The application of photoconductive switches in HVDC circuit interruption
- Florida Univ., Gainesville, FL (USA). Dept. of Electrical Engineering
- Electric Power Research Inst., Palo Alto, CA (USA). Electrical Systems Div.
A new type of semiconductor switching device has recently emerged, called the photoconductive circuit element or PCE, which appears to have potential for power system applications. The PCE consists basically of a piece of semiconductor material, which can be made highly conductive through applying laser or other intense optical excitation. The main objective of the work reported in this paper was to investigate the basic suitability of the PCE switching device for application in hvdc circuit breakers. Computer simulation results, for a PCE in parallel with a conventional mechanical ac breaker, indicate a significant improvement in dc interrupting time and in maximum interrupting current compared to passive commutation methods. Studies also showed that inherently short arcing times and low transient recovery voltage will allow the use of lower-rated mechanical breakers.
- OSTI ID:
- 5066313
- Journal Information:
- IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA), Vol. 5:1; ISSN 0885-8977
- Country of Publication:
- United States
- Language:
- English
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20 FOSSIL-FUELED POWER PLANTS
36 MATERIALS SCIENCE
HVDC SYSTEMS
SWITCHING CIRCUITS
POWER SYSTEMS
SEMICONDUCTOR DEVICES
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ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
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EQUIPMENT PROTECTION DEVICES
240202* - Power System Networks
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200104 - Fossil-Fueled Power Plants- Components
360601 - Other Materials- Preparation & Manufacture