Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1992-05-27
1993-12-21
Stephan, Steven L.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363 35, 363 37, H02J 336
Patent
active
052726177
ABSTRACT:
There is disclosed an apparatus for detecting a short-circuit of a bi-polar d.c. transmission system in which one end of a neutral line is ground and the other end thereof is not ground. This short-circuit detecting apparatus is adapted to detect a short-circuit between d.c. transmission lines on conditions that a current flowing in the neutral line is below a predetermined value, that a ground current at the ground point of the neutral line is below a predetermined value, and that a difference between bi-polar current command values is above a predetermined value.
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Davidson Ben M.
Kabushiki Kaisha Toshiba
Stephan Steven L.
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