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IMPACTS of POWER SYSTEM-TIED DISTRIBUTED GENERATION on the PERFORMANCE of PROTECTION SYSTEMS Terver T

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IMPACTS of POWER SYSTEM-TIED DISTRIBUTED GENERATION on the PERFORMANCE of PROTECTION SYSTEMS Terver T University of Texas at Tyler Scholar Works at UT Tyler Electrical Engineering Theses Electrical Engineering Fall 12-11-2017 IMPACTS OF POWER SYSTEM-TIED DISTRIBUTED GENERATION ON THE PERFORMANCE OF PROTECTION SYSTEMS Terver T. Maor University of Texas at Tyler Follow this and additional works at: https://scholarworks.uttyler.edu/ee_grad Part of the Power and Energy Commons Recommended Citation Maor, Terver T., "IMPACTS OF POWER SYSTEM-TIED DISTRIBUTED GENERATION ON THE PERFORMANCE OF PROTECTION SYSTEMS" (2017). Electrical Engineering Theses. Paper 34. http://hdl.handle.net/10950/625 This Thesis is brought to you for free and open access by the Electrical Engineering at Scholar Works at UT Tyler. It has been accepted for inclusion in Electrical Engineering Theses by an authorized administrator of Scholar Works at UT Tyler. For more information, please contact [email protected]. IMPACTS OF POWER SYSTEM-TIED DISTRIBUTED GENERATION ON THE PERFORMANCE OF PROTECTION SYSTEMS. by Terver Maor A thesis Submitted in Partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering Department of Electrical Engineering Hassan El-Kishky, Ph.D., P.E. Committee Chair College of Engineering The University of Texas at Tyler December 2017 Acknowledgements I would like to thank my advisor, Dr. Hassan El-Kishky for his unwavering support, encouragement and guidance during this long but worthy research to satisfy the condition for my degree. I am particularly indebted to your patience in accommodating my work schedule and part-time research into your tight multiple responsibilities that range from administration, teaching, researching etc. I hope that you will continue to support me even after this stage as I embark on my independent research activities. I also wish to extend my gratitude to my thesis committee members, Dr. David Beams and Dr. Mukul Shirvaikar for accepting to serve on the committee on such a short notice. I am greatly appreciative of your kind guidance, diligent and constructive criticism of my thesis work. Your kind and patient directives helped me view several concepts from different perspectives. May your work continue to be of more help to other students under your guidance. Table of Contents Table of Figures ............................................................................................................................................ iv List of Tables ............................................................................................................................................... vii Chapter One .................................................................................................................................................. 1 1.1 Introduction .................................................................................................................................. 1 1.2 Power system Topology ................................................................................................................ 3 1.2.1 Radial Distribution System .................................................................................................... 4 1.2.2 Loop Distribution System ...................................................................................................... 5 1.3 Power System Protection .............................................................................................................. 7 1.3.1 Power System Protection Schemes ...................................................................................... 8 1.4 Power System Trends.................................................................................................................. 11 1.4.1 Power Generation Projection ............................................................................................. 14 1.5 Integrated Distributed Generation ............................................................................................. 14 1.6 Thesis Objective .......................................................................................................................... 16 Chapter Two ................................................................................................................................................ 18 2.1 Literature Review ........................................................................................................................ 18 2.2 Benefits of Integrated Distributed Generation ........................................................................... 20 2.2.1 System Reliability Improvement ......................................................................................... 21 2.2.2 Standby Reserve for Peak Load Management .................................................................... 21 2.2.3 Power System Capacity Expansion...................................................................................... 22 2.2.4 Voltage Profile Impact ......................................................................................................... 22 2.2.5 Power Loss Impact .............................................................................................................. 23 2.2.6 Environmental Impact ......................................................................................................... 23 i 2.3 Disadvantages of Distributed Generation ................................................................................... 23 Chapter Three ............................................................................................................................................. 25 3.1 Simpowersystems ....................................................................................................................... 25 3.1.1 Simulations Analysis Capabilities ........................................................................................ 26 3.2 Test System ................................................................................................................................. 26 3.2.1 Test System Circuit Description .......................................................................................... 29 3.3 Test System Data ......................................................................................................................... 30 3.4 Test system component models ................................................................................................. 32 3.5 Protection System Study Model ................................................................................................. 32 3.5.1 Types of Faults .................................................................................................................... 32 3.5.2 Single Phase to Ground Fault .............................................................................................. 34 3.5.3 Line to Line to Ground Fault ............................................................................................... 35 3.5.4 Line to Line Fault ................................................................................................................. 37 3.5.5 Three Phase Fault ................................................................................................................ 38 Chapter Four ............................................................................................................................................... 41 4.1 Scenario Description ................................................................................................................... 41 4.2 Scenarios ..................................................................................................................................... 42 4.2.1 Voltage Impact .................................................................................................................... 43 4.2.2 Distributed Resource Location Impact ................................................................................ 45 4.2.3 Power Loss Impact .............................................................................................................. 45 4.2.4 Short Circuit Current Impact ............................................................................................... 47 4.2.5 Protective Device Impact .................................................................................................... 48 4.2.6 Scenario 1: L-G Faults ....................................................................................................... 51 ii 4.2.7 Scenario 2: L-L Faults ......................................................................................................... 59 Chapter Five ................................................................................................................................................ 62 5.1 Fault Identification and Circuit Isolation ..................................................................................... 62 5.2 Characteristic Response of Sequence Components to Fault Currents ........................................ 66 5.2.1 Location Response of Sequence Components to Fault Current .......................................... 71 5.2.2 Summary of Fault Identification analysis ........................................................................... 75 5.3 Conclusion ................................................................................................................................... 76 5.4 Future Work ...............................................................................................................................
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