Unformatted text preview: lineline voltages.) Wye Delta Line impedance: 1+j1 ohm Vbase1=480 V Vbase2=100,000 V Three phase wyedelta transformer Delta Wye Three phase deltawye transformer Load 0.082+j0.082 ohm Vbase3=480 V Sbase2=2000 kVA Sbase1=2000 kVA Sbase2=2000 kVA Three phase generator 1) Calculate the perunit values of the line impedance, load impedance, and load end voltage; (2 pts.) 2) Sketch the perphase perunit equivalent circuit of this power system; (1 pts.) 3) Calculate the power factor of the system; (1 pts.) 4) Calculate the efficiency of the system; (2 pts.) 5) If you are asked to increase the load side power factor to 1 by adding an additional component in parallel with the existing load in the circuit you sketched in 2), what component would it be? a) Sketch your new circuit; and b) Show the calculations of the value of the additional component. (2 pts.) Assume the system frequency is 60 Hz ....
View
Full Document
 Winter '08
 Keyhani
 Alternating Current, pts, Threephase electric power, Delta Wye

Click to edit the document details