Analysis of geomagnetically induced current in transformer

Patel, Jay; Mehta, R.S.; Rathod, S.B.; Patel, Krishna; Rajput, Vipul N.; Pandya, Kartik S.

doi:10.1109/iceeot.2016.7755446

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Figure 2 shows a core of a single-phase two wind in transformer with a magnetic circuit. The transformer consists of two windings and a metallic core on which the windings are wound [17]. The winding coils acts as an inductor and when an alternating current is allowed to flow through any of the windings, there will be an alternating flux produced surrounding the winding.…”

Section: Gic Phenomenonmentioning

confidence: 99%

The Impact of Geomagnetically Induced Current on Single-Phase Saturable Transformer

Zawawi¹,

Aziz²,

Kadir³

et al. 2019

IJRTE

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Changing of magnetic fields can cause electrical currents, known as geomagnetic ally induced currents that caused by solar storm. This current can affect power system especially power transformer as it can generate quasi direct current through the neutral of the transformer. Previous studies have shown that the risk is not just limited to high and midlatitude locations, but extends to power grids at lower geographic latitude as well. This paper presents the simulation of GICs using a single-phase saturable transformer under steady state and operation with GIC in MATLAB SIMULINK. The simulation results illustrate that when transformers are under influence of GIC, magnitude off lux and magnetizing current are increase with in time and distort the core of hysteresis curve. It indicates that GICs generated by solar storms can saturate the transformer, cause other effects such as transformer heating and creating large amount of harmonics. The findings have proven that GIC is a threat to the power transformer and can damage power system network.

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Section: Gic Phenomenonmentioning

confidence: 99%

The Impact of Geomagnetically Induced Current on Single-Phase Saturable Transformer

Zawawi¹,

Aziz²,

Kadir³

et al. 2019

IJRTE

View full text Add to dashboard Cite

show abstract

“…The above research treats the commutation voltage as a fundamental wave. However, the accuracy of the above methods will be affected under certain faults, for the rapid rise of the DC current will cause transformer saturation, leading to the distortion of commutation voltage [15].…”

Section: Introductionmentioning

confidence: 99%

Commutation Failure Prediction Method Considering Commutation Voltage Distortion and DC Current Variation

Wang

Zhang

et al. 2019

IEEE Access

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Commutation failure (CF) at the inverter side is one of the most common failures in the linecommutated converter-based high voltage direct current (LCC-HVDC) system. Effective prediction of CF helps to formulate and implement protection measures timely. Since abnormal commutation voltage and DC current are the main reasons causing CF, these two factors should be fully considered in CF prediction. In this paper, to consider the effect of commutation voltage distortion, the time-domain response of the commutation voltage Fourier coefficient is deduced based on the first-order circuit response. To consider the effect of DC current variation, the time-domain response of the DC current is derived by superimposing its steadystate component and transient component, respectively. Based on these two predictive value, the extinction angle (EA) during the commutation is calculated according to the commutation voltage-time area, and the criterion based on EA is proposed to predict the occurrence of CF. The simulation results of the test system built in the PSCAD/EMTDC demonstrate the effectiveness and validity of this method.

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Investigation of the Influence of AEC of Synchronous Generators on the Functioning of the Block "Synchronous Generator - Power Transformer" under the Influence of Quasi-Direct Currents

Fedyai

Bychkov

Vakhnina

2023

2023 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM)

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Analysis of geomagnetically induced current in transformer

Cited by 5 publications

References 12 publications

The Impact of Geomagnetically Induced Current on Single-Phase Saturable Transformer

The Impact of Geomagnetically Induced Current on Single-Phase Saturable Transformer

Commutation Failure Prediction Method Considering Commutation Voltage Distortion and DC Current Variation

Investigation of the Influence of AEC of Synchronous Generators on the Functioning of the Block "Synchronous Generator - Power Transformer" under the Influence of Quasi-Direct Currents

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