Lecture05

# Lecture05 - Page 1 Fundamentals of Power Systems Lecture 5...

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Unformatted text preview: Page 1 Fundamentals of Power Systems Lecture 5 1 Voltage Regulation 2, 2, 2, 100 no load full load full load V V percent regulation V Â¡ Â¡ Â¡ Â¡ u Definition: 100 2 2 1 u Â¡ V V a V regulation percent Practical Equation: Fundamentals of Power Systems Lecture 5 2 Voltage Regulation V 2 I 2 I 2 R eq_2 I 2 jX eq_2 V 1 / a T Negative Regulation V 2 I 2 I 2 R eq_2 I 2 jX eq_2 V 1 / a T Maximum Regulation V 2 I 2 I 2 R eq_2 I 2 jX eq_2 V 1 / a T Positive Regulation V 2 I 2 I 2 R eq_2 I 2 jX eq_2 V 1 / a T Zero Regulation Page 2 Fundamentals of Power Systems Lecture 5 3 Transformer Efficiency 1 2 P P power input power output K Definition: core copper losses losses P P P P P P P P P P Â¡ Â¡ Â¡ Â¢ 2 2 2 2 1 1 K Practical Equation: Per Unit Equation: pu eq pu pu core pu pu R S P S S Â¢ Â¢ Â¢ Â¢ Â¢ Â¡ Â¡ 2 2 2 2 cos cos I I K Fundamentals of Power Systems Lecture 5 4 Example: Voltage regulation See Book, Example 3-5, p. 119 Page 2 Fundamentals of Power Systems Lecture 5 3 Transformer Efficiency 1 2 P P power input power output K Definition: core copper losses losses...
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Lecture05 - Page 1 Fundamentals of Power Systems Lecture 5...

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