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    Powerflow Database

    PFDB is a tool designed for assembling a series of powerflow base cases for a large region from data submitted by its members. The tool is currently being used in the annual effort of developing NERC/ERAG US/Canada Eastern Interconnection (EI) base powerflow cases.


    • Extraction and merging of powerflow data by control areas from different powerflow cases
    • Settlement of area interchanges and tie-lines in merged case
    • Check of powerflow data among whole series for specific model year
    • Comparison of powerflow cases
    • Check of powerflow cases for data errors according to NERC/ERAG/MMWG requirements, including:
      • Duplicate bus names
      • Bus, owner, zone out of range
      • Bus voltage out of range
      • Incorrect generator type code
      • Missing generator on generator bus
      • Unrealistic PMAX, PMIN, QMAX, and QMIN
      • Generator output out of range
      • Incorrect generation share
      • Generator step-up transformer tap setting out of range
      • Shunts with small control voltage bands
      • Shunts without block 1 steps
      • Inconsistent transformer data
      • High resistance branches
      • Branch rating errors
      • 3-winding transformer rating errors
      • Branch overloads

    Please contact us for more information