Thyristor controlled ground fault current limiting system for ungrounded power distribution systems

Journal Article · Mon Apr 01 00:00:00 EST 1996 · IEEE Transactions on Power Delivery

DOI:https://doi.org/10.1109/61.489355· OSTI ID:244832

Sugimoto, S; Neo, S ^[1]; Arita, H; Kida, J; Matsui, Y; Yamagiwa, T ^[2]

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1. Chubu Electric Power Co., Inc., Nagoya (Japan). Electric Power Research and Development Center
2. Hitachi Ltd., Hitachi, Ibaraki (Japan)

A thyristor controlled ground fault current limiting system (TGCL) was proposed to prevent one-line ground fault current rises due to increased capacitance to ground. Basic components of the TGCL are a main ground fault current limiter, which rapidly adjusts a compensating reactor level for the capacitance to ground, and the TGCL`s controller. Control is ensured by an in-phase control method for zero-phase sequence voltage and current. The method determines the direction of ground faults and the compensating reactor level. The fast control which can be realized shows the TGCL is a valuable protecting system for high ground fault current distribution systems.

• OSTI ID: 244832
• Report Number(s): CONF-950727-; ISSN 0885-8977; TRN: IM9627%%154
• Journal Information: IEEE Transactions on Power Delivery, Vol. 11, Issue 2; Conference: 1995 IEEE Power Engineering Society summer meeting, Portland, OR (United States), 23-27 Jul 1995; Other Information: PBD: Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
POWER DISTRIBUTION SYSTEMS
ELECTRIC GROUNDS
ELECTRICAL FAULTS
CURRENT LIMITERS
EQUIPMENT PROTECTION DEVICES