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Unformatted text preview: ELEN 3441 – Fundamentals of Power Engineering Spring 2011 Page | 2 2.4. (25 pt.) Find the magnitudes and angles of each line and phase voltage and current on the load shown in Figure 2.2. Figure 2.2 2.5. (25 pt.) Figure 2.3 shows a one-line diagram of a small 480 V distribution system in a plant. An engineer working at the plant needs to calculate the current that will be drawn from the power source with and without the capacitor bank switched into the system. For the purposes of these calculations, the engineer assumes zero impedances for the lines. Figure 2.3 a) If a switch is open, find the real, reactive, and apparent powers in the system; find the total current supplied to the distribution system from the power source. b) Repeat the same calculations as in a) if the switch is closed. c) What happened to the total current supplied to the power system if the switch is closed? Why?...
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- Spring '10
- Power, Distribution system, Electric power transmission, Electricity distribution