chapter 8 bee3143:power system analysis- symmetrical...

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CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical Components Expected Outcomes Able to solve unbalanced fault analysis

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Page 1: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

CHAPTER 8

BEE3143:POWER SYSTEM ANALYSIS- Symmetrical Components Expected Outcomes Able to solve unbalanced fault analysis

Page 2: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

Introduction

• 3 types of unbalanced faults occurred at transmission lines: 1) single line to ground fault 2) line-to-line fault 3) double line to ground fault • causes unbalanced circuits, so cannot used single line diagram simplifies solution that used in balanced 3Φ fault analysis • symmetrical components method is used to solve the unbalanced fault problem • symmetrical components allow unbalanced phase quantities such as currents and voltages to be replaced by three separate balanced symmetrical components • Any unsymmetrical set of 3Φ voltages or currents could be broke down into three symmetrical sets of balanced 3Φ components

Page 3: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

Fundamental of Symmetrical Components

Page 4: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

...Fundamental of Symmetrical Components

Page 5: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

...Fundamental of Symmetrical Components

Page 6: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

...Fundamental of Symmetrical Components

Page 7: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

...Fundamental of Symmetrical Components

Page 8: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

...Fundamental of Symmetrical Components

Page 9: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

...Fundamental of Symmetrical Components

Page 10: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

...Fundamental of Symmetrical Components

Page 11: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

Example

• Obtain the symmetrical components of a

set of unbalanced currents:

Page 12: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

Solution

Page 13: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred

…Solution

Page 14: CHAPTER 8 BEE3143:POWER SYSTEM ANALYSIS- Symmetrical …ocw.ump.edu.my/pluginfile.php/1339/mod_resource/content/... · 2015. 12. 31. · • 3 types of unbalanced faults occurred