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US 12,523,684 B2Granted
Voltage management device, voltage command device, power system monitoring system, measurement device, voltage management method, and storage medium
AssigneeMitsubishi Electric Corporation
InventorNobuhiko Itaya
Life of this patent
Estimating the term…
Abstract
A voltage management device according to the present disclosure includes a communication unit that obtains, for each of sections in a power system, a measurement value of a voltage measured by a smart meter connected to that section, where the sections are generated by segmentation between monitoring points, and a voltage estimation unit that estimates, for each of the sections, a voltage drop quantity and a voltage rise quantity in that section using the measurement value.
Claims13
A voltage command device comprising:
- acquisition circuitry to obtain, for each of sections in a power system, a measurement value of a voltage measured by a voltage measurement device connected to a corresponding one of the sections to measure a voltage at an interconnection point of a consumer, the sections being generated by segmentation between monitoring points, to obtain a measurement result from a measurement device that measures a voltage at one of the monitoring points, and to obtain a voltage measured by the measurement device, the measurement device that measures a voltage on a high-voltage distribution line being installed at each of the monitoring points;
- voltage estimation circuitry to estimate, for each of the sections, a voltage drop quantity and a voltage rise quantity in the corresponding one of the sections using the voltage measured by the measurement device and using the measurement value;
- proper voltage range update circuitry to set, for each of the sections, a value obtained by subtracting the voltage rise quantity from an upper limit value of a predetermined tolerance range as an upper limit value of a proper voltage range, and to set, for each of the sections, a value obtained by adding the voltage drop quantity to a lower limit value of the proper voltage range as a lower limit value of the proper voltage range;
- and
- amount-of-control determination circuitry to determine an amount of control to be applied by a voltage controller that controls a voltage of the power system, using the voltage measured by the measurement device and using the proper voltage range of each of the sections, and to issue a command about the amount of control determined to a voltage control device that controls the voltage controller.
2 more elements
A voltage command method for use in a voltage command device, the voltage command method comprising:
- obtaining, for each of sections in a power system, a measurement value of a voltage measured by a voltage measurement device connected to a corresponding one of the sections to measure a voltage at an interconnection point of a consumer, the sections being generated by segmentation between monitoring points, obtaining a measurement result from a measurement device that measures a voltage at one of the monitoring points, and obtaining a voltage measured by the measurement device, the measurement device that measures a voltage on a high-voltage distribution line being installed at each of the monitoring points;
- estimating, for each of the sections, a voltage drop quantity and a voltage rise quantity in the corresponding one of the sections using the voltage measured by the measurement device and using the measurement value;
- setting, for each of the sections, a value obtained by subtracting the voltage rise quantity from an upper limit value of a predetermined tolerance range as an upper limit value of a proper voltage range, and setting, for each of the sections, a value obtained by adding the voltage drop quantity to a lower limit value of the proper voltage range as a lower limit value of the proper voltage range;
- and
- determining an amount of control to be applied by a voltage controller that controls a voltage of the power system, by using the voltage measured by the measurement device and using the proper voltage range of each of the sections, and issuing a command about the amount of control determined to a voltage control device that controls the voltage controller.
2 more elements
A non-transitory storage medium storing a voltage command program for causing a computer system to perform:
- obtaining, for each of sections in a power system, a measurement value of a voltage measured by a voltage measurement device connected to a corresponding one of the sections to measure a voltage at an interconnection point of a consumer, the sections being generated by segmentation between monitoring points, obtaining a measurement result from a measurement device that measures a voltage at one of the monitoring points, and obtaining a voltage measured by the measurement device, the measurement device that measures a voltage on a high-voltage distribution line being installed at each of the monitoring points;
- and
- estimating, for each of the sections, a voltage drop quantity and a voltage rise quantity in the corresponding one of the sections using the voltage measured by the measurement device and using the measurement value;
- setting, for each of the sections, a value obtained by subtracting the voltage rise quantity from an upper limit value of a predetermined tolerance range as an upper limit value of a proper voltage range, and setting, for each of the sections, a value obtained by adding the voltage drop quantity to a lower limit value of the proper voltage range as a lower limit value of the proper voltage range;
- and
- determining an amount of control to be applied by a voltage controller that controls a voltage of the power system, by using the voltage measured by the measurement device and using the proper voltage range of each of the sections, and issuing a command about the amount of control determined to a voltage control device that controls the voltage controller.
3 more elements
Dependencies are inferred from the claim text.