Hello everyone,
I am looking for a controller (PLC-like) for a power substation. It must have:
1.- analog input for three phase current (5A) and voltaje (120V), coming from substation current and voltaje transformers, as most protective relaying equipment has.
2.- 4-20 mA analog input (PT100...
Hello people.
@prc: The article's details are:
L. Johnston, N. Tweed, D. Ward and J. Burke. An Analysis of VEPCO's 34.5 kV Distribution Feeder Faults as Related to Through Fault Failures of Substation Transformers. IEEE Transactions on Power Aparatus and Systems. Vol. PAS-97, No. 5, Sept/Oct...
Hello magoo2 and dpc and thanks for your answers. I just got a copy of the Vepco+GE paper, it seems there are some good ideas there inside.
I have been looking to the IEEE Std C57.109-1993 guide for Transformer Through-Falt-Current Duration and our protection scheme provides good triping times...
Hello everyone.
Currently, we are feeding a distribution network (13.8 kV) through a 33 MVA 110/13.8 kV transformer. Due to the high magnitud of the line short circuit current in the 13.8 kV network (about 8kA), we are looking for a relationship between transformer aging and -for example- the...
Hi there!
Thanks everybody! I agree that a valid answer to the problem is given by basic network equations, as pointed out above. Initially I expected something more complex, as an state observer for example. We will be running some tests.
Thanks again.
Hello Everyone,
We are developing some control applications in the local terminal of a 110 kV transmission line. The control requires to know the voltage in the remote terminal of the transmission line. We need to compute (or estimate) that remote terminal voltage, as we d like to avoid the...
