Short-circuit current partitioning in HV substations in ring-bus arrangement with redundancy

Journal Article · Sat Sep 01 04:00:00 EDT 1984 · IEEE Trans. Power Appar. Syst.; (United States)

DOI:https://doi.org/10.1109/TPAS.1984.318237· OSTI ID:6265779

Koeppl, G; Blahous, L; Hagar, H

This paper proposes a way of reducing the short-circuit current stress imposed on individual circuit-breakers. A ring bus arrangement permits partitioning of the current, which is distributed between two circuit-breakers by splitting up the ring during fault clearing. This means that, in the ideal case, the circuit-breakers could be used up to fault levels of twice their rated interrupting capability. The ''splitting'' function is so easy to perform that any breaker can be expected to accomplish it with high reliability. In addition, it is shown how the availability of a station employing the method of short-circuit current partitioning can be significantly increased by using a ring bus with redundancy. The operational, economic and protective aspects of such a ring bus station are discussed. They show that a ring bus with redundancy and short-circuit current partitioning can be realized with conventional control and protective equipment. The potential saving in costs can be considerable.

• Research Organization: BBC Brown, Boveri and Company, Ltd., Baden
• OSTI ID: 6265779
• Journal Information: IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. PAS-103:9; ISSN IEPSA
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
AVAILABILITY
CAPACITY
CIRCUIT BREAKERS
COST BENEFIT ANALYSIS
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
POWER SUBSTATIONS
RELIABILITY
RINGS
SWITCHES