mesutphen
Electrical
- Nov 13, 2009
- 35
Are power triangles proportional through per unit?
I'm trying to calculate a neutral grounding transformer's p.u. reactance and resistance. I've been given the amps, watts, and volts from the transformer impedance test, and I know the rated voltage, so I can calculate the p.u. impedance. Since I have the watts and I can calculate the VA, I can set up a power triangle.
Can I set up a ratio to say (calculated VA) divided by (p.u. impedance) equals (watts) divided by (p.u. resistance)? And subsequently, (calculated VA) divided by (p.u. impedance) equals (calculated VAR) divided by (p.u. reactance)?
Or is there some other way that I can calculate reactance and resistance?
I'm trying to calculate a neutral grounding transformer's p.u. reactance and resistance. I've been given the amps, watts, and volts from the transformer impedance test, and I know the rated voltage, so I can calculate the p.u. impedance. Since I have the watts and I can calculate the VA, I can set up a power triangle.
Can I set up a ratio to say (calculated VA) divided by (p.u. impedance) equals (watts) divided by (p.u. resistance)? And subsequently, (calculated VA) divided by (p.u. impedance) equals (calculated VAR) divided by (p.u. reactance)?
Or is there some other way that I can calculate reactance and resistance?