hw2s - 1 EE341 Homework #2 Solution Problem 1: Consider a...

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Unformatted text preview: 1 EE341 Homework #2 Solution Problem 1: Consider a 3- distribution system as shown below: Compute the following: 1) The source voltage V S , if V R is to be maintained at 2.2 kV. 2) The source current and power factor at the source. 3) The total complex power supplied by the source. 4) How much reactive power should be connected to the source bus for obtaining unity power factor at the source bus? 5) Write Matlab code to solve the above problems. Please submit the Matlab code and the results. Solution: a) load #1: kVA j S o 87 . 36 33 . 33 ) 8 . 1 8 . ( 3 100 2 , 1 = + = load #2: kVA j S o 79 . 31 33 . 33 ) 85 . 1 85 . ( 3 85 . / 85 2 , 2 = + = load #3: kVA j S o 41 . 41 20 ) 75 . 1 75 . ( 3 60 2 , 3 = = b) Single phase equivalent circuit is shown as below: Source bus Load #1: 100 kVA p.f. = 0.8 lagging Load #2: 85 kW p.f. = 0.85 lagging Load #3: 60 kVA p.f. = 0.75 leading S V R V j5 j2 , S V , 1 S , 2 S , 3 S 1 I 2 I 3 I S I , R V 2 line Z 1 line Z 2 V V o R 2 . 1270 3 2200 , = = A V S I o R 41 . 41 75 . 15 2 . 1270 41 . 41 10 20 * 3 * , , 3 3 = = = V j Z I V V line R 2 3 , , 2 08 . 1 6 . 1249 2 41 . 41 75 . 15 2 . 1270 = + = + =...
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This note was uploaded on 05/01/2008 for the course ECE 341 taught by Professor Keyhani during the Spring '08 term at Ohio State.

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hw2s - 1 EE341 Homework #2 Solution Problem 1: Consider a...

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