Protection and control system, and merging unit

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United States of America Patent

PATENT NO 9444243
APP PUB NO 20140232415A1
SERIAL NO

14264461

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Abstract

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A protection and control system includes a first merging unit which obtains an electric variable from a transformer installed in an electric power system, and digitally converts the obtained electric variable to output the converted electric as first electric variable information to a network, and a plurality of protection and control devices, each of which obtains the first electric variable information from the first merging unit through the network, judges whether or not a system fault occurs in a zone to be protected of the electric power system based on a predetermined relay characteristic, and outputs main trip information to the network when that the system fault occurs is judged, wherein the first merging unit judges whether or not the system fault occurs in the zone to be protected.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOSHIBA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishibashi, Akira Tokyo, JP 189 2084
Ohtomo, Yu Higashimurayama, JP 2 6

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