Gridedge Networks, Inc.

Amperion, Inc.

Nachum Sadan

Bruce Renz

Philip Mathew Trioli

Norm Strandberg

Norman A Strandberg

A method and system are provided for a distributed communications and control network that manages Distributed Energy Resources ('DER') on a power utility grid. An integrated network and system uses a hub and spoke, substation-centric network architecture, and comprises: a plurality of edge DER (“E-DERM”) devices, each E-DERM device located at a DER point of interconnection; a single substation DER controller (“D-DERM”) located at a utility substation and configured to manage the plurality of E-DERM devices; integrated point-to-point secured communications between the D-DERM and each of the plurality of E-DERM devices using dual-channel, redundant paths; and closed-loop control software algorithms running autonomously on the D-DERM at the utility substation to monitor and control DER connected to power lines emanating from the utility substation.

Distributed energy resources communications network and control system

A method and system for sending a repetitive permissive guard signal from an electrical power substation to a distributed generation site over existing medium voltage distribution lines to detect an islanding condition and apply transfer trip protection is disclosed. The permissive guard signal causes a receiver at the distributed generation site to control a recloser at the distributed generation site. Loss of the signal at the receiver device causes the tripping of the recloser at the distributed generation site in less than two seconds. The tripping of the recloser physically disconnects the distributed generation site from the electric power grid. The coupling to the medium voltage distribution lines can be implemented via a single phase-to-ground coupling or via a phase-to-phase differential coupling for multi-phase medium voltage distribution lines.

Method and system for distributed generation trip protection using power line carrier signaling

A communication device for use on high voltage power lines provides for broadband communications over such high voltage power lines. The device has an impedance matching circuit configured to connect at one end to a high voltage line arrester of the high voltage power line, as well as a limiter circuit coupled to the other end of the impedance matching circuit to limit a voltage associated with a broadband signal. A noise blanker circuit is coupled at one end to this other end of the impedance matching circuit and is configured to inhibit presentation of a time delayed incoming signal to the broadband modem upon detection of electrical noise. The communication device can further comprise link aggregation and/or a differential circuit for providing non-inverted and inverted broadband signals for both reception and transmission. A corresponding method of communicating broadband information over a high voltage power line is disclosed.

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Carlisle, MA, United States of America

Nachum Sadan