王辉^1,2,,
马方圆^2,,,
程久龙^1,2,
朱国维^1,2,
罗景程²,
姚郁松²,
常威明²
1. 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室, 北京 100083
2. 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083

基金项目: 国家自然科学基金青年基金项目（41604064），中国矿业大学（北京）煤炭资源与安全开采国家重点实验室开发课题（SKLCRSM16KFA05），国家重点研发计划重点专项（2017YFC0804105），中国矿业大学（北京）中央高校基本科研业务费（2020YQDC03）资助


详细信息

作者简介: 王辉, 男, 1987年生, 讲师, 主要从事电磁法数据采集、处理、正反演及地球电磁场的研究.E-mail:wanghui@cumtb.edu.cn

通讯作者: 马方圆, 男, 1996年生, 硕士研究生, 主要从事地球电磁学研究.E-mail:mafangyuan@student.cumtb.edu.cn

中图分类号: P318

收稿日期:2019-07-02
修回日期:2019-12-23
上线日期:2020-07-05

Synthesizing geomagnetic induction electric field (GIE) using magnetotelluric quasi-impedance and geomagnetic field

WANG Hui^1,2,,
MA FangYuan^2,,,
CHENG JiuLong^1,2,
ZHU GuoWei^1,2,
LUO JingCheng²,
YAO YuSong²,
CHANG WeiMing²
1. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China
2. College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China


More Information

Corresponding author: MA FangYuan,E-mail:mafangyuan@student.cumtb.edu.cn

MSC: P318

--> Received Date: 02 July 2019
Revised Date: 23 December 2019
Available Online: 05 July 2020


摘要
摘要:由磁暴引起的地下感应电场（geomagnetic induction electric field，GIE）会影响电网的安全稳定运行，GIE的大小取决于磁暴时磁场的变化率和周围地下介质的电性结构.本文利用在地表观测的磁场与电场数据，首先求得频率域实际地下三维大地电磁站间阻抗，再结合磁暴时段的磁场数据，计算GIE的频谱，最后通过傅里叶反变换，得到GIE时间序列.本文以日本地区三个长期观测的电磁电台站为例，讨论了站间阻抗的长期稳定性，并选取一次典型的磁暴事件，对本文方法进行了验证.结果表明，合成的GIE与实测数据基本一致，说明利用大地电磁站间阻抗，结合地磁台站数据，可以高精度合成GIE.本文方法有助于定量评价磁暴发生时产生的GIE对电网可能造成的破坏作用.
关键词: 磁暴/
GIE/
大地电磁/
站间阻抗

Abstract:The geomagnetic induction electric field (GIE) is induced by the magnetic storm,and has an big impact on the safe and stable operation of the power grid system. GIE depends on the variation of magnetic field during the magnetic storm and the electrical structure of underground. In this paper,firstly,we estimate the three-dimensional magnetotelluric (MT) quasi-impedance in the frequency domain by using magnetic and electric field data. Then,the spectrum of electric field is obtained by multiplying quasi-impedance with magnetic spectrum from magnetic storm time series. Finally,the GIE time series are synthesized by inversed Fourier transform. Three electromagnetic observatories in Japan,which continuously record the geomagnetic and geoelectric data from 2001 to 2009, were illustrated as an example to show the temporal variation of the quasi-impedance and the advantages of our proposed method. And,the Halloween storm event is selected to verify our approach of predicting GIE. The results show that predicted GIE is consistent with the measured data,and confirm that MT quasi-impedance can used to synthesize GIE with high precision by combining with geomagnetic data. The proposed method can be used to evaluate the possible damage to the power grid caused by GIE.
Key words:Magnetic storm/
GIE/
Magnetotelluric/
Quasi-impedance



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