'Sequence impedance' diaporamas de présentation

Fault Analysis

Fault Analysis. As per ANSI standard NO.ANSI/IEEEStd141-1986. S. A. Soman Department of Electrical Engineering IIT Bombay Powai Mumbai-400076 Email: soman@ee.iitb.ac.in. Acknowledgements . Pushpa Kulkarni Rajani Vaidyanathan Laxmi Andal Rajeev Ramanand Prashant

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Fault Analysis

Fault Analysis. As per ANSI standard NO.ANSI/IEEEStd141-1986. S. A. Soman Department of Electrical Engineering IIT Bombay Powai Mumbai-400076 Email: soman@ee.iitb.ac.in. Acknowledgements . Pushpa Kulkarni Rajani Vaidyanathan Laxmi Andal Rajeev Ramanand Prashant

446 views • 38 slides

Fault Analysis

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Lesson 8 Symmetrical Components

Lesson 8 Symmetrical Components. Symmetrical Components. Due to C. L. Fortescue (1918): a set of n unbalanced phasors in an n-phase system can be resolved into n balanced phasors by a linear transformation The n sets are called symmetrical components

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Seq. Imp. of balanced Y-load: Vag = ZYIa + Zn In = ZYIa+ Zn(Ia + Ib + Ic)

Seq. Imp. of balanced Y-load: Vag = ZYIa + Zn In = ZYIa+ Zn(Ia + Ib + Ic) Vag =(Zy+Zn)Ia + ZnIb +ZnIc Similarly, Vbg =ZnIa + (Zy+Zn)Ib +ZnIc Vcg =ZnIa + ZnIb +(Zy+Zn)Ic. In matrix form, V ph = Z ph I ph In terms of sym components,.

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