Calculation of protection setting for two phase PT for railway
Calculation of protection setting for two phase PT for railway
(OP)
Hello! I have to calculate a overcurrent protection of one two phase power transformer. For three phase calculation is not problem, but may be in two phase there is something specific. Is there someone who knows how to do the calculation. I found one document of Areva but there is a calculation example only for overhead lines for rail.






RE: Calculation of protection setting for two phase PT for railway
Not everyone here is familiar with railway systems. But we might be able to contribute some insights into the special case of symmetrical components or other math involved.
RE: Calculation of protection setting for two phase PT for railway
It may make a difference.
How about grounding?
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Calculation of protection setting for two phase PT for railway
Using grounded center tap, you can build the line for e.g. 65 kV to ground and still have the transmission capability of a 130 kV line.
Settings are the same as for a singe phase line.
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Calculation of protection setting for two phase PT for railway
RE: Calculation of protection setting for two phase PT for railway
------------------------
It may be like this in theory and practice, but in real life it is completely different.
The favourite sentence of my army sergeant
RE: Calculation of protection setting for two phase PT for railway