Modeling the impact of GIC neutral blocking devices on distance protection relay operations for transmission lines
Sign Up to like & getrecommendations! Published in 2020 at "Electric Power Systems Research"
DOI: 10.1016/j.epsr.2019.106135
Abstract: Abstract Geomagnetic Induced Current (GIC) blocking devices typically include a capacitor on the neutral grounding path of wye-configured transformers. This type of GIC blocking device was designed as an effective countermeasure to prevent possible damages… read more here.
Keywords: relay; distance protection; gic neutral; neutral blocking ... See more keywords
Effect of GIC Neutral Blocking Devices (NBDs) on Power Network Ferroresonance in Malaysia
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3184424
Abstract: Geomagnetic disturbance (GMD) arises during space weather and solar activity can result in geomagnetically induced current (GIC) flow in the grounded power transformers in the power network. This GIC may cause half-cycle saturation of transformers… read more here.
Keywords: power; neutral blocking; power network; ferroresonance ... See more keywords
Optimal Blocking Devices Placement for Geomagnetic Disturbance Mitigation Based on Sensitivity of Induced Geoelectric Fields
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DOI: 10.1109/access.2022.3220253
Abstract: When geomagnetic storms occur, geomagnetically induced currents (GICs), as a kind of quasi-DC, flow through the transformer and cause the increase of reactive power loss ( $Q_{\mathrm {GIC}}$ ). Several mitigation actions (e.g., changing grid… read more here.
Keywords: sensitivity; tex math; scenario; induced geoelectric ... See more keywords
Advanced DC Bias Suppression Strategy Based on Finite DC Blocking Devices
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DOI: 10.1109/tpwrd.2017.2649582
Abstract: The ground return current of a high voltage direct current system will intrude the transformers adjacent to the grounding electrode in the case of monopole operation, leading to the half-cycle saturation of transformers. To mitigate… read more here.
Keywords: strategy based; based finite; suppression strategy; bias suppression ... See more keywords