Hi All,
Interested in people's views on which method is better for providing backup protection at a generator for grid faults.
i.e Distance or Voltage controlled Overcurrent ?
Multiple small generators in parallel, each with their own protection relays.
Hi all,
I am seeking some advice on applying ground distance to transformer-feeder circuits. In this particular application, there are two separated circuits running in parallel, one of them also has an underhung circuit from another network.
I am concerned about mutual coupling during earth...
Hi,
I am doing some fault studies on a grid with 66kV/33kV Auto transformers YNa0, solidly earthed. I have their positive sequence impedances, but not any info on zero sequence impedance or X/R ratio. Has anyone had experience with these vector groups and what typical zero seq impedances and...
Hi,
Looking for some help in calculating the 3U0 voltage during single phase to earth fault. I have limited information to begin with and I can't use modelling software as the source is an inverter so the algorithm will not converge :).
I have:
- Nominal L-L Voltage
- Line impedance between...
