The effect of switching surges on 34. 5 kV system design and equipment

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/61.53128· OSTI ID:6732139

Shankland, L A ^[1]; Feltes, J W; Burke, J J ^[2]

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1. Colorado Springs Dept. of Public Utilities, CO (USA)
2. Power Technologies, Inc., Schenectady, NY (USA)

High failure rates of equipment resulting in severe operational problems have caused the Colorado Springs Dept. of Utilities to investigate switching surge phenomena on their 34.5 kV distribution system. Digital simulations were performed to quantify the magnitude of overvoltages created by such operations as cable switching, capacitor bank switching and switch restrike in an effort to identify the causes of padmount switchgear failures on the underground portions of the system. Results of the study indicate that certain system design changes could be made which would greatly alleviate the severity of the switching surge environment presently found on the system. Also, the application of arresters was investigated in an effort to further reduce the impact of these transients. Finally, results of both field tests and digital simulations confirm the need for increased BIL levels in switchgear being purchased for this system voltage.

• OSTI ID: 6732139
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA) Vol. 5:2; ISSN 0885-8977; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
COLORADO
COMPUTERIZED SIMULATION
DESIGN
ELECTRONIC CIRCUITS
FEDERAL REGION VIII
FIELD TESTS
NORTH AMERICA
OPERATION
OVERVOLTAGE
POWER DISTRIBUTION SYSTEMS
SIMULATION
SWITCHING CIRCUITS
TESTING
USA