Study on Variation Rate Characters of Mid-to-Low Latitude Area Geomagnetic Field during Geomagnetic Storms

2013 ◽  
Vol 448-453 ◽  
pp. 2125-2131
Author(s):  
Xiao Mao Wang
Keyword(s):  
Geomagnetic Field ◽  
Geomagnetic Storms ◽  
Power Grid ◽  
Geomagnetic Latitude ◽  
Induced Current ◽  
Low Latitude ◽  
Geomagnetically Induced Current ◽  
Faraday’S Law ◽  
Variation Rate ◽  
Measurement And Control

Geomagnetic field changes acutely during geomagnetic storms. According to Faraday's law of electromagnetic induction, the change of the geomagnetic field produces geomagnetically induced current (GIC) in power grid, which directly damages the power equipment and threatens safe operation of power grid. The more dramatically geomagnetic field changes, the bigger geomagnetically induced current in power grid becomes, and thus, the greater harm it brings to power grid. In this paper, based on the H and D components of recent geomagnetic storm data measured by several mid-to-low latitude geomagnetic observatories, the variation law of the amplitude of north-south and east-west geomagnetic component change rate (dX/dt and dY/dt) pulse with geomagnetic latitude was analyzed when geomagnetic field changed very severely. Finally, the possibilities of power grid in different direction affected by GIC with the change of latitude were discussed. The analysis results will contribute to the evaluation, measurement and control of GIC in Chinese current and future power grid.

Comparison Study of the Geomagnetically Induced Current Level of Power Grid in Different Latitude

2012 ◽  
Vol 463-464 ◽  
pp. 305-309
Author(s):  
Fan Yang ◽  
Lian Guang Liu ◽  
Qi Li ◽  
Dong Mei Yang
Keyword(s):  
Power Grid ◽  
Current Level ◽  
Measure Data ◽  
Induced Current ◽  
Comparison Study ◽  
Electrical Parameters ◽  
Low Latitude ◽  
Geomagnetically Induced Current ◽  
Grid Topology ◽  
Magnetic Amplitude

Geomagnetically induced current (GIC) relates to factors such as magnetic amplitude, geotecture and structure of power grid. On the basis of geotecture, according to the geomagnetic storm data of Dec 2006, employing the plan wave method, this paper finish the calculation of GIC level of 2012 Beijing planning power gird, and compare the result to the measure data of Shanghe substation, in Yanghuai transmission system. The comparison shows that power grid is much more affected by geotecture, direction and length of transmission line, grid topology and electrical parameters in mid-low latitude area

scholarly journals Measurement of geomagnetically induced current (GIC) around Tokyo, Japan

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Shinichi Watari ◽  
Satoko Nakamura ◽  
Yusuke Ebihara
Keyword(s):  
Solar Flare ◽  
Geomagnetic Storms ◽  
Power Grids ◽  
Geomagnetic Variation ◽  
Induced Current ◽  
Interplanetary Shocks ◽  
Geomagnetic Disturbances ◽  
Geomagnetically Induced Current ◽  
Middle Latitudes ◽  
Sudden Commencements

AbstractWe need a typical method of directly measuring geomagnetically induced current (GIC) to compare data for estimating a potential risk of power grids caused by GIC. Here, we overview GIC measurement systems that have appeared in published papers, note necessary requirements, report on our equipment, and show several examples of our measurements in substations around Tokyo, Japan. Although they are located at middle latitudes, GICs associated with various geomagnetic disturbances are observed, such as storm sudden commencements (SSCs) or sudden impulses (SIs) caused by interplanetary shocks, geomagnetic storms including a storm caused by abrupt southward turning of strong interplanetary magnetic field (IMF) associated with a magnetic cloud, bay disturbances caused by high-latitude aurora activities, and geomagnetic variation caused by a solar flare called the solar flare effect (SFE). All these results suggest that GIC at middle latitudes is sensitive to the magnetospheric current (the magnetopause current, the ring current, and the field-aligned current) and also the ionospheric current.

scholarly journals Long-term geomagnetically induced current observations in New Zealand: Earth return corrections and geomagnetic field driver

