Voltage conservation using advanced metering infrastructure and substation centralized voltage control
DC CAFCFirst Claim
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1. A voltage control and energy conservation system for an electric power transmission and distribution grid configured to supply electric power to a plurality of user locations, the system comprising:
- a substation including a supply point configured to supply electrical power to a plurality of user locations;
a plurality of sensors, wherein each sensor is located at a respective one of a plurality of distribution locations on the distribution grid at or between the supply point and at least one of the plurality of user locations, and wherein each sensor is configured to sense a voltage of the supplied electric power at the respective distribution location and to generate measurement data based on the sensed voltage;
a voltage controller configured to receive measurement data from each sensor of a subset of the plurality of sensors, wherein the subset includes more than one and substantially fewer than all of the plurality of sensors, and to generate an energy delivery parameter based on a comparison of the measurement data received from the subset to a controller target voltage band;
a voltage adjusting device configured to adjust a voltage of the electric power supplied at the supply point based on the energy delivery parameter;
wherein the energy delivery parameter is generated such that the voltage at each user location remains within a user target voltage band, the user target voltage band being a lower band of a safe nominal operating range;
wherein at least one other sensor of the plurality of sensors that is not included in the subset is further configured to send a respective reporting signal to the voltage controller when the voltage sensed by the sensor is determined to be outside of a respective sensor target voltage band; and
wherein the voltage controller is further configured to add to the subset the at least one other sensor in response to receiving the reporting signal indicating that the voltage sensed by the at least one other sensor is outside of the respective sensor target voltage band.
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Abstract
A voltage control and conservation (VCC) system is provided, which includes three subsystems, including an energy delivery (ED) system, an energy control (EC) system and an energy regulation (ER) system. The VCC system is configured to monitor energy usage at the ED system and determine one or more energy delivery parameters at the EC system. The EC system may then provide the one or more energy delivery parameters to the ER system to adjust the energy delivered to a plurality of users for maximum energy conservation.
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Citations
34 Claims
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1. A voltage control and energy conservation system for an electric power transmission and distribution grid configured to supply electric power to a plurality of user locations, the system comprising:
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a substation including a supply point configured to supply electrical power to a plurality of user locations; a plurality of sensors, wherein each sensor is located at a respective one of a plurality of distribution locations on the distribution grid at or between the supply point and at least one of the plurality of user locations, and wherein each sensor is configured to sense a voltage of the supplied electric power at the respective distribution location and to generate measurement data based on the sensed voltage; a voltage controller configured to receive measurement data from each sensor of a subset of the plurality of sensors, wherein the subset includes more than one and substantially fewer than all of the plurality of sensors, and to generate an energy delivery parameter based on a comparison of the measurement data received from the subset to a controller target voltage band; a voltage adjusting device configured to adjust a voltage of the electric power supplied at the supply point based on the energy delivery parameter; wherein the energy delivery parameter is generated such that the voltage at each user location remains within a user target voltage band, the user target voltage band being a lower band of a safe nominal operating range; wherein at least one other sensor of the plurality of sensors that is not included in the subset is further configured to send a respective reporting signal to the voltage controller when the voltage sensed by the sensor is determined to be outside of a respective sensor target voltage band; and wherein the voltage controller is further configured to add to the subset the at least one other sensor in response to receiving the reporting signal indicating that the voltage sensed by the at least one other sensor is outside of the respective sensor target voltage band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 33)
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18. A method for controlling electrical power supplied to a plurality of distribution locations located at or between a supply point and at least one user location, each of the plurality of distribution locations including at least one sensor configured to sense a voltage of the supplied electric power at the respective distribution location and generate measurement data based on the sensed voltage, the method comprising:
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receiving measurement data from a subset of the plurality of sensors, wherein the subset includes more than one but substantially fewer than all of the plurality of sensors; and adjusting a voltage at the supply point based on a comparison of the measurement data received from the subset to at least one controller target voltage band, wherein voltage at the supply point is adjusted such that a voltage at each user location remains within a user target voltage band, the user target voltage band being a lower band of a safe nominal operating range; receiving a reporting signal indicating that a voltage that is sensed by another sensor that is not part of the subset is outside of a respective sensor target component band; and in response to receiving the reporting signal indicating that the voltage sensed by the another sensor is outside of the respective sensor target component band, adding the another sensor to the subset. - View Dependent Claims (19, 20, 21, 22, 23, 24, 34)
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25. A controller for an energy conservation system for an electric power transmission and distribution grid configured to supply electric power from a supply point to a plurality of user locations, the controller comprising:
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at least one processor configured to; receive measurement data that is based on a measured component of electric power from each sensor of a subset of a plurality of sensors, wherein the plurality of sensors are located at respective distribution locations on the distribution grid at or between the supply point and at least one of the plurality of user locations, and wherein the subset includes more than one and substantially fewer than all of the plurality of sensors; generate an energy delivery parameter based on a comparison of a controller target band to the measurement data received from the sensors in the subset wherein the energy delivery parameter is generated such that a voltage at each user location remains within a user target voltage band, the user target voltage band being a lower band of a safe nominal operating range; and provide the energy delivery parameter to an adjusting device configured to adjust the electric power supplied at the supply point based on the energy delivery parameter; and wherein the controller is configured to receive a signal indicating that the measured component of electric power sensed by at least one other sensor of the plurality of sensors is outside of a sensor target component band, and wherein the controller is further configured to add to the subset the at least one other sensor in response to receiving the signal indicating that the measured component of electric power sensed by the at least one other sensor is outside of the sensor target component band. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification