ee341_h06_Wi2012_Solution

ee341_h06_Wi2012_Solution - (d) What are the transmission...

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ECE 341 Homework #6 Winter 2012 (For the preparation of the Final Exam, solution provided, no submission is needed) Problem 1: (5.24) of the text book Problem 2: (6.8) of the text book 200
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Problem 3: (6.15) of the text book
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Problem 4 : (2-23 of the textbook) Figure P2-4 shows a power system consisting of a three-phase 480-V 60-Hz generator supplying two loads through a transmission line with a pair of transformers at either end. (a) Sketch the per-phase equivalent circuit of this power system. (b) With the switch opened, find the real power P , reactive power Q , and apparent power S supplied by the generator. What is the power factor of the generator? (c) With the switch closed, find the real power P , reactive power Q , and apparent power S supplied by the generator. What is the power factor of the generator?
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Unformatted text preview: (d) What are the transmission losses (transformer plus transmission line losses) in this system with the switch open? With the switch closed? What is the effect of adding Load 2 to the system? Note: in this problem, p.u values are given based on different base power. Thus, a conversion is needed. Equation 2-60 essentially has two parts: the first part is to calculate the real value of the impedance in ohm by multiplying the original based impedance value. The second part is to divide the real value by a new based impedance which is calculated by the new based voltage and based power. Problem 5: (7.5) of the text book Problem 6: (7.14) of the text book Problem 7: (7.22) of the text book 96.6 320.3 Nm...
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ee341_h06_Wi2012_Solution - (d) What are the transmission...

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