Expandable intelligent electronic device
First Claim
1. An IED comprising:
- a power monitoring circuit operative to monitor a voltage and a current of a portion of a power distribution system and generate a first analog signal representative of said voltage and a second analog signal representative of said current;
a processor coupled with said power monitoring circuit, said processor comprising an analog to digital converter operative to convert said first and second analog signals to first and second digital signals representative thereof, said processor operative to implement first power management functionality and generate first power management data;
at least one of a display and a communications interface coupled with said processor and operative to communicate said first power management data external to said IED;
an interface coupled with said processor and operative to receive a power supply; and
wherein said processor is operative to compensate a calibration setting of said IED to account for variations in said conversion of said first and second analog signals to said first and second digital signals, wherein said variations are due to a frequency and amplitude of said first and second analog signals.
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Abstract
An intelligent electronic device (IED) includes a base module having a power monitoring circuit operative to monitor a parameter of a portion of a power distribution system and generate an analog signal representative thereof. The base module also includes a processor coupled with the power monitoring circuit, the processor having an analog to digital converter operative to convert the analog signal to a digital signal representative thereof. The processor operates to implement a first power management functionality and generate first power management data. At least one of a display and a communications interface couple with the processor and communicate the first power management data external to the IED. A first interface couples with the processor and the communications interface. The first interface operates to receive a first external function module. The first external function module includes a second power management functionality, where the first interface further facilitates implementation of the second power management functionality.
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Citations
31 Claims
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1. An IED comprising:
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a power monitoring circuit operative to monitor a voltage and a current of a portion of a power distribution system and generate a first analog signal representative of said voltage and a second analog signal representative of said current; a processor coupled with said power monitoring circuit, said processor comprising an analog to digital converter operative to convert said first and second analog signals to first and second digital signals representative thereof, said processor operative to implement first power management functionality and generate first power management data; at least one of a display and a communications interface coupled with said processor and operative to communicate said first power management data external to said IED; an interface coupled with said processor and operative to receive a power supply; and wherein said processor is operative to compensate a calibration setting of said IED to account for variations in said conversion of said first and second analog signals to said first and second digital signals, wherein said variations are due to a frequency and amplitude of said first and second analog signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An IED comprising:
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a power monitoring circuit operative to monitor a parameter of a portion of a power distribution system and generate an analog signal representative thereof;
an analog to digital converter coupled with said power monitoring circuit, said analog to digital converter operative to convert said analog signal to a digital signal representative thereof;a processor coupled with said analog to digital converter and operative to implement power management functionality and generate power management data; at least one of a display and a communications interface coupled with said processor and operative to communicate said power management data external to said IED; and wherein said processor is operative to compensate a calibration setting of said IED to account for variations in said conversion of said first and second analog signals to said first and second digital signals based on the difference in phase shift between said conversion of said first analog signal to said first digital signal and said conversion of said second analog signal to said second digital signal. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification