Surge-suppressing resistors applied to 345- and 500-kV disconnect switches

Conference · Wed Dec 31 23:00:00 EST 1975 · Proc. Am. Power Conf.; (United States)

OSTI ID:5274121

Crino, A D ^[1]; Lott, D L; Stump, K B

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1. Allis-Chalmers Corp., Portland, OR

The use of a simple 345- or 500-kV disconnect switch which can be adapted for safety switching bus sections and/or unloaded transformers is described. The switch-mounted resistors can be quite effective in suppressing overvoltage transients on both energization and deenergization. They also significantly reduce unloaded transformer inrush crrents on energization. By switching the load with low side breakers, the initial cost and maintenance can be reduced. This is particularly true if the high voltage breaker or interrupter has preinsertion resistors in both the opening and closing cycle.

• OSTI ID: 5274121
• Journal Information: Proc. Am. Power Conf.; (United States), Journal Name: Proc. Am. Power Conf.; (United States) Vol. 38; ISSN PAPWA
• Country of Publication: United States
• Language: English

Related Subjects

200301* -- Power Transmission & Distribution-- AC Systems
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
CIRCUIT BREAKERS
EHV AC SYSTEMS
ELECTRICAL EQUIPMENT
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
MATHEMATICAL MODELS
OVERVOLTAGE
PERFORMANCE
PERFORMANCE TESTING
POWER SYSTEMS
POWER TRANSMISSION LINES
RESISTORS
SAFETY
SURGES
SWITCHES
TESTING
TRANSFORMERS
TRANSIENTS