Latitudinal Investigation on the Variation of Solar Wind Parameters towards Geomagnetically Induced Currents during 7–8 September 2017 Disturbed Period

Latiff, Zatul Iffah Abd; Anuar, N Mohd; Jusoh, Mohamad Huzaimy; Rahim, Siti Amalina Enche Ab

doi:10.1109/icsengt.2018.8606364

Cited by 3 publications

(6 citation statements)

References 12 publications

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“…According to maxwell faraday's law of induction (equation 3); any variation in the magnetic field leads to an induction of electric field. Multiple studies of GIC are made Based on Maxwell-Faraday's law of induction [5,9,10,14]. It is found that the magnetic horizontal component (H) is the most relevant component to predict GIC occurrence; therefore, calculating the rate of change of the magnetic H component with time (…”

Section: 𝑑𝐵 𝑑𝑡mentioning

confidence: 99%

“…) is a good indicator for GIC occurrence. In order to predict a probable GIC occurrence, the rate of change of magnetic field with time have to exceed 30 nT/min [5,14].…”

Section: 𝑑𝐻 𝑑𝑡mentioning

confidence: 99%

“…iv-Previous studies have shown that there is a strong correlation between GIC and the time derivative of the horizontal component (dH/dt). As a result, dH/dt can be utilized as a reliable indicator of GIC occurrence on Earth's surface with a lower threshold of 30 nT/min [5,14]. So, in order to estimate the probability of GIC occurrence the time derivative of the geomagnetic field horizontal component (dH/dt) is calculated using Eq.…”

Section: I-mentioning

confidence: 99%

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Case study of the Geomagnetically Induced Currents (GICs) along a hypothetical overhead Aluminum Conductor Steel Reinforced (ACSR) during active geomagnetic storms in Egypt

Omar,

Arafa-Hamed,

Kandoul

et al. 2023

Egypt. J. Physics

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O MANY studies are made on Geomagnetically Induced Currents (GICs) around the world. Most of these studies are made in polar and equatorial latitudes due to the high intensity of GICs observed there, which are enhanced by the auroral and equatorial electrojet currents during geomagnetic storms. In this study we are going to perform our analysis at the lower latitude specifically in Egypt at periods of maximum activity of solar cycle 24. Using magnetic field data from Misallat geomagnetic station we studied the variations in the magnetic field H component in Misallat (MLT) and compared them with other stations in lower latitudes upon data availability. In most of the studied storms the maximum ( 𝑑𝐻 𝑑𝑡 ) values coincide with the Storm Sudden Commencement (SSC), while some storms have their maximum ( 𝑑𝐻 𝑑𝑡 ) during the main phase of the storm. The maximum ( 𝑑𝐻 𝑑𝑡 ) at MLT among the whole studied period is found to be 59.4 nT/min on June 22 nd ,2015. Finally, GIC values are estimated along the ACSR conductors with their varying resistance values showing a maximum value of 423.6 (A.Km) along the 0.0949 (Ω/km) conductor and 21.4 (A.Km) along the 1.8769 (Ω/km) conductor.

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Section: 𝑑𝐵 𝑑𝑡mentioning

confidence: 99%

“…) is a good indicator for GIC occurrence. In order to predict a probable GIC occurrence, the rate of change of magnetic field with time have to exceed 30 nT/min [5,14].…”

Section: 𝑑𝐻 𝑑𝑡mentioning

confidence: 99%

Section: I-mentioning

confidence: 99%

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Case study of the Geomagnetically Induced Currents (GICs) along a hypothetical overhead Aluminum Conductor Steel Reinforced (ACSR) during active geomagnetic storms in Egypt

Omar,

Arafa-Hamed,

Kandoul

et al. 2023

Egypt. J. Physics

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“…During a sudden commencement (SC) with dH/dt exceeding 30 nT/min event, the station located at the low latitude region may also be affected by the GIC occurrence. In [26], the latitudinal effect during the variation of solar wind parameters towards the GIC was examined. Solar wind parameters, geomagnetic indices and horizontal components of the geomagnetic field were taken as inputs.…”

Section: Geomagnetic-induced Currentmentioning

confidence: 99%

“…Most of the studies were highlighting the high and middle latitude regions in which the power line are more prone to the solar disturbance. Meanwhile, only few studies focused at the low latitude region [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Review on solar disturbance studies and electric power transmission line fault in Malaysia

Alias

Homam

Noh

2020

IJEECS

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<span lang="EN-GB">This work is a review on previous research and studies on the solar disturbance activities and faults that occur on the electric power transmission line. Research has shown that low latitude regions could also be affected by solar disturbance events. The effects of these events on earth are considerable and may cause electric power transmission failure. Geomagnetically induced current is one of the ground impacts to the transmission line, which may cause fault or disturbance and consequently power system failure. Solar disturbance data from magnetometers and electric power transmission line fault data from a digital fault recorder are reviewed in this work. These data would be valuable in determining the characteristics and effects of solar disturbances on Malaysia’s electric power transmission lines.</span>

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Evaluation of Geomagnetic Induced Current on 275 kV Power Transformer for a Reliable and Sustainable Power System Operation in Malaysia

et al. 2020

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Geomagnetic induced current (GIC) occurs as a direct consequence of abnormal space weather which starts from the sun and may flow into a power system network through neutral grounding connections. The flow of GIC through grounded neutral power transformer has been a major concern to researchers since it can potentially affect power system equipment. Most of the previous research was focused on high and mid latitude countries only. However, it has been proven that the GIC is not only limited to high and mid latitudes, but also extends to power systems at lower geographic latitudes. This paper aims to investigate the impacts of GIC on selected 275 kV subpower system networks in Peninsular Malaysia, which is among the low latitude countries. Its impact in terms of magnitude and duration is also assessed together with the use of neutral earthing resistor (NER) as a potential blocking component to reduce the impact of GIC on the Malaysian power system network. Results demonstrated that when GIC exists in the power system, power transformers undergo half-cycle saturation that may lead to a reactive power loss and power system voltage instability. In this case, the power transformer can only withstand a maximum GIC value of 7 A, and beyond this value, if prolonged, may lead to voltage instability. It turned out that GIC magnitude had more impact compared to duration. However, long duration with high magnitude of GIC is the most hazardous to power transformers and could potentially cause major faults in the power system network. As part of mitigation, NER with a value of 315.10 Ω can be used to limit the GIC current flow and thus provide protection to the power system network. Clearly, the issue of GIC undoubtedly affects the reliability, security and sustainability of power system operation, especially networks with highly critical load and capacity and, therefore, thorough studies are required to assess and mitigate this issue.

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Latitudinal Investigation on the Variation of Solar Wind Parameters towards Geomagnetically Induced Currents during 7–8 September 2017 Disturbed Period

Cited by 3 publications

References 12 publications

Case study of the Geomagnetically Induced Currents (GICs) along a hypothetical overhead Aluminum Conductor Steel Reinforced (ACSR) during active geomagnetic storms in Egypt

Case study of the Geomagnetically Induced Currents (GICs) along a hypothetical overhead Aluminum Conductor Steel Reinforced (ACSR) during active geomagnetic storms in Egypt

Review on solar disturbance studies and electric power transmission line fault in Malaysia

Evaluation of Geomagnetic Induced Current on 275 kV Power Transformer for a Reliable and Sustainable Power System Operation in Malaysia

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