A survey of generator back-up protection practices: IEEE committee report

The authors report on and analyze a survey of practices and experiences with time-delay back-up protection associated with unit-connected generators, predominantly rated 100 MVA and above. In addition, application and setting considerations are discussed. The survey covered large unit-connected inst...

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Bibliographic Details
Published in:IEEE transactions on power delivery 1990-04, Vol.5 (2), p.575-584
Main Authors: Rockefeller, G.D., Darlington, A.N., Elmore, W.A., Fernandez, R.J., Gil-Berlinches, J.R., Haas, R.W., Landoll, L.E., Marsh, W.J., Nail, G.R., Pierce, A.C., Wagner, C.L., Wright, L.S.
Format: Article
Language:English
Subjects:
Applied sciences
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Generators
Power networks and lines
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Summary:The authors report on and analyze a survey of practices and experiences with time-delay back-up protection associated with unit-connected generators, predominantly rated 100 MVA and above. In addition, application and setting considerations are discussed. The survey covered large unit-connected installations, involving 47 respondents and 6698 unit-years of experience. Phase back-up, negative-sequence overcurrent, and high-side neutral overcurrent protection were considered. The majority of respondents were found to apply all three classes of back-up protection: phase, negative-sequence, and high-side neutral overcurrent.< >
ISSN:0885-8977
1937-4208
DOI:10.1109/61.53059