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:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5243236
- 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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Related Subjects
240200* -- Power System Networks
Transmission & Distribution-- (1990-)
240300 -- Power Transmission Lines & Cables-- (1990-)
42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
CABLES
COMPUTERIZED SIMULATION
CONDUCTOR DEVICES
CURRENTS
ELECTRIC CABLES
ELECTRIC CONTACTS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL TESTING
ELECTRICAL TRANSIENTS
EQUIPMENT
FLASHOVER
LIGHTNING ARRESTERS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POWER SYSTEMS
POWER TRANSMISSION LINES
PULSES
SIMULATION
TESTING
TRANSIENTS
VOLTAGE DROP