Decoupling synchrophasor based control system for multiple distributed energy resources
First Claim
1. A method for decoupling control of real and reactive power of a local electrical power system having multiple distributed energy resources at non-co-located points, the method comprising:
- feeding back time-synchronized measurements of voltage phasors and current phasors from multiple phasor measurement units to multivariable linear decoupling controllers; and
controlling the distributed energy resources by the multivariable linear decoupling controllers using linear control by sending, to the distributed energy resources, real and reactive power setpoint pairs derived from the time-synchronized measurements of voltage phasors and current phasors.
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Abstract
A method and system to control distributed energy resources in an electric power system includes generation, storage and controllable loads. The system uses time synchronized measurements of voltage phasor and current phasors and their derivative information that may include real and reactive power to regulate and decouple both static and dynamic effects of real and reactive power flow through the local electric power system connected to the area electric power system. The method and system provides precise real and reactive power demand set point pairs; damping of real and reactive power fluctuations in the local electric power system; decoupling between real and reactive power demand response set points by means of a multivariable control system that uses time synchronized measurements of voltage and current phasors and their derivative information.
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Citations
27 Claims
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1. A method for decoupling control of real and reactive power of a local electrical power system having multiple distributed energy resources at non-co-located points, the method comprising:
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feeding back time-synchronized measurements of voltage phasors and current phasors from multiple phasor measurement units to multivariable linear decoupling controllers; and controlling the distributed energy resources by the multivariable linear decoupling controllers using linear control by sending, to the distributed energy resources, real and reactive power setpoint pairs derived from the time-synchronized measurements of voltage phasors and current phasors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for decoupling control of real and reactive power of a local electrical power system having multiple distributed energy resources at non-co-located points, the system comprising:
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one or more controllers; memory storing instructions which when executed by at least one controller result in operations comprising; feeding back time-synchronized measurements of voltage phasors and current phasors from multiple phasor measurement units to multivariable linear decoupling controllers; and controlling the distributed energy resources by the multivariable linear decoupling controllers using linear control algorithms by sending, to the distributed energy resources, real and reactive power setpoint pairs derived from the time-synchronized measurements of voltage phasors and current phasors. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A controller having computer-readable program instructions, which when executed result in operations comprising:
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feeding back time-synchronized measurements of voltage phasors and current phasors from multiple phasor measurement units to multivariable linear decoupling controllers; and controlling the distributed energy resources by the multivariable linear decoupling controllers using linear control algorithms by sending, to the distributed energy resources, real and reactive power setpoint pairs derived from the time-synchronized measurements of voltage phasors and current phasors. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification