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.
