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  • Users: protoslash
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  1. protoslash

    Healthy Phase Voltage Sag During Fault

    Hi I have an effective grounded 500kV system. If I apply a single phase to ground fault, I expect the fault phase to ground voltage to be 0 at the point of the fault, while the other two healthy phase to ground voltage to increase (amount affected by system grounding). However the simulation...
  2. protoslash

    Parallel Feeders with 30 Degrees Phase Shift

    A theoretical question. If I have 2 feeders supplied from 2 different substations with different vector group. These 2 feeders are 30 degrees apart, what happens if I close a tie switch between the 2 feeders? The instantaneous voltage is different so there should be fault at the tie switch...
  3. protoslash

    line to line single phase transformer connection

    Hi I have two identical distribution single phase transformers. If the first one HV bushings are connected to phase A and B, and the second one is connected to phase B and A. Then does that mean the loading current flow on the feeder phase A and B are 0 (cancel out)? thanks
  4. protoslash

    non load break switch

    We have a simple non load break switch on a 44kV line (circuit switcher, in-line disconnect w/e you call it). The switch is energized but not carrying any load downstream. My understanding is that the switch can be opened manually as it is technically not breaking load current. However, when...

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