Results 1 to 10 of about 298,319 (167)
Energies, 2020 The high penetration of renewable energies will affect the performance of present protection algorithms due to fault current injection from generators based on power electronics.
Eduardo Martínez Carrasco +3 more
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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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Adaptive distance protection for microgrids [PDF]
IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015 Due to the increasing penetration of distributed generation resources, more and more microgrids can be found in distribution systems. This paper proposes a phasor measurement unit based distance protection strategy for microgrids in distribution system. At the same time, transfer tripping scheme is adopted to accelerate the tripping speed of the relays
Hengwei Lin +3 more
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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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Distance protection for microgrids in distribution system [PDF]
IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015 Owing to the increasing penetration of distributed generation, there are some challenges for the conventional protection in distribution system. Bidirectional power flow and variable fault current because of the various operation modes may lead to the selectivity and sensitivity of the overcurrent protection decreased.
Hengwei Lin +3 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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