Metering device with control functionality and method thereof
First Claim
1. A metering device operating on a secondary analog waveform output by an external transformer assembly receiving a primary waveform, the metering device comprising:
- an internal transformer, wherein the internal transformer receives the secondary waveform and generates a stepped-down output signal;
first biasing circuitry, wherein the first biasing circuitry receives the output signal from the internal transformer and generates a first digital signal within a first range, the first digital signal having a value proportional to the output signal;
second biasing circuitry, wherein the second biasing circuitry receives the output signal from the internal transformer and generates a second digital signal within a second range, the second digital signal having a value proportional to the output signal; and
a processor assembly in communication with the first biasing circuitry and the second biasing circuitry, wherein the processor assembly executes first operational software for performing a first function having first biasing requirements using the first digital signal to generate a first output and wherein the processor assembly executes second operational software for a second function having second biasing requirements using the second digital signal to generate a second output, the first operational software operating within the first range and the second operational software operating within the second range.
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Abstract
A metering device of a power substation and method are provided for operating on a secondary analog waveform output by a transformer assembly receiving a primary waveform. The method includes stepping down the secondary waveform and generating a corresponding output signal; operating on the corresponding output signal for generating a corresponding first digital signal having a value proportional to the corresponding output signal and within a first range; and operating on the corresponding output signal for generating a corresponding second digital signal having a value proportional to the corresponding output signal and within a second range. The method further includes processing the first digital signal and outputting a corresponding first output signal; processing the second digital signal and outputting a corresponding second output signal; processing the first and second output signals; and generating output corresponding to the processing of the first and second output signals.
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Citations
37 Claims
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1. A metering device operating on a secondary analog waveform output by an external transformer assembly receiving a primary waveform, the metering device comprising:
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an internal transformer, wherein the internal transformer receives the secondary waveform and generates a stepped-down output signal; first biasing circuitry, wherein the first biasing circuitry receives the output signal from the internal transformer and generates a first digital signal within a first range, the first digital signal having a value proportional to the output signal; second biasing circuitry, wherein the second biasing circuitry receives the output signal from the internal transformer and generates a second digital signal within a second range, the second digital signal having a value proportional to the output signal; and a processor assembly in communication with the first biasing circuitry and the second biasing circuitry, wherein the processor assembly executes first operational software for performing a first function having first biasing requirements using the first digital signal to generate a first output and wherein the processor assembly executes second operational software for a second function having second biasing requirements using the second digital signal to generate a second output, the first operational software operating within the first range and the second operational software operating within the second range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A metering processor assembly for executing metering functions operating on different biasing conditions, comprising:
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an input for receiving a single analog waveform from an external transformer; first and second biasing circuitry coupled to the input, wherein each of the first and second biasing circuitry receives the same single analog waveform; a first processor in communication with the first biasing circuitry operating within a first signal range, wherein the first processor receives an output from the first biasing circuitry, executes first operational software for performing a first function using the output from the first biasing circuitry and generates a first output; and a second processor in communication with the second biasing circuitry operating within a second signal range, wherein the first processor receives an output from the second biasing circuitry, executes second operational software for performing a second function using the output from the second biasing circuitry and generates a second output, said second signal range is at least two times larger than the first signal range. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of outputting a signal through a metering device, comprising:
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receiving a transformer output at first biasing circuitry and second biasing circuitry, the first biasing circuitry operating within a first signal range, the second biasing circuitry operating within a second signal range; generating a first digital signal corresponding to the transformer output at the first biasing circuitry; generating a second digital signal corresponding to the transformer output at the second biasing circuitry; performing a first function on the first digital signal at a first processor using a first set of operational software; performing a second function on the second digital signal at a second processor using a second set of operational software; and generating an output corresponding to the performing a first function and performing a second function. - View Dependent Claims (34, 35, 36, 37)
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Specification