Course Details

Subject {L-T-P / C} : EE3100 : Power Systems Operation and Control {3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Ananyo Sengupta


Load Flow Analysis: Network equation, Power Flow problem, Gauss-Seidel method, Newton-Raphson method, Decoupled method, Fast Decoupled method.
Power System Fault Analysis: Balanced Fault, Fault analysis using Z-bus matrix, Z-bus matrix building algorithm Symmetrical Component and Unbalanced fault, Sequence impedances of load, transmission lines, transformer and generator, Unbalanced Fault analysis using sequence impedance matrices, Single-line-to-ground fault, Line-to-line fault, Double-line-to-ground fault analysis.
Power System Stability: Swing Equation of synchronous machine, Steady-state stability – small disturbances, Transient stability analysis – Equal Area criterion, Application of equal area criterion to sudden increase in power input and to three-phase fault Numerical solution of nonlinear equation, Numerical solution of swing equation, Transient stability analysis of a multi-machine power system.
Optimal Dispatch of Generation: Operating cost of a thermal plant, Economic Dispatch problem, Unconstrained and constrained optimization technique, Economic dispatch neglecting losses, Kron’s loss formula, Economic dispatch including losses.
Automatic Generation and Voltage Control: Load Frequency control, concept of control area, Proportional plus Integral control, Two-Area load frequency control, Automatic voltage control, Regulator, Exciter modelling, Generator modelling and static performance of AVR loop.

Course Objectives

  1. 1. Steady state analysis of power system
    2. Short circuit analysis of power system
    3. Small-signal and large-signal analysis of power system
    4. Economic dispatch of power system
    5. Automatic Load Frequency analysis and Automatic Voltage Regulation of power system

Course Outcomes

At the end of the course, students will be able to
1. Determine steady state voltage, current and power flow in a power system using load flow analysis.
2. Determine short circuit current and voltage in a system for both balanced and unbalanced faults.
3. Understand stability analysis for both small-signal and large-signal disturbances
4. Determine economic scheduling of generations in a power system to supply specific amount of demand.
5. Understand governor actions and automatic voltage regulation.

Essential Reading

  1. Hadi Sadat, Power system Analysis, PSA Publishing
  2. I.J. Nagrath and D. P. Kothari, