Experimental investigation of steep-front short duration (SFSD) surge effects on power systems components
- Mississippi State Univ., MS (United States). Dept. of Electrical and Computer Engineering
Results are reported from experiments in which steep-front, short- duration (SFSD) voltage impulses were imposed on various electrical distribution components. These pulses were generated by switching a section of charged, high voltage coaxial cable across the component under study. Components included underground distribution cable, terminators, insulators and arresters. SFSD voltage needed to flashover 15 kV polyethylene cable with a single pulse is approximately 625 kV peak. Strength of polyethylene cable decreases with increasing number of SFSD pulses, indicating cumulative degradation of the polymer. For 15 kV and 25 kV cable terminators, the SFSD CFO was over twice the rated standard lightning BIL for the same units. Similarly, porcelain suspension insulators required more than a doubling of voltage to decrease time to flashover from 1 microsecond to .1 microsecond. Arresters were found to respond rapidly to steep-front current pulses, but the arrester material itself was found to result in a higher discharge voltage for SFSD pulses. Arresters also showed a delay in turn-on of current following the arrival of a steep-front voltage surge.
- Research Organization:
- Oak Ridge National Lab., TN (United States); Mississippi State Univ., MS (United States). Dept. of Electrical and Computer Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10146705
- Report Number(s):
- ORNL/Sub--87-91345; ON: DE92014747
- Country of Publication:
- United States
- Language:
- English
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The effects of steep-front, short-duration impulses on power distribution components
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COMPONENTS
ELECTRON DEVICES AND CIRCUITS
COMPUTERIZED SIMULATION
ELECTRIC CABLES
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL TESTING
ELECTRICAL TRANSIENTS
FLASHOVER
LIGHTNING ARRESTERS
POLYETHYLENES
POWER SYSTEM NETWORKS
TRANSMISSION AND DISTRIBUTION
POWER SYSTEMS
POWER TRANSMISSION LINES
POWER TRANSMISSION LINES AND CABLES
PULSES