Open AccessInstallation of Induced Current Measurement Systems in Substations and Analysis of GIC Data during Geomagnetic Storms
Author(s) -
Kyu-Cheol Choi,
Mi-Young Park,
Youngsoo Ryu,
Youngsu Hong,
Jong-Hyuk Yi,
Sung-Won Park,
JaeHun Kim
Publication year - 2015
Publication title -
journal of astronomy and space sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.273
H-Index - 11
eISSN - 2093-5587
pISSN - 2093-1409
DOI - 10.5140/jass.2015.32.4.427
Subject(s) - geomagnetic storm , earth's magnetic field , storm , meteorology , current (fluid) , geomagnetically induced current , environmental science , remote sensing , geology , physics , magnetic field , oceanography , quantum mechanics
Coronal Mass Ejections (CME), which originate from active regions of the Sun’s surface, e.g., sunspots, result in geomagnetic\udstorms on Earth. The variation of the Earth’s geomagnetic field during such storms induces surface currents that could cause\udbreakdowns in electricity power grids. Hence, it is essential to both monitor Geomagnetically Induced Currents (GICs) in\udreal time and analyze previous GIC data. In 2012, in order to monitor the variation of GICs, the Korean Space Weather Center\ud(KSWC) installed an induced current measurement system at SINGAPYEONG Substation, which is equipped with 765 kV\udextra-high-voltage transformers. Furthermore, in 2014, two induced current measurement systems were installed on the 345\udkV high-voltage transformers at the MIGEUM and SINPOCHEON substations. This paper reports the installation process of\udthe induced current measurement systems at these three substations. Furthermore, it presents the results of both an analysis\udperformed using GIC data measured at the SINGAPYEONG Substation during periods of geomagnetic storms from July 2013\udthrough April 2015 and the comparison between the obtained GIC data and magnetic field variation (dH/dt) data measured at\udthe Icheon geomagnetic observatory