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POWER METERING AND MERGING UNIT CAPABILITIES IN A SINGLE IED

  • US 20100153036A1
  • Filed: 12/12/2008
  • Published: 06/17/2010
  • Est. Priority Date: 12/12/2008
  • Status: Active Grant
First Claim
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1. An intelligent electronic device (IED), comprising:

  • a housing;

    a plurality of inputs received at the housing and receiving representations of current or voltage signals from corresponding first current transformers or potential transformers;

    a power metering unit disposed within the housing, the power metering unit calculating a function that includes a representation of any of the current or voltage signals;

    a merging unit disposed within the housing, the merging unit being configured to combine digital representations of the current or voltage signals into a single set of merged digital samples;

    a memory disposed within the housing, the memory storing the single set of merged digital samples; and

    a microcontroller coupled to the memory.

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