Selective Protection Against Ground Faults in the Stator of Multiple Generators Connected in Parallel

Over the years, several methods of protection against ground faults in the stators of synchronous generators have been developed. However, only recently has a method been proposed capable of guaranteeing protection system selectivity in scenarios involving the operation of multiple generators connec...

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Bibliographic Details
Main Authors: Maciel, Leonardo P. R., Guerrero, Carlos A. V., Da Silveira, Paulo M., Johnson, Brian K., Bainy, Romulo G.
Format: Conference Proceeding
Language:English
Subjects:
100% Stator Protection
Generators
Harmonic analysis
Impedance
Parallelism of Generators
Performance evaluation
Phase-ground Faults
Protection
Real-time systems
Reliability
Selective Generator Protection System
Stator windings
Synchronous generators
Voltage measurement
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Summary:Over the years, several methods of protection against ground faults in the stators of synchronous generators have been developed. However, only recently has a method been proposed capable of guaranteeing protection system selectivity in scenarios involving the operation of multiple generators connected in parallel to the same bus and individually grounded by high impedance. This method has only been proven through offline simulation. This work develops a test platform using a real-time simulation environment and evaluates that selective protection scheme against ground faults in the stator of synchronous generators. The results obtained allow us to conclude that the coverage and efficiency of the evaluated method are conditioned to the harmonic level present in each one of the generators sharing the same busbar.
ISSN:1944-9933
DOI:10.1109/PESGM51994.2024.10688785