Results 261 to 270 of about 11,042 (303)
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IGBT Fault Current Limiting Circuit
IEEE Industry Applications Magazine, 1995Circuits are proposed which, by limiting the fault current magnitude, extends the short-circuit withstand time of high-efficiency (high-gain) IGBTs (insulated-gate bipolar transistors). Limiting of the fault current magnitude also results in reduced turn-off voltage transients, a desirable byproduct, especially for higher current modules. Moreover, the
R. Chokhawala, G. Castino
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Analysis of Current for Fault- Tolerant Control of Excitation Fault in DSEG
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018Doubly salient electromagnetic generator (DSEG)is a new type of high reliability DC generator. This paper gives a brief introduction to the fault-tolerant control strategy for the excitation fault of DSEG, once the fault of excitation part occurs, the energy storage capacitor on the load side acts as excitation power and directly provides excitation ...
Tengxiang Wen +3 more
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Online fault location on AC cables in underground transmission systems using sheath currents
Electric Power Systems Research, 2014 This paper studies online travelling wave methods for fault location on a crossbonded cable system using sheath currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform ...
Gudmundsdottir, Unnur Stella +4 more
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Fault current contribution of DFIG under unsymmetrical fault
2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011In this paper, the transient characteristics of double-fed induction generator (DFIG) are analyzed. Based on this, the fault current contribution of DFIG with and without crowbar are compared. Comparison result shows that fault current of DFIG under different ride-through conditions differs widely from each other.
Zheng-rong Wu +4 more
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An Ultrafast Fault Sensor for a Fault Current Limiting Device
IEEE Power Engineering Review, 1979A power system fault current limiting device must act quickly if it is to limit the initial fault current.
I. Lee +4 more
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IEEE Transactions on Applied Superconductivity, 2018
This paper proposes the concept of “fault current limitation coordination” in a future electric power grid with multiple superconducting fault current limiters (SFCL). Not only the fault current limitation of each SFCL on a transmission line, but also the transient stability of the grid with SFCLs should be taken into account, because the disturbance ...
Naoki Hayakawa +2 more
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This paper proposes the concept of “fault current limitation coordination” in a future electric power grid with multiple superconducting fault current limiters (SFCL). Not only the fault current limitation of each SFCL on a transmission line, but also the transient stability of the grid with SFCLs should be taken into account, because the disturbance ...
Naoki Hayakawa +2 more
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SLG Fault Detection in Presence of Strong Capacitive Currents in Compensated Networks
IEEE Transactions on Power Delivery, 2007 International audienceThe detection of single line-to-ground (SLG) fault in compensated distribution networks can be hampered by important capacitive currents. The way of dealing this problem depends on particular regime where data is acquired.
Kaczmarek, Robert, Huang, Wan-Ying
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Fault Ride Through and Fault Current Management for Microgrids
2020Over the recent years, the distributed energy resource (DER) generation and integration with utility grid became the most widely used worldwide. Thereon, the integration of distributed energy resources to the power grid and their dynamics during grid faults had become a critical issue in the new grid code requirements. In line with this, the fault ride
Wei Kou, Sung-Yeul Park
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2012 Seventh International Conference on Computer Engineering & Systems (ICCES), 2012
Superconducting fault current limiters (SFCLs) are used to limit the short-circuit current level in electrical transmission and distribution networks. Applications of SFCLs would not only decrease the stress on network devices, but also can offer a connection to improve the reliability of power system.
Mohamed M. Aly, Emad A. Mohamed
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Superconducting fault current limiters (SFCLs) are used to limit the short-circuit current level in electrical transmission and distribution networks. Applications of SFCLs would not only decrease the stress on network devices, but also can offer a connection to improve the reliability of power system.
Mohamed M. Aly, Emad A. Mohamed
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Fault-resistance effect on ground fault current
Electrical Engineering, 1953GROUND FAULT currents may be reduced substantially when fault resistance is included in the fault circuit. The majority of faults that occur on a power system involve ground and occur between conductor and tower. When a fault occurs to a steel tower or grounded wood pole on a grounded system the footing resistance is included automatically in the fault
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