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SYLLABUS

Unit - 1 :

Power System Need for system planning and operational studies – Power scenario in India – Power system components – Representation – Single line diagram – Per unit quantities – p.u. impedance diagram – p.u. reactance diagram – Network graph, Bus incidence matrix, Primitive parameters, Bus admittance matrix from primitive parameters – Representation of off-nominal transformer – Formation of bus admittance matrix of large power network.

Unit - 2 :

Power Flow Analysis Bus classification – Formulation of power flow problem in polar coordinates – Power flow solution using Gauss Seidel method – Handling of voltage controlled buses – Power flow solution by Newton Raphson method.

Unit - 3 :

Symmetrical Fault Analysis Assumptions in short circuit analysis – Symmetrical short circuit analysis using Thevenin’s theorem – Bus impedance matrix building algorithm (without mutual coupling) – Symmetrical fault analysis through bus impedance matrix – Post fault bus voltages – Fault level – Current limiting reactors.

Unit - 4 :

Unsymmetrical Fault Analysis Symmetrical components – Sequence impedances – Sequence networks – Analysis of unsymmetrical faults at generator terminals: LG, LL and LLG – Unsymmetrical fault occurring at any point in a power system – Computation of post fault currents in symmetrical component and phasor domains.

Unit - 5 :

Stability Analysis Classification of power system stability – Rotor angle stability – Swing equation – Swing curve – Power-angle equation – Equal area criterion – Critical clearing angle and time – Classical step-by-step solution of the swing equation – Modified Euler method.