Microcontroller-based tap changer controller employing half-wave digitization of A.C. signals
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United States of America Patent
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Dec 3, 1996
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app pub date -
Nov 9, 1993
filing date -
Jan 3, 1991
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Abstract
A microcontroller-based tap-changer controller including apparatus for keeping track of an electrically closed tap position and for automatically changing the tap setting of load tap-changing transformers and regulators; the tap-changer controller further utilizes the 'keep-track' tap position to calculate the source voltage of the regulator for reverse power operations; and, a method for paralleling tap-changing transformers and regulators utilizing the circulating current of the units.
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