Space Weather ◽  
2017 ◽  
Vol 15 (8) ◽  
pp. 1020-1038 ◽  
Author(s):  
Daniel H. Mac Manus ◽  
Craig J. Rodger ◽  
Michael Dalzell ◽  
Alan W. P. Thomson ◽  
Mark A. Clilverd ◽  
...  
Keyword(s):  
New Zealand ◽  
Geomagnetic Field ◽  
Induced Current ◽  
Geomagnetically Induced Current

scholarly journals Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid

Space Weather ◽  
2021 ◽  
Author(s):  
Han Wang ◽  
Zan‐Yang Xing ◽  
Nanan Balan ◽  
Yan‐Ling Wang ◽  
Qing‐He Zhang ◽  
...  
Keyword(s):  
Power Grid ◽  
Induced Current ◽  
Geomagnetically Induced Current

scholarly journals Long-Term Geomagnetically Induced Current Observations From New Zealand: Peak Current Estimates for Extreme Geomagnetic Storms

Space Weather ◽  
2017 ◽  
Vol 15 (11) ◽  
pp. 1447-1460 ◽  
Author(s):  
Craig J. Rodger ◽  
Daniel H. Mac Manus ◽  
Michael Dalzell ◽  
Alan W. P. Thomson ◽  
Ellen Clarke ◽  
...  
Keyword(s):  
New Zealand ◽  
Geomagnetic Storms ◽  
Induced Current ◽  
Geomagnetically Induced Current ◽  
Peak Current

scholarly journals A statistical analysis of the relationship between Pc4 and Pc5 ULF waves, solar winds and geomagnetic storms for predicting earthquake precursor signatures in low latitude regions

2021 ◽  
Vol 880 (1) ◽  
pp. 012010
Author(s):  
S N A Syed Zafar ◽  
Roslan Umar ◽  
N H Sabri ◽  
M H Jusoh ◽  
A Yoshikawa ◽  
...  
Keyword(s):  
Solar Wind ◽  
Geomagnetic Field ◽  
Geomagnetic Storms ◽  
Earthquake Precursor ◽  
Ulf Waves ◽  
Low Latitude ◽  
Geomagnetic Indices ◽  
Solar Winds ◽  
Solar Wind Parameters ◽  
The Relationship

Abstract Short-term earthquake forecasting is impossible due to the seismometer’s limited sensitivity in detecting the generation of micro-fractures prior to an earthquake. Therefore, there is a strong desire for a non-seismological approach, and one of the most established methods is geomagnetic disturbance observation. Previous research shows that disturbances in the ground geomagnetic field serves as a potential precursor for earthquake studies. It was discovered that electromagnetic waves (EM) in the Ultra-Low Frequency (ULF) range are a promising tool for studying the seismomagnetic effect of earthquake precursors. This study used a multiple regression approach to analyse the preliminary study on the relationship between Pc4 (6.7-22 mHz) and Pc5 (1.7-6.7 mHz) ULF magnetic pulsations, solar wind parameters and geomagnetic indices for predicting earthquake precursor signatures in low latitude regions. The ground geomagnetic field was collected from Davao station (7.00° N, 125.40° E), in the Philippines, which experiences nearby earthquake events (Magnitude <5.0, depth <100 km and epicentre distance from magnetometer station <100 km). The Pc5 ULF waves show the highest variance with four solar wind parameters, namely SWS, SWP, IMF-Bz, SIE and geomagnetic indices (SYM/H) prior to an earthquake event based on the regression model value of R2 = 0.1510. Furthermore, the IMF-Bz, SWS, SWP, SWE, and SYM/H were found to be significantly correlated with Pc5 ULF geomagnetic pulsation. This Pc5 ULF magnetic pulsation behaviour in solar winds and geomagnetic storms establishes the possibility of using Pc5 to predict earthquakes.

scholarly journals Correction to “Measurements of geomagnetically induced current in a power grid in Hokkaido, Japan”

Space Weather ◽  
2009 ◽  
Vol 7 (5) ◽  
pp. n/a-n/a ◽  
Author(s):  
S. Watari ◽  
M. Kunitake ◽  
K. Kitamura ◽  
T. Hori ◽  
T. Kikuchi ◽  
...  
Keyword(s):  
Power Grid ◽  
Induced Current ◽  
Geomagnetically Induced Current

Spectral characteristic of geomagnetically induced current during geomagnetic storms by wavelet techniques

2019 ◽  
Vol 192 ◽  
pp. 104777 ◽  
Author(s):  
Binod Adhikari ◽  
Nirakar Sapkota ◽  
Subodh Dahal ◽  
Binod Bhattarai ◽  
Krishna Khanal ◽  
...  
Keyword(s):  
Spectral Characteristic ◽  
Geomagnetic Storms ◽  
Induced Current ◽  
Geomagnetically Induced Current ◽  
Wavelet Techniques
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