System and method for islanding detection and prevention in distributed generation

Title: System and method for islanding detection and prevention in distributed generation

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Various examples are directed to systems and methods for detecting an islanding condition at an inverter configured to couple a distributed generation system to an electrical grid network. A controller may determine a command frequency and a command frequency variation. The controller may determine that the command frequency variation indicates a potential islanding condition and send to the inverter an instruction to disconnect the distributed generation system from the electrical grid network. When the distributed generation system is disconnected from the electrical grid network, the controller may determine whether the grid network is valid.

Inventors:: Bhowmik, Shibashis; Mazhari, Iman; Parkhideh, Babak

Issue Date:: 2018-06-12

OSTI Identifier:: 1457413

Assignee:: Sinewatts, Inc. (Charlotte, NC); The University of North Carolina at Charlotte (Charlotte, NC) DOEEE

Patent Number(s):: 9,997,920

Application Number:: 14/860,159

Contract Number:: EE0006459

Resource Relation:: Patent File Date: 2015 Sep 21

Research Org:: Sinewatts, Inc., Charlotte, NC (United States); The University of North Carolina at Charlotte, Charlotte, NC (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

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