VOLTAGE MONITORING IN AN ADVANCED METERING INFRASTRUCTURE
First Claim
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1. A method for monitoring voltage in an electrical power transmission infrastructure, comprising:
- establishing a plurality of threshold values;
performing a plurality of instantaneous voltage measurements at a utility consumer meter;
determining for a measurement period an average voltage value from the plurality of instantaneous voltage measurements performed at the utility consumer meter; and
comparing such average voltage value to the plurality of threshold values to determine if such average voltage value respectively falls outside of any of the plurality of threshold values.
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Abstract
Disclosed are apparatus and methodology for monitoring voltage at individual utility meters in a distribution system together with voltage levels at a substation associated with the distribution system. Voltage measurements are made over a predetermined time interval and compared to plural sets of threshold values.
16 Citations
20 Claims
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1. A method for monitoring voltage in an electrical power transmission infrastructure, comprising:
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establishing a plurality of threshold values; performing a plurality of instantaneous voltage measurements at a utility consumer meter; determining for a measurement period an average voltage value from the plurality of instantaneous voltage measurements performed at the utility consumer meter; and comparing such average voltage value to the plurality of threshold values to determine if such average voltage value respectively falls outside of any of the plurality of threshold values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for monitoring voltage in an electrical power transmission infrastructure, said system comprising:
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a utility consumer meter configured to perform a plurality of instantaneous voltage measurements; a substation meter located upstream of said utility consumer meter, said substation meter configured to generate voltage quality data for the associated electrical power transmission infrastructure; and a voltage monitoring center in communication with said utility consumer meter and said substation meter; wherein said utility consumer meter is further configured to determine an average voltage value from said plurality of instantaneous voltage measurements for a measurement period, to compare said average voltage value to a plurality of threshold values, and to determine if said average voltage value respectively falls outside of any of said plurality of threshold values. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for monitoring voltage in an electrical power transmission infrastructure associated with a communications network, comprising:
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establishing a plurality of threshold values Vmax1, Vmin1, Vmax2, and Vmin2; performing a plurality of instantaneous voltage measurements Vinst at a utility consumer meter for a measurement period; determining an average voltage value for the measurement period at the utility consumer meter from the plurality of instantaneous voltage measurements; determining a minimum voltage value Vlow by setting an initial value of Vlow to a nominal voltage value;
comparing each instantaneous voltage measurement Vinst to Vlow, and setting Vlow equal to the instantaneous voltage measurement Vinst if the instantaneous voltage measurement Vinst is less than Vlow;determining a maximum voltage value Vhigh by setting an initial value of Vhigh to the nominal voltage value, comparing each such instantaneous voltage measurement Vinst to Vhigh, and setting Vhigh equal to the instantaneous voltage measurement Vinst if the instantaneous voltage measurement Vinst is greater than Vhigh; at the end of the measurement period, comparing the average voltage value respectively to each of the plurality of threshold values; triggering a first threshold event if the average voltage value is greater than Vmax1 or less than Vmin1, such triggering of such first threshold event including logging an event in a history log stored at an associated utility consumer meter; and triggering a second threshold event if the average voltage value is greater than Vmax2 or less than Vmin2, such triggering of such second threshold event including sending an exception alarm over the communications network. - View Dependent Claims (20)
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Specification