Results 281 to 290 of about 2,858,375 (353)

Power system faults to ground: Part II: Fault resistance

Electrical Engineering, 1937
AN ALLOWANCE for fault resistance in fault current computations is desirable in certain types of problems. The present paper gives the results of a study made to determine reasonable values of fault resistance to use in computing line-to-ground fault currents, particularly in inductive co-ordination studies.
C. L. Gilkeson, P. A. Jeanne, E. F. Vaage   +2 more
openaire   +1 more source

Hierarchical distributed model scheme implementation in DC μgrid for numerous ground faults condition

The International Journal of Electrical Engineering & Education, 2018
This article presents a new protection scheme for the µgrid structure is implemented on low voltage side as DC system’s protection methods are quite new when compared to the AC systems.
T. Yuvaraja, K. Ramya
semanticscholar   +1 more source

Improved Generator Ground Fault Schemes

2020
The purpose of this paper is to review new or improved methods related to generator ground fault protection. Established stator ground fault protection schemes as referenced in IEEE Guides C37.101-2006 and C37.102-2006 are proven to be effective under the most common failure modes but may fall short in detecting faults that develop due to arcing faults
Finney, Dale, Das, Manish, Hasnain Ashrafi, Beckwith, Tom, Zeeky Bukhala, Ritwik Chowdhury, Cooper, Marion, Donolo, Marcos, Espinosa, Jason, Fischer, Normann, Fredrickson, Dale, Hamilton, Randy, Hartmann, Wayne, Mital Kanabar, Klingerman, Nathan, Kobet, Gary, Kumar, Prem, Mozina, Charles, Nagpal, Mukesh, Patterson, Russell, Superat Pavavicharn, Pettigrew, Robert, Polanco, Luis, Reichard, Michael, Safari-Shad, Nader, Pragnesh Shah, Thakur, Sudhir, Turner, Steve, Tziouvaras, Demetrios   +28 more
openaire   +2 more sources

Performance of Ground-Relayed Distribution Circuits During Faults to Ground

Transactions of the American Institute of Electrical Engineers, 1942
An extensive oscillographic study has been made on power distribution feeders primarily to obtain data useful in the consideration of joint use of poles by power and telephone facilities. Some of the results, chiefly those obtained from three-phase, four-wire, multigrounded neutral feeders equipped with instantaneous ground relays and for immediate ...
C. L. Gilkeson, P. A. Jeanne, J. C. Davenport   +2 more
openaire   +1 more source

MV generator low-resistance grounding and stator ground fault damage

Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting., 2003
Most of the in-plant medium-voltage generators are grounded through resistors ranging from 200 A to 400 A. In some unusual situations, the resistors may even be as high as 1200 A. low-resistance grounding is a preferred choice for a medium-voltage power distribution system.
A. Wu, Y. Tang, D. Finney
openaire   +1 more source

Transient Characteristics Under Ground and Short-Circuit Faults in a ${\pm \text{500}\,\text{kV}}$ MMC-Based HVDC System With Hybrid DC Circuit Breakers

IEEE Transactions on Power Delivery, 2018
The development of voltage-source-converter (VSC)-based high-voltage direct current (HVDC) systems has increased significantly. However, the implementation of VSC-HVDC systems is limited for lacking fast, low-loss, and reliable circuit breakers.
Xue Han, W. Sima, Ming Yang, Licheng Li, T. Yuan, Yan Si   +5 more
semanticscholar   +1 more source

A supervised principal component analysis-based approach of fault localization in transmission lines for single line to ground faults

Electrical Engineering, 2021
Alok K. Mukherjee, P. Kundu, Arabinda Das   +2 more
semanticscholar   +1 more source

Ground Fault Analysis in a Microgrid Scenario

2019 IEEE Milan PowerTech, 2019
Microgrids are based on the same grounding schemes generally adopted in the low voltage radial distribution grids. Unlike traditional distribution grids, in islanded microgrids the neutral grounding becomes a complex problem due to different operating configurations. All the electrical devices connected to the microgrid must be modeled to guarantee the
Dolara A., Ogliari E., Raboni P.
openaire   +2 more sources

Advanced generator ground fault protections

2015 68th Annual Conference for Protective Relay Engineers, 2015
Ground faults in generator stator and field/rotor circuits are serious events that can lead to damage, costly repair, extended outage and loss of revenue. This paper explores advances in field/rotor circuit ground fault and stator ground fault protection.
openaire   +1 more source

Unit-connected generator with ground-fault neutralizer in generator neutral during ground-fault process

IEEE/PES Transmission and Distribution Conference and Exhibition, 2003
The 1st harmonic of the voltage zero-sequence component in the generator neutral during generator normal operation, during faults in the generator stator windings and in the power system and 3rd harmonic of the voltage zero-sequence component in generator neutral during normal operation and during ground-faults in stator winding are analysed.
openaire   +1 more source