EE523-Part1.pdf - Electrical Engineering Department University of Santo Tomas EE 523 POWER SYSTEM ANALYSIS AND DESIGN Engr John Kenneth T Sinson

EE523-Part1.pdf - Electrical Engineering Department...

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Electrical Engineering Department University of Santo Tomas EE 523 POWER SYSTEM ANALYSIS AND DESIGN Engr. John Kenneth T. Sinson Instructor
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Electrical Engineering Department University of Santo Tomas EE 523 – Power System Analysis and Design COURSE OUTLINE REVIEW ON SYMMETRICAL COMPONENTS SYSTEM MODELING – SEQUENCE NETWORK INTODUCTION TO FAULT STUDIES FAULT CALCULATION - PRELIMS - INTRODUCTION TO LOAD/POWER FLOW STUDIES SYSTEM MODELING FOR LOAD FLOW STUDIES ITERATIVE SOLUTIONS FOR LOAD FLOW PROBLEMS SYSTEM DESIGN USING LOAD FLOW AND FAULT CALCULATION - FINALS -
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Electrical Engineering Department University of Santo Tomas REVIEW ON SYMMETRICAL COMPONENTS Phasor Rotation Counter clockwise direction by international convention Phase Sequence The order in which phasors pass a fixed point. EE 523 – Power System Analysis and Design
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Electrical Engineering Department University of Santo Tomas Symmetrical Components in Any Phase component could be resolved into sum of three Symmetrical Components, namely: 1) Positive – sequence component 2) Negative – sequence component 3) Zero – sequence component Phasor sum of the three symmetrical components will yield the equivalent phase value EE 523 – Power System Analysis and Design
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Electrical Engineering Department University of Santo Tomas Symmetrical Components in Positive – sequence components o Consists of three phasors equal in magnitude and displaced by 120° in phase o Has a phase sequence the same with the original phasors o Normally designated having a subscript of “1” 1 c V 1 a V 1 b V Assuming a-b-c phase sequence of original phasor. EE 523 – Power System Analysis and Design
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Electrical Engineering Department University of Santo Tomas Symmetrical Components in Negative – sequence components o Consists of three phasors equal in magnitude and displaced by 120° in phase o Has a phase sequence opposite with the original phasors o Normally designated having a subscript of “2” Assuming a-b-c phase sequence of original phasor. 2 a V 2 b V 2 c V EE 523 – Power System Analysis and Design
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Electrical Engineering Department University of Santo Tomas Symmetrical Components in Zero – sequence components o Consists of three phasors equal in magnitude and displaced by in phase o Normally designated having a subscript of “0” Zero-sequence components doesn’t have a phase sequence. 0 0 0 c b a V V V EE 523 – Power System Analysis and Design
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Electrical Engineering Department University of Santo Tomas Symmetrical Components in The unbalanced phasors in a three phase system is equal to
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