Voltage regulation at a remote location using measurements from a remote metering device
First Claim
1. A system for regulating a remote voltage of an electric power delivery system, comprising:
- a voltage regulating device operatively coupled to a local portion of the electric power delivery system and configured to regulate the remote voltage by selecting among a plurality of taps on a transformer;
a metering device in communication with a remote portion of the electric power delivery system to obtain remote power system data, including a transmit module for transmitting the remote power system data; and
,a voltage regulator control in communication with the voltage regulating device and the metering device, comprising;
an input for receiving the remote power system data from the metering device; and
,a microcontroller in operational communication with the input for receiving the remote power system data comprising a voltage regulation module forcalculating an updated line impedance using a ratio of the remote power system data including a remote measured voltage to a remote estimated voltage;
updating the set line impedance with the updated line impedance; and
,producing a tap change command for the voltage regulating device upon detecting an excursion of the remote power system data from an in-band area to an out-of-band area.
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Accused Products
Abstract
Regulation of a remote load center voltage from a local location of a voltage regulator and a voltage regulator control using voltage measurements from the remote load center obtained using a metering device at the load center in communication with the voltage regulator control. The metering device may obtain remote voltage information at the load center and communicate such to the voltage regulator control using a direct communications line, a wide area network, or the like. The communications may include electrical (e.g. copper cable), light (e.g. infrared over fiber optics), radio frequency, or the like. The voltage regulator control may be configured to use local measurements and a line drop compensation algorithm in the event that the remote voltage information becomes unavailable.
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Citations
37 Claims
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1. A system for regulating a remote voltage of an electric power delivery system, comprising:
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a voltage regulating device operatively coupled to a local portion of the electric power delivery system and configured to regulate the remote voltage by selecting among a plurality of taps on a transformer; a metering device in communication with a remote portion of the electric power delivery system to obtain remote power system data, including a transmit module for transmitting the remote power system data; and
,a voltage regulator control in communication with the voltage regulating device and the metering device, comprising; an input for receiving the remote power system data from the metering device; and
,a microcontroller in operational communication with the input for receiving the remote power system data comprising a voltage regulation module for calculating an updated line impedance using a ratio of the remote power system data including a remote measured voltage to a remote estimated voltage; updating the set line impedance with the updated line impedance; and
,producing a tap change command for the voltage regulating device upon detecting an excursion of the remote power system data from an in-band area to an out-of-band area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A voltage regulator control apparatus for controlling tap position change operation of a voltage regulator, the voltage regulator configured to operatively couple to a local position of an electric power delivery system to regulate a remote voltage at a remote position of the electric power delivery system, the apparatus comprising:
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a remote input for receiving remote electric power information from the remote position of the electric power delivery system; and a microcontroller operatively coupled to the remote input and including a voltage regulation module for receiving the remote electric power information, calculating an updated line impedance using a ratio of the remote electric power information including a remote measured voltage to a remote estimated voltage, updating the set line impedance with the updated line impedance, and, comparing the remote electric power information against predetermined thresholds to determine if the remote position of the electric power delivery system exhibits an out-of-band condition, and creating a tap position change command when remote position of the electric power delivery system exhibits the out-of-band condition. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for regulating a voltage at a remote location of an electric power delivery system using electric power system information from the remote location and a voltage regulator at a local location of the electric power delivery system, comprising:
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receiving remote electric power system information from the remote location by an intelligent electronic device at the local location in operational communication with a voltage regulator; calculating an updated line impedance using a ratio of the remote electric power system information including a remote measured voltage to a remote estimated voltage; updating the set line impedance with the updated line impedance; and
,the intelligent electronic device comparing the remote electric power system information against a first threshold to detect a first out-of-band condition at the remote location; and
,the intelligent electronic device upon detecting the first out-of-band condition, sending a command to the voltage regulator to change a tap position to regulate the remote voltage. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification