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  1. user1011

    Hand Calculation of Fault Currents involving Inverter-based Resources

    Hello, Nowadays, the inverter-based resources short-circuit characteristics are expressed in terms of Voltage-controlled current source (VCCS) data format on many short-circuit programs. VCCS data is a table comprising positive sequence voltage, inverter current and power factor angle values...
  2. user1011

    How to Draw Transformer BIL/Surge Arrester Coordination Plot

    Hello everyone, I'm trying to create a transformer insulation - surge arrester protective level coordination plot similar to the one below. My questions are: a. Where do i find the duration of Surge Arrester Front of Wave (FOW), Lightning Protective Level (LPL) and Switching Surge Protective...
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