Electromagnetic transients in substations. Volume 3, Test results: Final report

Technical Report · Thu Apr 01 04:00:00 EST 1993

OSTI ID:10172333

Wiggins, C M; Nickel, F S; Salas, T M; Thomas, D E ^[1]

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1. BDM International, Inc., Albuquerque, NM (United States)

High frequency transient electromagnetic interference (EMI) caused by faults, lightning, and switching on high voltage circuits in substations is characterized and quantified using a mobile four-channel transient EMI measurements system and validated traveling wave transient analysis models. More than 800 waveforms of high voltage switching transients and staged-faults were measured in air- and gas-insulated substations and used to validate a system of interrelated substation interference coupling models. The highest transient EMI levels expected from initial conditions of 2PU (Per Unit) disconnect switching, a 2PU circuit breaker fault, and a 10 kA lightning strike inside substations through 500 kV are calculated using the models. These initial conditions, believed to be nominally worst case for these three high voltage EMI sources, are defined as follows. For disconnect switching, the 2PU initial condition represents the maximum peak phase-to-ground voltage that can occur across a switch gap restriking at its greatest separation. An initial condition of 2PU peak phase-to-ground voltage can occur on an open and adjacent substation bus during switching from a remote location. A 10 kA lightning strike represents the maximum current expected to be attached directly to a 500 kV bus as a result of a shielding failure. Volume 1 of this report contains a summary and recommendations; volume 2 covers the computer models; volume 3 provides detailed results of the interference tests; and volumes 4 and 5, available on demand, contain data logs, raw data plots, and digital waveforms.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); BDM International, Inc., Albuquerque, NM (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 10172333
• Report Number(s): EPRI-TR--102006-Vol.3; ON: UN93017110
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240200
42 ENGINEERING
426000
CIRCUIT BREAKERS
COMPONENTS
ELECTRON DEVICES AND CIRCUITS
CONNECTORS
ELECTRICAL TESTING
ELECTRICAL TRANSIENTS
ELECTROMAGNETIC RADIATION
EQUIPMENT PROTECTION DEVICES
POWER SUBSTATIONS
POWER SYSTEM NETWORKS
TRANSMISSION AND DISTRIBUTION
RELAYS
SHIELDING
SWITCHES