When considering DC short circuit faults of an overhead line system occuring immediately outside one of the substations, contributions from the adjacent substations should be taken into account.
If I take these as three RL circuits, i.e the local, and the two adjacent circuits with
1. R1 & L1...
Hi All,
Still doing my system fault level calculations. I am stuck in trying to work out the equivalent inductances of two RL circuits. One circuit has Req & Leq and the other has Rsb & Lsb.
From previous work, I have the formula for the equivalent inductance Lp = (Rp/Req)^2 * Leq +...
We often see the term commutating reactance associating with rectifier transformers.
Can someone please tell me if that is just simply the transformer impedance? If not, can we derive the Tx impedance from the commutating reactance?
Thanks in advance!
Please can somebody tell me if there are usually any differences between the positive/negative and zero sequence impendances for HV power cables?
I need to carry out a short circuit analysis for a HV network and the cable data I am provided with are the 'Maximum a.c resistance of conductor...
I have been asked to calculate the fault current that flows through the armour of a power cable. Can someone please tell me how this is differ from the traditional line-earth fault calculations?
Does anyone know how to calculate the loop inductances of some DC overhead line railway system. i.e +ve supplied by overhead wires and -ve return via the rails.
