Transverse-field vacuum interrupter. Volume 2. Development of a vacuum arc current limiter. Phase III: the conceptual design and rating of a 145-kV FCL. Final report
Phase 3 of this research project developed a conceptual design and rating for a 145-kV fault current limiter (FCL). The design uses two 72-kV modules in series, each of which in turn uses two commutation devices and a conventional vacuum interrupter in series. These three devices are paralleled by a 25 ..mu..F capacitor and a metal oxide nonlinear resistor having a clamping voltage of 62.5 kV. This arrangement has a capability extrapolated from experiments of commutating currents greater than 16 kA (instantaneous). Analyses involving assumptions about the sensor and actuator characteristics indicated tht the 145-kV FCL could limit the worst fault from a source capable of producing 15-kA rms fault current. In the event of failure to limit the first loop of fault current, the presence of the series-connected vacuum interrupter assures a first current zero limitation of the fault. Application and system analysis showed that no source feeding a 145-kV/15-kA FCL is likely to exceed 15-kA rms fault current. The design parameters of the major components are specified, and their embodiment into a 145-kV/15-kA FCL are described. While an FCL could now be built for field testing, it is recommended that a Phase 4 program be carried out to simplify the commutation device and to optimize the cost effectiveness of the 145-kV FCL.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
- OSTI ID:
- 6461886
- Report Number(s):
- EPRI-EL-2890-Vol.2; ON: DE83901936
- Country of Publication:
- United States
- Language:
- English
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EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
CIRCUIT BREAKERS
COST
CURRENT LIMITERS
DESIGN
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
HVAC SYSTEMS
OPERATION
OVERCURRENT
POWER SUBSTATIONS
POWER SYSTEMS
POWER TRANSMISSION LINES