US 10,615,604 B2Granted

Decoupling synchrophasor based control system for distributed energy resources

AssigneePXiSE Energy Solutions, LLC

InventorsCharles H. Wells, Raymond A. de Callafon, Patrick T. Lee

Life of this patent

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Abstract

Attributes of a power system having one or more distributed energy resources are characterized by continuously receiving data comprising a power data stream having at least two components and derived from at least one distributed energy resource. A control data stream comprising at least two components is generated. An error data stream is determined based on a difference between respective components of the power data stream to components of a reference data stream comprising at least two components. The error data stream and the reference data stream are processed to generate the control data stream. The control data stream is continuously output to enable control and/or monitoring of the power flow of at least one distributed energy resource.

Claims27

Dependent claims

A method for controlling a power system, the method being implemented by at least one data processor, the method comprising:

continuously receiving, by the at least one data processor, data comprising a power data stream based on a measurement at a point of interest of the power system, the power data stream having at least two components, wherein at least one distributed energy resource is electrically coupled to the point of interest providing the power data stream;
continuously generating, by the at least one data processor, a control data stream based on the power data stream, an error data stream, and a reference data stream, the control data stream comprising a real power component and a reactive power component and continuously generated by:
determining, by the at least one data processor, the error data stream comprising a voltage component and a current component based on a difference between respective components of the power data stream to components of the reference data stream comprising at least two components;
and
independently processing, by the at least one data processor, each of the voltage component and the current component of the error data stream and the reference data stream to generate the control data stream, wherein the independent processing of each of the voltage component and the current component of the error data stream maintains decoupling between each component;
continuously providing, by the at least one data processor, the control data stream to track the power data stream at the point of interest in the power system via a feedback loop to enable control and/or monitoring of power flow of the at least one distributed energy resource;
and
controlling, by the at least one data processor, power output of the at least one distributed energy resource based on the control data stream.

5 more elements

A system for controlling a power system comprising:

at least one data processor;
memory storing instructions which when executed by the at least one data processor result in operations comprising:
continuously receiving, by the at least one data processor, data comprising a power data stream based on a measurement at a point of interest of the power system, the power data stream having at least two components, wherein at least one distributed energy resource is electrically coupled to the point of interest providing the power data stream;
continuously generating, by the at least one data processor, a control data stream based on the power data stream, an error data stream, and a reference data stream, the control data stream comprising a real power component and a reactive power component and continuously generated by:
determining, by the at least one data processor, the error data stream comprising a voltage component and a current component based on a difference between respective components of the power data stream to components of the reference data stream comprising at least two components;
and
independently processing, by the at least one data processor, each of the voltage component and the current component of the error data stream and the reference data stream to generate the control data stream, wherein the independent processing of each of the voltage component and the current component of the error data stream maintains decoupling between each component;
continuously providing, by the at least one data processor, the control data stream to track the point of interest in the power system via a feedback loop to enable control and/or monitoring of power flow of the at least one distributed energy resource;
and
controlling, by the at least one data processor, power output of the at least one distributed energy resource based on the control data stream.

7 more elements

A non-transitory computer program product, for controlling a power system, comprising a computer-readable storage medium having computer-readable program instructions, which when executed result in operations comprising:

continuously receiving, by at least one data processor, data comprising a power data stream based on a measurement at a point of interest of the power system, the power data stream having at least two components, wherein at least one distributed energy resource is electrically coupled to the point of interest providing the power data stream;
continuously generating, by the at least one data processor, a control data stream based on the power data stream, an error data stream, and a reference data stream, the control data stream comprising a real power component and a reactive power component and continuously generated by:
synchronizing, by the at least one data processor, the at least two components of the power data stream based on temporal matching of each component to generate a time synchronized data stream comprising at least two components;
determining, by the at least one data processor, the error data stream comprising a voltage component and a current component based on a difference between respective components of the power data stream to components of the reference data stream comprising at least two components;
and
independently processing, by the at least one data processor, each of the voltage component and the current component of the error data stream and the reference data stream to generate the control data stream, wherein the independent processing of each of the voltage component and the current component of the error data stream maintains decoupling between each component;
continuously providing, by the at least one data processor, the control data stream to track the point of interest in the power system via a feedback loop to enable control and/or monitoring of power flow of the at least one distributed energy resource;
and
controlling, by the at least one data processor, power output of the at least one distributed energy resource based on the control data stream.

6 more elements

A method for controlling a power system, the method being implemented by at least one data processor and comprising:

continuously receiving, by the at least one data processor, data comprising a power data stream based on a measurement at a point of interest of the power system, the power data stream having at least two components, wherein at least one distributed energy resource is electrically coupled to the point of interest providing the power data stream;
continuously generating, by the at least one data processor, a control data stream based on the power data stream, an error data stream, and a reference data stream, the control data stream comprising a real power component and a reactive power component and continuously generated by:
synchronizing, by the at least one data processor, the at least two components of the power data stream based on temporal matching of each component to generate a time synchronized data stream comprising at least two components;
determining, by the at least one data processor, the error data stream comprising a voltage component and a current component based on a difference between respective components of the time synchronized data stream to components of the reference data stream comprising at least two components;
and
independently processing, by the at least one data processor, each of the voltage component and the current component of the error data stream and the reference data stream to generate the control data stream, wherein the independent processing of each of the voltage component and the current component of the error data stream maintains decoupling between each component;
continuously providing, by the at least one data processor, the control data stream to track the point of interest in the power system via a feedback loop to enable control and/or monitoring of power flow of the at least one distributed energy resource;
and
controlling, by the at least one data processor, power output of the at least one distributed energy resource based on the control data stream.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/607,076Filed 26 May 2017 · continuation in part
Priority: 28 May 2016
Published: US 2017/0346286 A130 Nov 2017
Granted: 7 Apr 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

H02J 13/13
Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network: characterised by the…
G01R 19/2513
Using digital measurement techniques: arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
G06F 1/26
Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00: power supply means, e.g. regulation thereof
H02J 3/38
Circuit arrangements for AC mains or AC distribution networks: arrangements for feeding a single network from two or more generators or sources in…

Family

Application15/168,034Parent of this continuation-in-part · filed 28 May 2016
US 2017/0346291 A1Pre-grant publication · published 30 Nov 2017
US 10,027,119 B2Parent of this continuation-in-part
US 2017/0346286 A1Published application
US 10,615,604 B2This patent

From the US filing history. Foreign family members aren’t listed.