The response of MOV and SiC arresters to steep-front longer duration current pulses

Conference · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.1109/61.131125· OSTI ID:6912996

Miller, D B ^[1]; Fan, Hong Bo ^[2]; Barnes, P R ^[3]

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1. Mississippi State Univ., Mississippi State, MS (USA)
2. North China Inst. of Electric Power, Beijing (China)
3. Oak Ridge National Lab., TN (USA)

An 80 m section of 138 kV transmission cable is used to produce pulses with voltages of several hundred kilovolts, currents greater than 20,000 A and risetimes equal to approximately 50 ns. This line pulser is used to test the response of MOV and gapped SiC surge arresters to steep-front, high current, 1.4 microsecond duration pulses. The typical arrester voltage during a pulse consists of a very strong initial overshoot'' voltage spike, followed by a nearly constant residual'' voltage which lasts to the end of the pulse. The overshoot'' voltage is believed to be related to the inductance of the arrester/divider circuit; this voltage increases linearly with peak current and is about the same for the MOV and SiC arresters. The residual'' voltage indicates the protection offered by the arrester due to its voltage clamping action and is larger for the SiC arrester. Replacing the arrester by a similarly sized aluminum tube allows the inductive portion of the response to be removed, and the true arrester response is then seen to be quite fast. 3 refs., 12 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6912996
• Report Number(s): CONF-900773-1; ON: DE90008572
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240201 -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
240303* -- Power Transmission Lines & Cables-- Overhead Lines-- (1990-)
CURRENT DENSITY
DAMAGE
DESIGN
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
LIGHTNING ARRESTERS
MEASURING METHODS
PERFORMANCE TESTING
PHYSICAL PROTECTION
POWER TRANSMISSION LINES
TESTING
TRANSFORMERS
TRANSIENTS