Battelle Memorial Institute

Bishnu P Bhattarai

Donald J Hammerstrom

Robert G Pratt

Wei Du

Kevin P Schneider

Jacob Hansen

Abhishek Somani

Md Jan E Alam

Nikitha Radhakrishnan

Bilal Ahmad Bhatti

Steven E Widergren

Saptarshi Bhattacharya

Apparatus and methods are disclosed for restoring operation of a power grid comprising a plurality of reclosers and distributed energy resources (DERs) responsive to abnormal conditions by determining and implementing a reconfiguration for the power grid. The reconfiguration can specify respective new statuses for one or more of the reclosers and/or respective quantities of reactive power to be supplied by one or more of the DERs. The reconfiguration can be determined based on a plurality of constraints using an objective function, the constraints being determined based at least in part on recloser status data and/or DER power generation capability data. Respective cleared quantities of reactive power for the DERs to supply to the reconfigured power grid can be determined via a transactive control scheme, and the reconfiguration can be updated prior to implementation based on the results of the transactive control scheme.

Reconfiguration of power grids during abnormal conditions using reclosers and distributed energy resources

Methods and apparatus provide flexible allocation and regulation of scheduled energy transfers between energy storage devices ('batteries') and a power grid. Piecewise mappings having at least one sloping segment enable gradual variations in scheduled energy transfers as cleared values of a medium of energy exchange deviate from predicted values of the medium of energy exchange. Thereby deviations from a battery's predicted energy transfer schedule can be reduced, and overall smoother operation of a power grid can be achieved. Two sloping linear segments can be separated by a dead band, a portion of the mapping in which the scheduled energy transfer amount is invariant. A dead zone can increase the likelihood of a battery meeting its predicted schedule.

Flexible allocation of energy storage in power grids

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Kennewick, WA, United States of America

Bishnu P Bhattarai