Experimental investigation of steep-front short duration (SFSD) surge effects on power systems components

Technical Report · Fri May 01 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/5243236· OSTI ID:5243236

Miller, D B ^[1]

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1. 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. (ORNL), Oak Ridge, TN (United States); Mississippi State Univ., MS (United States). Dept. of Electrical and Computer Engineering
• Sponsoring Organization: USDOE; 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

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
42 ENGINEERING
ELECTRICAL EQUIPMENT
ELECTRICAL TESTING
COMPUTERIZED SIMULATION
ELECTRIC CABLES
ELECTRIC CONTACTS
ELECTRICAL INSULATORS
ELECTRICAL TRANSIENTS
FLASHOVER
LIGHTNING ARRESTERS
POLYETHYLENES
POWER SYSTEMS
POWER TRANSMISSION LINES
PULSES
CABLES
CONDUCTOR DEVICES
CURRENTS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
EQUIPMENT
MATERIALS TESTING
NONDESTRUCTIVE TESTING
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYOLEFINS
SIMULATION
TESTING
TRANSIENTS
VOLTAGE DROP
240200* - Power System Networks
Transmission & Distribution- (1990-)
426000 - Engineering- Components
Electron Devices & Circuits- (1990-)
240300 - Power Transmission Lines & Cables- (1990-)