**7EE5 POWER SYSTEM ENGINEERING**

**Unit-1** Economic Operation of Power Systems: Introduction, system constraints, optimal operation
of power systems. Input output, heat rate and incremental rate curves of thermal generating
units. Economic distribution of load between generating units within a plant. Economic
distribution of load between power stations, transmission loss equation. Introduction to unit
commitment and dynamic programming.

**Unit-2** Power System Stability -I: Power angle equations and power angle curves under steady state
and transient conditions. Rotor dynamics and swing equation (solution of swing equation not
included), synchronizing power coefficient. Introduction to steady state and dynamic stabilities,
steady state stability limit.

**Unit-3 **Power System Stability-II: Introduction to transient stability. Equal area criterion and its
application to transient stability studies under basic disturbances, critical clearing angle and
critical clearing time. Factors affecting stability and methods to improve stability.

**Unit-4** (i) Excitation Systems: Introduction of excitation systems of synchronous machines, types of
excitation systems, Elements of various excitation systems and their control (functional blockdiagrams and their brief description)-DC excitation systems, AC excitation systems, brushless

excitation system. (ii) Interconnected Power Systems: Introduction to isolated and
interconnected powers systems. Reserve capacity of power stations, spinning and maintenance
resaves. Advantages and problems of interconnected power systems. Power systems inter
connection in India.

**Unit-5** (i) Tap Changing transformer, phase angle control and phase shifting transformer. Series
compensation of transmission lines, location and protection of series capacitors, advantages and
problems. (ii) Introduction to power system security. (iii) Introduction to voltage stability.

**Reference/Suggested Books**

1. J. Nagrath and D.P. Kothari: Power System Engineering 2/e (TMH)

2. J. J. Grainger and W. D. Stevenson: Power System Analysis (TMH)

3. B. R. Gupta, “Power System Analysis and Design” Third Edition, S. Chand & Co.

4. C. L. Wadhwa, “Electrical Power Systems” New age international Ltd. Third Edition

5. W. D. Stevenson, “Element of Power System Analysis”, McGraw Hill.

6. B.R. Gupta,“Generation of Electrical Energy”, S. Chand Publication.