Negative-sequence overcurrent element application and coordination in distribution protection

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.252618· OSTI ID:5922962

Elneweihi, A F ^[1]; Schweitzer, E O; Feltis, M W ^[2]

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1. British Columbia Hydro, Vancouver, British Columbia (Canada)
2. Schweitzer Engineering Lab., Inc., Pullman, WA (United States)

Negative-sequence overcurrent elements do not respond to balanced load and can thus be set to operate faster and more sensitively than phase overcurrent elements for phase-to-phase faults. This paper demonstrates that on a radial distribution system, negative-sequence overcurrent elements need only be coordinated with downstream phase overcurrent devices for phase-to-phase faults. Coordination for other fault types is then achieved with no further analysis required. The effects of negative-sequence load current and open phase conductors on negative-sequence overcurrent elements are also discussed.

• OSTI ID: 5922962
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Vol. 8:3; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240200* -- Power System Networks
Transmission & Distribution-- (1990-)
EQUIPMENT PROTECTION DEVICES
LOAD ANALYSIS
OVERCURRENT
POWER DISTRIBUTION SYSTEMS
SURGES
TRANSIENTS