Devices and methods for decentralized coordinated volt/VAR control
First Claim
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1. A controller comprising:
- a network interface configured to receive first measurements associated with a segment of an electrical distribution system and transmit a control signal configured to control equipment of the segment of the electrical distribution system; and
data processing circuitry configured;
to determine a total load on the segment of the electrical distribution system;
to run a first simulation of the segment of the electrical distribution system simulating various equipment configurations based at least in part on the first measurements;
to select from among the various equipment configurations, depending at least in part on the total load;
a first equipment configuration that is expected to cause a voltage deviation of the segment of the electrical distribution system to most closely approach a first desired value without causing voltage violations or power factor to fall beneath a power factor threshold;
a second equipment configuration that is expected to cause the voltage deviation of the segment of the electrical distribution system to more closely approach the first desired value than otherwise and active power losses of the segment of the electrical distribution system to more closely approach a second desired value than otherwise without causing voltage violations or power factor to fall beneath the power factor threshold;
ora third equipment configuration that is expected to cause the active power losses of the segment of the electrical distribution system to most closely approach the second desired value without causing voltage violations or power factor to fall beneath the power factor threshold; and
to generate the control signal, wherein the control signal is configured to cause the equipment of the segment of the electrical distribution system to conform to the equipment configuration.
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Abstract
Devices and methods for decentralized coordinated Volt/VAR control are provided. Such a device may allow, for example, an operational parameter such as voltage, power losses, a combination of these, and/or power factor to be optimized on a segment of an electrical distribution system under certain conditions. For example, a controller may include a network interface to receive measurements and data processing circuitry to optimize a voltage deviation, active power losses, or a combination thereof, based at least in part on the total load on the segment of the electrical distribution system.
75 Citations
20 Claims
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1. A controller comprising:
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a network interface configured to receive first measurements associated with a segment of an electrical distribution system and transmit a control signal configured to control equipment of the segment of the electrical distribution system; and data processing circuitry configured; to determine a total load on the segment of the electrical distribution system; to run a first simulation of the segment of the electrical distribution system simulating various equipment configurations based at least in part on the first measurements; to select from among the various equipment configurations, depending at least in part on the total load; a first equipment configuration that is expected to cause a voltage deviation of the segment of the electrical distribution system to most closely approach a first desired value without causing voltage violations or power factor to fall beneath a power factor threshold; a second equipment configuration that is expected to cause the voltage deviation of the segment of the electrical distribution system to more closely approach the first desired value than otherwise and active power losses of the segment of the electrical distribution system to more closely approach a second desired value than otherwise without causing voltage violations or power factor to fall beneath the power factor threshold;
ora third equipment configuration that is expected to cause the active power losses of the segment of the electrical distribution system to most closely approach the second desired value without causing voltage violations or power factor to fall beneath the power factor threshold; and to generate the control signal, wherein the control signal is configured to cause the equipment of the segment of the electrical distribution system to conform to the equipment configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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determining, using a first substation application platform associated with a first segment of an electrical distribution system or a second substation application platform associated with a second segment of the electrical distribution system, an estimated cost of generating power at a current or future time period on the first segment of an electrical distribution system or the second segment of the electrical distribution system, or both; and determining to run, using the first substation application platform or the second substation application platform; a voltage control function to cause a voltage deviation of the first segment or the second segment, or both, to most closely approach a first desired value without causing voltage violations or power factor to fall beneath a power factor threshold; a Volt/VAR control function to cause the voltage deviation of the first segment or the second segment, or both, to more closely approach the first desired value than otherwise and active power losses of the first segment or the second segment, or both, to more closely approach a second desired value than otherwise without causing voltage violations or power factor to fall beneath the power factor threshold; a power loss reduction function to cause the active power losses of the first segment or the second segment, or both, to most closely approach the second desired value without causing voltage violations or power factor to fall beneath the power factor threshold;
ora power factor control function to cause the power factor to most closely approach a desired power factor value;
ora combination thereof; based at least in part on the estimated cost of generating power during the current or future time period. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An article of manufacture comprising:
one or more tangible, machine-readable storage media having instructions encoded thereon for execution by a processor of an electronic device, the instructions comprising; instructions to receive measurements associated with a feeder of an electrical distribution system; instructions to determine an expected load on the feeder at a present or future time period; instructions to simulate a distribution power flow of the feeder according to various capacitor switching configurations of at least one capacitor of the feeder using the measurements; instructions to determine an expected voltage deviation, reduction in power loss, and power factor associated with the various capacitor switching configurations based at least in part on the simulated distribution power flow of the feeder; instructions to select a non-dominated capacitor switching configuration from among the various capacitor switching configurations; a first capacitor switching configuration that is expected to cause a voltage deviation of the segment of the electrical distribution system to most closely approach a first desired value without causing voltage violations or power factor to fall beneath a power factor threshold; a second capacitor switching configuration that is expected to cause the voltage deviation of the segment of the electrical distribution system to more closely approach the first desired value than otherwise and active power losses of the segment of the electrical distribution system to more closely approach a second desired value than otherwise without causing voltage violations or power factor to fall beneath the power factor threshold;
ora third capacitor switching configuration that is expected to cause the active power losses of the segment of the electrical distribution system to most closely approach the second desired value without causing voltage violations or power factor to fall beneath the power factor threshold; wherein the first, second, or third capacitor switching configuration is selected based at least in part on the expected load on the feeder at the present or future time period; and instructions to control capacitors of the feeder according to the non-dominated capacitor switching configuration during the present or future time period. - View Dependent Claims (20)
Specification