Adaptive ground fault protection schemes for turbo-generator based on third harmonic voltages

Equivalent circuits are used to study the characteristics of various generator stator ground fault protection schemes presented in the literature. The evaluation and the comparison of the characteristics of those schemes are given by means of Protection Coverage-Critical Resistance curves. Although...

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Bibliographic Details
Published in:IEEE transactions on power delivery 1990, Vol.5 (2), p.595-603
Main Authors: YIN, X. G, MALIK, O. P, CHEN, D. S
Format: Article
Language:English
Subjects:
240500 > Power Transmission & Distribution-- Environmental Aspects-- (1990-)
990200 > Mathematics & Computers
Applied sciences
COMPUTERIZED SIMULATION
DIGITAL SYSTEMS
Disturbances. Regulation. Protection
ELECTRIC CONDUCTIVITY
ELECTRIC GENERATORS
Electrical engineering. Electrical power engineering
ELECTRICAL FAULTS
Electrical power engineering
ELECTRICAL PROPERTIES
EQUIPMENT PROTECTION DEVICES
Exact sciences and technology
FREQUENCY MIXING
GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
HARMONIC GENERATION
PHYSICAL PROPERTIES
Power networks and lines
POWER TRANSMISSION AND DISTRIBUTION
SIMULATION 240100 > Power Systems-- (1990-)
SOILS
TURBOGENERATORS
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Summary:Equivalent circuits are used to study the characteristics of various generator stator ground fault protection schemes presented in the literature. The evaluation and the comparison of the characteristics of those schemes are given by means of Protection Coverage-Critical Resistance curves. Although these schemes are successful in practice, they suffer disadvantage of low sensitivity which is strongly related to generator operating conditions. Two adaptive stator ground fault protection schemes based on digital techniques are developed.
ISSN:0885-8977
1937-4208
DOI:10.1109/61.53061