Proposed transient recovery voltage ratings for power circuit breakers

Journal Article · Thu Jul 01 04:00:00 EDT 1965 · IEEE Trans. Power Appar. Syst.; (United States)

DOI:https://doi.org/10.1109/TPAS.1965.4766231· OSTI ID:6922325

Naef, O; Zimmerman, C P; Beehler, J E

Representative unmodified transient recovery voltages (TRVs) of power systems have been selected to derive the recovery voltage ratings for power circuit breakers. Mathematical expressions have been derived that combine fundamental system parameters such as load current, line impedance, voltage regulation, and transformer reactance, together with the rated voltage and circuit interrupting capabilities of the breaker, to describe the TRV withstand requirements for power circuit breakers. Two points in a volt-time plane are developed to describe the TRV withstand requirements of power breakers, and numerical values are listed for these proposed rating values. The TRV ratings for fault currents less than related currents and for kilometric short line faults are also developed. Since the expressions developed describe system recovery voltages, they may also be used to calculate the TRV of actual power systems.

• OSTI ID: 6922325
• Journal Information: IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. 84; ISSN IEPSA
• 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
ELECTRICAL FAULTS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
OPERATION
OVERCURRENT
OVERVOLTAGE
POWER SYSTEMS
SPECIFICATIONS