Power system fault characterization using transformed values

Details Power system fault characterization using transformed values Power system fault characterization using transformed values

2008-07-22

2008-07-22

Sherry, Michael J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

Reexamination Certificate

active

11565128

ABSTRACT:
An apparatus can include a fault condition detector configured to detect a fault condition in an electrical system, a delta d-q power value generator configured to generate a delta d-q power value temporally corresponding to the detected fault condition, and a characterizer circuit configured to characterize the fault condition relative to the apparatus responsive to the delta d-q power value. Methods can include detecting a fault condition in an electrical system and determining changes in d-q component voltage and current temporally corresponding to the detected fault condition. Such methods can further include characterizing the fault condition responsive to the determined first and second changes and controlling an apparatus based on characterizing the fault condition.

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“Insulated Gate Bipolar Transistor,” http://en.wikipedia.org/wiki/IGBT Nov. 2, 2006.

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