Abb Research Ltd.

Wisys Technology Foundation, Inc.

Hitachi Energy Switzerland Ag

Zhao Li

Fang Yang

James Stoupis

Zhenyuan Wang

Dmitry Ishchenko

Alexandre Oudalov

Xianyong Feng

William Peterson

Salman Mohagheghi

Martin Bass

M Gamini Wickramasekara

James D Stoupis

William L Peterson

A micro-grid system blending utility power with power from multiple renewable sources including energy storage devices provides power factor correction using the renewable sources and energy storage devices by adjustment of associated converters. A controller maximizes power factor correction by utility source subject to a cost weighting of penalties for exceeding a power factor threshold.

Micro-grid energy management system

Systems and methods for integrating demand response with service restoration in an electric distribution system. The electric distribution system may include a plurality of regions, zones, and/or areas including at least an outage area that includes a fault and is not receiving electric current from the electric distribution system and a restoration area that is receiving electric current from the electric distribution system and that may be selectively configured to provide electric current to a selected portion of the outage area. The electric distribution system also includes a plurality of demand responsive loads configured to be selectively isolated from the electric distribution system responsive to a load shed signal. The demand responsive loads may be selectively utilized during service restoration, such as to provide additional excess capacity within the restoration area and/or decrease a magnitude of the electric load applied by the selected portion of the outage area.

Systems and methods for integrating demand response with service restoration in an electric distribution system

A microgrid includes a plurality of distributed energy resources such as controllable distributed electric generators and electrical energy storage devices. A method of controlling operation of the microgrid includes periodically updating a distributed energy resource schedule for the microgrid that includes on/off status of the controllable distributed electric generators and charging/discharging status and rate of the electrical energy storage devices and which satisfies a first control objective for a defined time window, based at least in part on a renewable energy generation and load forecast for the microgrid. The method further includes periodically determining power set points for the controllable distributed energy resources which satisfy a second control objective for a present time interval within the defined time window, the second control objective being a function of at least the distributed energy resource schedule for the microgrid.

Microgrid energy management system and method for controlling operation of a microgrid

A method for automatic protection coordination in a power system network comprises identifying radial source-to-load paths and fault protection devices in the source-to-load paths, for a portion of the power system network to be coordinated. Device settings data for fault protection devices are retrieved, including multiple preconfigured settings for some devices. Fault currents for each of multiple possible electrical faults in said portion of the power system network are predicted, and a selectivity check for each pair of fault protection devices that are adjacent to one another in an identified radial source-to-load path is performed, for each of one or more of the predicted fault currents, taking into account multiple preconfigured settings for remotely controllable fault protection devices. A combination of settings for remotely controllable fault protection devices that minimizes selectivity violations among the pairs is selected, and necessary change-setting commands are sent to remotely controllable fault protection devices.

Online protection coordination for distribution management system

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Zhao Li