Results 1 to 10 of about 311,384 (120)
Electricity, 2021 The introduction of series capacitors in transmission lines causes problems in terms of reliability and the security of distance protection relays. As distance protection is widely used in the transmission network, the challenge of applying it to series ...
Md Tanbhir Hoq, Nathaniel Taylor
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Transmission Line Distance Protection Under Current Transformer Saturation
Journal of Modern Power Systems and Clean Energy, 2021 Conventional transmission line distance protection approaches are subject to malfunction under reverse fault-induced current transformer (CT) saturation for the typically employed breaker-and-a-half configuration.
Yuping Zheng +5 more
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Applied Sciences, 2021 This paper analyzes the influence of inverter-interfaced distributed generations’ (IIDGs) response during transmission network faults. The simplest and safest solution is to switch IIDGs off during network faults without impacting the network voltages. A
Boštjan Polajžer +3 more
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Calculation of specific operating modes of relay protection for AC traction networks
Вестник Научно-исследовательского института железнодорожного транспорта, 2020 Relay protection of traction networks against short-circuit currents in alternating current sections should have both selectivity and speed. However, in areas with an increased probability of burnout of contact wires during a short circuit, selectivity ...
K. S. Subkhanverdiev
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Distance Relay Over-reach Prevention by Impedance Starter Adjustment in: Ph-to-Ph Faults [PDF]
International Journal of Research and Technology in Electrical Industry, 2023 The protection of transmission and sub-transmission lines is conducted by overcurrent, line differential and distance protections among which the use of distance protection is very common.Mal-operation of protection equipment, including distance ...
Ehsan Karami +2 more
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Mutual Coupling Compensation Techniques Used for Distance Protection of Parallel Lines
Energies, 2021 When a distance relay protects a transmission line located on a dual circuit tower, a coupling effect will occur between the two circuits. Transposition of the circuits can reduce the mutual impedances, but this does not cater to the zero-sequence mutual
Michael O Donovan +3 more
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Misoperation analysis and logic optimization of distance protection section I of polygonal impedance
Zhejiang dianli, 2022 The widely used distance protection is of great significance to operation reliability of power grid. The paper cites an example of misoperation of distance protection section I and points out the defects of action zone configuration of polygonal ...
QIAN Zhengxu +5 more
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Fault Studies and Distance Protection of Transmission Lines Connected to DFIG-Based Wind Farms
Applied Sciences, 2018 Doubly fed induction generator (DFIG) based wind farms are being increasingly integrated into power grids with transmission lines, and distance protection is usually used as either the main or the backup protection for the transmission line.
Bin Li, Junyu Liu, Xin Wang, Lili Zhao
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IEEE Access, 2022 Distributed Generations are usually connected to the ac grid through HVDC transmission systems. However, due to the current injected by the grid-side voltage source converter (GVSC), the voltage drop after a short-circuit fault will be partly compensated.
Jipu Gao +4 more
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Improvement of Distance Protection with SVM on PV-Fed Transmission Lines in Infeed Conditions
Energies, 2023 Photovoltaic (PV) power plants have comparatively weak infeed characteristics, unlike conventional synchronous generators. The controllability of grid-connected inverters and the limited overcurrent capability of power electronic devices means that the ...
Yasar Beyazit Yoldas, Recep Yumurtacı
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