Medium voltage inrush current regulation and interconnection control system and method

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United States of America Patent

PATENT NO 11831271
SERIAL NO

17836804

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A medium voltage inrush current (MVIC) regulator and interconnection control system for interposing between a distributed power generation facility and a utility grid. The facility has a designated generator step-up (GSU) transformer and is connected to the utility grid at a point of interconnect. The system includes a pre-insertion impedance injection transformer, a low voltage first switch connected between the pre-insertion transformer and secondary coils of the designated GSU transformer, a medium voltage second switch connected inline between the pre-insertion transformer and primary coils of the designated GSU transformer, and a controller. In response to restoration of the utility grid following a loss-of-grid event, the controller opens and closes the first and second switches according to an automated pre-energization switching sequence such that magnetic flux in the designated GSU transformer occurs at a reduced rate, thereby reducing inrush of current and undesirable power quality phenomena.

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Patent Owner(s)

  • ADERIS ENERGY, LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Foodman, Adam Will Charlotte, US 7 1
Micallef, Bradley Allan Davidson, US 7 1
Olsen,, Jr Olee Joel Cornelius, US 6 0

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