direct currenttransmitting to geomagnetic observation[J].EarthquakeResearch in China,2005,21(4),530-535(in Chinese).
[15]郝长安,赵伦,倪友忠,等.葛洲坝-南桥直流输电线路对地磁台的影响[J].地震地磁观测与研究,2008,29(5),9-15.Hao Changan,Zhao Lun,Ni Youzhong,et al.Theinfluence of Gezhouba-Nanqiao’s direct currenttransmission line to geomagnetic observatory[J].Seismological and Geomagnetic Observation andResearch,2008,29(5),9-15(in Chinese).
[16]唐波,文远芳,刘红志,等.直流输电线路对地磁场观测的影响[J].高电压技术,2011,37(4),952-960.Tang Bo,Wen Yuanfang,Liu Hongzhi,et al.Influenceof DC transmission line on geomagnetic observation[J].High Voltage Engineering,2011,37(4),952-960(inChinese).
[17]Nurul S A H,Geri G,Ismail M,et al.The hurst exponentsof the geomagnetic horizontal component during quiet andactive periods[C]//International Conference on SpaceScience and Communication.Negeri Sembilan,Malaysia:IEEE,2009:186-190.
[18]胡聿贤.地震工程学[M].北京:地震出版社,2006:8-9.Hu Yuxian.Earthquake Engineering[M].Beijing:Earthquake Press,2006:8-9(in Chinese).
[19]唐波,文远芳,张小武,等.中短波段输电线路无源干扰防护间距求解的关键问题[J].中国电机工程学报,2011,31(19):129-137.Tang Bo,Wen Yuanfang,Zhang Xiaowu,et al.Keyproblems of solving reradiation interference protectingdistance between power transmission line and radiostation at MF and SF[J].Proceedings of the CSEE,2011,31(19),129-137(in Chinese).
[20]The Energy Standards Resources Center.Coordinateconversions and transformations including formulas(part2)-formulas for coordinate operations other than mapprojections[OL].http://www.globalsecurity.org/military/library/policy/army/fm/6-2/appe2.htm#tabe_22,2004.
[21]Tang Bo,Wen Yuanfang,Zhao Zhibin,et al.Computationmodel of the reradiation interference protecting distancebetween radio station and UHV power lines[J].IEEETransactions on Power Delivery,2011,26(2):1092-1100.
[22]唐波,文远芳,赵志斌,等.特高压角钢铁塔无源干扰计算的三维面模型[J].中国电机工程学报,2011,31(4):104-111.Tang Bo,Wen Yuanfang,Zhao Zhibin,et al.Three-dimensional surface computation model of thereradiation interference from UHV angle-steel tower[J].Proceedings of the CSEE,2011,31(4):104-111(inChinese).
[23]于寅.高等工程数学[M].武汉:华中科技大学出版社,2005:47-48.Yu Yin.Advanced engineering mathematics[M].Wuhan:Huazhong University of Technology&Science Press,2005:47-48(in Chinese).
[24]中国地震局监测预报司.地震电磁数字观测技术[M].北京:地震出版社,2002:51-52.Monitoring and Prediction Department of ChinaEarthquake administration.digital observation technologyof seismic electromagnetic[M].Beijing:EarthquakePress,2002:51-52(in Chinese).
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