INTELLIGENT ELECTRONIC DEVICE WITH ENHANCED POWER QUALITY MONITORING AND COMMUNICATIONS CAPABILITY

摘要

An intelligent electronic device IED has enhanced power quality and communications capabilities. The IED can perform energy analysis by waveform capture, detect transient on the front-end voltage input channels and provide revenue measurements. The IED splits and distributes the front-end input channels into separate circuits for scaling and processing by dedicated processors for specific applications by the IED. Front-end voltage input channels are split and distributed into separate circuits for transient detection, waveform capture analysis and revenue measurement, respectively. Front-end current channels are split and distributed into separate circuits for waveform capture analysis and revenue measurement, respectively.

主权项

1. An intelligent electronic device (IED) for determining parameters of an electrical distribution system, the IED comprising:
at least one sensor for sensing the at least one input voltage and current channels of the electrical distribution system, at least one input channel for receiving AC voltages and currents from the at least one sensor including at least one analog to digital converter for outputting digitized signals, the at least one input channel including a first input channel for transient detection sampling, a second input channel for waveform capture sampling and a third input channel for revenue measurement sampling, the at least one analog to digital converter for each of the at least one input channels having a different sampling rate, a field programmable gate array (FPGA) coupled to each of the at least one input channels for routing the digitized signals to a processing system, the processing system including a first digital signal processor for processing the digitized signals from the transient detection sampling input channel, the waveform capture sampling input channel, and the revenue measurement sampling input channel and a central processing unit for processing data from the first digital signal processor, the field programmable gate array (FPGA) configured to incorporate a first dual port memory for transferring data between the first digital signal processor and the central processing unit.