Results 161 to 170 of about 1,134,965 (196)
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Application of adaptive reclosers to automatic distribution systems
Proceedings of First International Caracas Conference on Devices, Circuits and Systems, 2002This paper presents a discussion on several issues related to adaptive reclosers. It is shown, by using a realistic example, that adaptive reclosers should be installed in distribution systems with automatic switching capabilities in order to optimize their protective function. In particular, the case of primary circuits with automatic transfer systems
L.G. Perez +4 more
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A wavelet packet based method for adaptive single-pole auto-reclosing
Journal of Zhejiang University SCIENCE C, 2010We present a new algorithm for adaptive single-pole auto-reclosing of power transmission lines using wavelet packet transform. The db8 wavelet packet decomposes the faulted phase voltage waveform to obtain the coefficients of the nodes 257, 259 to 262. An index is then defined from the sum of the energy coefficients of these nodes.
Sadegh Jamali, Navid Ghaffarzadeh
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An Adaptive Reclosing Scheme for Preserving Dynamic Security in Low-Inertia Microgrids
IEEE Transactions on Smart Grid, 2019Conventional reclosing schemes with fixed dead times can threaten the dynamic security of low-inertia microgrids ( $\mu$ Gs) in case of permanent faults. This paper proposes an adaptive reclosing approach for restoring the interrupted feeder operation and maintaining the dynamic security within the shortest time.
Saeed Teimourzadeh +3 more
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Effect of adaptive reclosing on turbine-generator shaft torsional torques
IEEE Transactions on Power Systems, 1994This paper presents the adaptive reclosing technique as a new concept to reduce the high torsional torques to which turbine-generator shafts might be subjected during high-speed reclosing of multi-phase power system faults. In this context, investigations have been conducted on a large turbine-generator model for various multi-phase faults.
A.M. El-Serafi, S.O. Faried
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Adaptation of superconducting fault current limiter to high-speed reclosing
Physica C: Superconductivity, 2009Abstract Using a high temperature superconductor, we constructed and tested a model superconducting fault current limiter (SFCL). The superconductor might break in some cases because of its excessive generation of heat. Therefore, it is desirable to interrupt early the current that flows to superconductor.
T. Koyama, S. Yanabu
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Communication-Aided High-Speed Adaptive Single-Phase Reclosing
IEEE Transactions on Power Delivery, 2013A new communication-aided high-speed single-phase reclosing algorithm is proposed in this paper for transposed transmission lines based on predicted and measured voltage of faulted phase. Analytical analysis based on the distributed line model is performed to derive an equation which can be used to predict the faulted phase voltage after arc extinction
M. R. D. Zadeh, R. Rubeena
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Research on phase-by-phase adaptive reclosing sequence for transmission lines
2019 IEEE 8th International Conference on Advanced Power System Automation and Protection (APAP), 2019There is no feasible method can be used to discriminate between permanent fault and transient fault after the three phase circuit breakers are tripped. Randomly reclosing onto a permanent fault may have a negative impact on the system. For the purpose of solving this problem, a phase-by-phase adaptive reclosing sequence for single-phase grounding fault
Zhenfeng LIANG, Kerun WANG, Wenzheng LI
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An adaptive single phase reclosing algorithm based on the mathematical morphology
2010 5th International Conference on Critical Infrastructure (CRIS), 2010Single-phase Auto-reclosing (SPAR) is widely used on EHV/UHV transmission lines to improve power system reliability. However, reclosing on to a permanent fault can adversely affect the system stability and damage generators and other equipment connected to the line.
null Tao. Zheng +3 more
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Adaptive Reclosing Scheme for flexible Multi-Terminal DC Distribution Grid
2021 6th Asia Conference on Power and Electrical Engineering (ACPEE), 2021For flexible medium-voltage DC distribution grid based on overhead line, this paper proposes an adaptive reclosing scheme. First, the characteristic differences of capacitive coupling voltage between the instantaneous fault and the permanent fault are analyzed.
Xiuyan Wei +4 more
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Adaptive Three-Phase Reclosing of Distribution Network Using the Injected Signal
2020 10th International Conference on Power and Energy Systems (ICPES), 2020An adaptive three-phase reclosing strategy is proposed for distribution network, using the injected signal by putting additional power on secondary ports of the voltage transformer. After distribution network three-phase tripping, the strategy injects a voltage signal before reclosing time.
Liao Liao +4 more
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