7EE6.3 ECONOMIC OPERATION OF POWER SYSTEMS
Unit-1 Economics of Power Generation: Introduction, cost of electrical energy, expression for cost of
electrical energy, depreciation, power plant cost analysis, economics in plant selection, selection
of types of generation and types of equipments, factors effecting economic generations and
distributions, generating cost, economics of different types of generating plants.
Unit-2 Economical Operations of thermal power plants: Methods of loading turbo generators, input,
output and heat rate characteristics, incremental cost, two generations units, large no of units,
sequence of adding units, effects of transmission losses, economic scheduling considering
transmission losses, coordination equations, penalty factors
Unit-3 Hydro Thermal coordination: Advantages of combined operation, base load peak load
operation requirement, combined working of run-off river and steam plant, reservoirs hydroplants
and thermal plants (long term operational aspects), short term hydro thermal coordination,
coordination equations, scheduling methods and applications.
Unit-4 Parallel Operations of Generators: Conditions, synchronizing current and power, two
alternators in parallel (effect of change in excitation, load sharing, sharing of load currents),
Infinite bus bars, active and reactive power control, synchronizing power, torque, operating
limits of alternators, operating characteristics of cylindrical alternator rotor.
Unit-5 Economics for Electrical Engineers: Concepts of physical and financial efficiencies of
electrical goods and services, supply and demand, break even and minimum cost analysis, linear
and nonlinear break even, min cist analysis
Reference/Suggested Books
1. Nagrath and Kothari: Modern Power System Analysis (TMH)
2. D.P. Kothari & I.J. Nagrath, “Modern Power System Analysis” Tata Mc Graw Hill,
3. J. Wood & B.F. Wollenburg, “ Power Generation, Operation and Control “ John Wiley
4. O.I. Elgerd, “Electric Energy System Theory” Tata McGraw Hill.
5. P. Kundur, “Power System Stability and Control Mc Graw Hill.