**7EE2 POWER SYSTEM ANALYSIS**

**Unit-1 **(i) Percent and per unit quantities. Single line diagram for a balanced 3-phase system. (ii)
Admittance Model: Branch and node admittances Equivalent admittance network and
calculation of Y bus. Modification of an existing Y bus.

**Unit-2** (i) Impendence Model: Bus admittance and impedance matrices. Thevenin’s theorem and Z bus.
Direct determination of Z bus. Modification of an existing bus. (ii) Symmetrical fault Analysis:
Transient on a Transmission line, short circuit of a synchronous machine on no load, short circuit
of a loaded synchronous machine. Equivalent circuits of synchronous machine under sub transient,
transient and steady state conditions. Selection of circuit breakers, Algorithm for short circuit
studies. Analysis of three-phase faults.

**Unit-3** (i) Symmetrical Components: Fortescure theorem, symmetrical component transformation.
Phase shift in star-delta transformers. Sequence Impedances of transmission lines, Synchronous
Machine and Transformers, zero sequence network of transformers and transmission lines.
Construction of sequence networks of power system. (ii) Fault Analysis: Analysis of
single line to ground faults using symmetrical components, connection of sequence networks
under the fault condition.

**Unit-4** Unsymmetrical Fault Analysis: (i) Analysis of line-to-line and double line to ground faults
using symmetrical components, connection of sequence networks under fault conditions.
(ii) Analysis of unsymmetrical shunt faults using bus impedance matrix method.

**Unit-5** Load Flow Analysis: Load flow problem, development of load flow equations, bus
classification. Gauss Seidel, Newton Raphosn, decoupled and fast decoupled methods for load
flow analysis. Comparison of load flow methods.

**Reference/Suggested Books**

1. J. J. Grainger, William, D. Stevenson Jr. – Power System Analysis. McGraw-Hill

2. Nagrath and Kothari – Power System Engineering 2/e Tata Mc Graw Hill

3. Haadi SAADAT- Power System Analysis (With Disk) ,TMH

4. T.K Nagsarkar & M.S. Sukhija, “Power System Analysis” Oxford University Press,2007.

5. W.D. Stevenson, Jr. “Elements of Power System Analysis”, Mc Graw Hill.

6. J.D. Glover, M.S. Sharma & T.J.Overbye, “Power System Analysis and Design” Thomson,
2008.

7. Kothari & Nagrath, “Modern Power System Analysis” Tata Mc. Graw Hill.