AMI BASED VOLT-VAR OPTIMIZATION USING ONLINE MODEL LEARING
First Claim
1. A power device controller for controlling a power distribution system having at least one feeder, at least one electromechanical device and at least one distributed energy resource without using a power flow model, the controller comprising:
- a communication transceiver structured to receive electrical measurements from a plurality of electronic power meters, the transceiver additionally structured to transmit perturbation signals to the at least one electromechanical device, and the transceiver additionally structured to transmit control signals to the at least one electromechanical device and at least one distributed energy resource;
a memory device structured to store electrical measurements received by the communication transceiver; and
a processing unit structured to receive electrical measurements from the communication transceiver, transmit perturbation signals and control signals to the communication transceiver, receive data stored on the memory device, transmit data to the memory device to be stored, and programmed to;
receive historical measurements generated by the plurality of electronic power meters and electromechanical devices,determine the sensitivities of system voltages over the change in aggregate real power consumption, aggregate reactive power consumption, aggregate distributed energy resource real power generation, and aggregate distributed energy resource reactive power generation, switched capacitor bank reactive power generation and voltage regulator tap position,identify a predictive model based on the determined voltage sensitivities, andtransmit at least one command signal to the communication transceiver, each command signal being structured to modify power line characteristics by controlling a setting of one of the electromechanical devices or one setting of the distributed energy resources.
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Accused Products
Abstract
The present application relates generally to Volt-VAR optimization for power distribution systems having advanced metering infrastructure (AMI). Distributed energy resources (DER) such as photovoltaic arrays are becoming prevalent in distribution systems. These DER systems inject power into the distribution system which can cause unfavorable changes, such as a rise in voltage across the feeder lines of the distribution system. Existing control proposals stiffer from a number of shortcomings, drawbacks and disadvantages. In some instances, traditional controllers for distribution systems with DER systems may require information related to the arrangement of the distribution system which is unknown and cannot be provided by the advanced metering infrastructure. There remains a significant need for the apparatuses, methods, systems and techniques disclosed herein.
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Citations
20 Claims
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1. A power device controller for controlling a power distribution system having at least one feeder, at least one electromechanical device and at least one distributed energy resource without using a power flow model, the controller comprising:
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a communication transceiver structured to receive electrical measurements from a plurality of electronic power meters, the transceiver additionally structured to transmit perturbation signals to the at least one electromechanical device, and the transceiver additionally structured to transmit control signals to the at least one electromechanical device and at least one distributed energy resource; a memory device structured to store electrical measurements received by the communication transceiver; and a processing unit structured to receive electrical measurements from the communication transceiver, transmit perturbation signals and control signals to the communication transceiver, receive data stored on the memory device, transmit data to the memory device to be stored, and programmed to; receive historical measurements generated by the plurality of electronic power meters and electromechanical devices, determine the sensitivities of system voltages over the change in aggregate real power consumption, aggregate reactive power consumption, aggregate distributed energy resource real power generation, and aggregate distributed energy resource reactive power generation, switched capacitor bank reactive power generation and voltage regulator tap position, identify a predictive model based on the determined voltage sensitivities, and transmit at least one command signal to the communication transceiver, each command signal being structured to modify power line characteristics by controlling a setting of one of the electromechanical devices or one setting of the distributed energy resources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A power distribution system comprising:
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a distribution substation; a feeder power line electrically coupled with the distribution substation; at least one lateral power line electrically coupled with the feeder line; at least one secondary power line electrically coupled with the at least one of the lateral power lines; at least one switched capacitor bank electrically coupled with at least one of the feeder power line, one of the lateral power lines, and one of the secondary power lines; at least one voltage regulator electrically coupled with at least one of the feeder power line, one of the lateral power lines, and one of the secondary power lines; at least one load system electrically coupled with the respective feeder power line, lateral power line or secondary power line, the load system including an electronic power meter electrically coupled with the respective feeder power line, lateral power lines or secondary power lines, and an distributed energy resource electrically coupled with each electronic power meter; and a central electronic control system in operative communication with the switched capacitor banks, the voltage regulators, and the distributed energy resources, the central electronic control system being structured to determine a plurality of commands including switching commands for the switched capacitors, tap position commands for the voltage regulators, and power factor commands for the distributed energy resources, using a model predictive controller structured to determine the plurality of control commands based upon a predicted aggregate real power demand of the entire feeder, a predicted aggregate reactive power demand of the entire feeder, a predicted aggregate real power generation of the distributed energy resources, a sensitivity matrix, and the predicted real power demand uncertainty range, and transmit the switching commands to the switched capacitors, the tap position control signals to the voltage regulators and the power factor control signals to the distributed energy resource devices. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification