大地电导率横向变化对地磁暴感应电场H极化及地磁感应电流的影响

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Abstract During magnetic storms, the induced geoelectric fields drive geomagnetically induced currents (GIC) in power transmission networks, railway systems and pipelines, resulting in negative effects on those systems. In the region with complex geological structure, such as coast area, the lateral change of earth conductivity will cause distortion in the distribution of induced geoelectric field. The coast effect is a typical distortion of geoelectric field in the “H polarization” case and it has obvious impacts on GIC. This paper simulated the influence of the “H polarization” on the earth electric field due to magnetic storm. After establishing the earth model with lateral conductivity change, this paper used the finite element method to solve the boundary problem of the induced telluric current field. Thus, the relationship between conductivity lateral change and electric field distortion was discussed based on the numerical results. Additionally, this paper also discussed the variation of GIC in the power grid due to the lateral conductivity change and the distance between substation and the conductivity interface. The method and the results lay a theoretical foundation for the accurate calculation of GIC in the power grid.

Key words： Geomagnetic disturbance, coast effect, geomagnetically induced current, finite element method

Received: 30 September 2015 Published: 03 January 2017

PACS:

TM154.1

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	Liu Chunming
	Lin Chenxiang
	Wang Xuan
	Liu Lianguang
	Huang Caichen

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Liu Chunming,Lin Chenxiang,Wang Xuan等. Evaluating the Influence of Lateral Change of Conductivity on the “H Polarization” of Induced Geoelectric Field and Geomagnetically Induced Currents[J]. Transactions of China Electrotechnical Society, 2016, 31(24): 113-119.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I24/113

[1] Pirjola R. Geomagnetically induced currents during magnetic storms[J]. IEEE Transactions on Plasma Science, 2000, 28(6): 1867-1873.
[2] 董博, 王泽忠, 刘连光, 等. 大地电导率横向突变处磁暴感应地电场的邻近效应[J]. 地球物理学报, 2015, 58(1): 238-246.
Dong Bo, Wang Zezhong, Liu Lianguang, et al. The proximity effect on the induced geoelectric field at the interface of different conductivity structures with lateralveriations during the geomagnetics storms[J]. Chinese Journal of Geophysics, 2015, 58(1): 238- 246.
[3] Liu C M, Liu L G, Pirjola R. Geomagnetically induced currents in the high-voltage power grid in China[J]. IEEE Transactions on Power Delivery, 2009, 24(4): 2368-2374.
[4] 刘连光, 王开让, 赵春红, 等. 太阳风暴对电网干扰的日面参数与条件[J]. 电工技术学报, 2013, 28(增2): 360-366.
Liu Lianguang, Wang Kairang, Zhao Chunhong, et al. Solar storm heliographic parameters and conditions driving the GIC in grid[J]. Transactions of China Electrotechnical Society, 2013, 28(S2): 360-366.
[5] Pirjola R. Practical model applicable to investigating the coast effect on the geoelectric field in connection with studies of geomagnetically induced currents[J]. Advances in Applied Physics, 2013, 1(1): 9-28.
[6] Parkinson W D, Jones F W. The geomagnetic coast effect[J]. Reviews of Geophysics, 1979, 17(8): 1999- 2015.
[7] 张帆, 魏文博, 金胜, 等. 海岸效应对近海地区大地电磁测深数据畸变作用研究[J]. 地球物理学报, 2012, 55(12): 4023-4035.
Zhang Fan, Wei Wenbo, Jin Sheng, et al. Ocean coast effect on land-side magnetotelluric data in the vicinity of coast[J]. Chinese Journal of Geophysics, 2012, 55(12): 4023-4035.
[8] Zheng K, Pirjola R J, Boteler D H, et al. Geoelectric fields due to small-scale and large-scale source currents[J]. IEEE Transactions on Power Delivery, 2013, 28(1): 442-449.
[9] 杨永明, 刘行谋, 陈涛, 等. 特高压直流输电接地极附近的土壤结构对变压器直流偏磁的影响[J]. 电网技术, 2012, 36(7): 26-32.
Yang Yongming, Liu Xingmou, Chen Tao, et al. Impact of soil structure adjacent to ground electrodes of UHVDC power transmission lines on DC bias of power transformers[J]. Power System Technology, 2012, 36(7): 26-32.
[10] Viljanen A, Pulkkinen A, Amm O, et al. Fast computation of the geoelectric field using the method of elementary current systems and planar Earth models[J]. Annales Geophysicae, 2004, 22(1): 101- 113.
[11] Gilbert J L. Modeling the effect of the ocean-land interface on induced electric fields during geomag- netic storms[J]. Space Weather, 2005, 3(4): 211.
[12] Boteler D H. Geomagnetically induced currents: present knowledge and future research[J]. IEEE Transactions on Power Delivery, 1994, 9(1): 50-58.
[13] Dong B, Danskin D W, Pirjola R J, et al. Evaluating the applicability of the finite element method for modelling of geoelectric fields[J]. Annales Geophy- sicae, 2013, 31(10): 1689-1698.
[14] Chunming L, Lianguang L, Pirjola R. Calculation of GIC in mid-low-latitude power grids based on the plane wave method: a preliminary case study[J]. Space Weather, 2009, 7(5): 9-14.
[15] 刘连光, 刘春明, 张冰, 等. 中国广东电网的几次强磁暴影响事件[J]. 地球物理学报, 2008, 51(4): 976-981.
Liu Lianguang, Liu Chunming, Zhang Bing, et al. Strong magnetic storm's influence on China's Guangdong power grid[J]. Chinese Journal of Geophysics, 2008, 51(4): 976-981.
[16] 王泽忠, 董博, 刘春明, 等. 地磁暴感应地电场的大地电性结构建模方法[J]. 科学技术与工程, 2015, 15(13): 72-76.
Wang Zezhong, Dong Bo, Liu Chunming, et al. Earth conductivity modelling technique for calculation geoelectric field during geomagnetic storms[J]. Science Technology and Engineering, 2015, 15(13): 72-76.
[17] 王泽忠, 董博, 刘春明, 等. 华北地区大地电性结构三维建模及磁暴感应地电场有限元计算[J]. 电工技术学报, 2015, 30(3): 61-66.
Wang Zezhong, Dong Bo, Liu Chunming, et al. Three-dimensional earth conductivity structure mode- lling in North China and calculation of geoelectro- magnetic fields during geomagnetic disturbances based on finite element method[J]. Transactions of China Electrotechnical Society, 2015, 30(3): 61-66.
[18] 王泽忠, 李世琼. 论电磁场媒质分界面衔接条件[J]. 电工技术学报, 2013, 28(2): 60-66.
Wang Zezhong, Li Shiqiong. Discussion of the electromagnetic interface conditions[J]. Transactions of China Electrotechnical Society, 2013, 28(2): 60- 66.
[19] 刘连光, 吴伟丽. 磁暴影响电力系统安全风险评估思路与理论框架[J]. 中国电机工程学报, 2014, 34(10): 1583-1591.
Liu Lianguang, Wu Weili. Security risk assessment ideas and theoretical framework for power system considering geomagnetic strom[J]. Proceedings of the CSEE, 2014, 34(10): 1583-1591.