Symmetrical Fault Analysis

Discussion in 'Homework Help' started by jegues, Nov 23, 2013.

  1. jegues

    Thread Starter Well-Known Member

    Sep 13, 2010
    See figure below for problem statement.


    See the attached PDF for my attempt at the problem.

    I'm confident with my answers for part (a), so you don't need to look that over if you don't want to, but I am unsure about my results for part (b).

    My calculations are saying that the post fault line current from bus 1 to bus 2 is 0, which doesn't seem very reasonable.

    I would expect the fault current to flow into the fault from all directions, dragging some current through though the bus sectionalizing reactor Xx.

    Can someone check my work for part (b)?

    Start at the bottom of P2 and onwards.

    Thanks again!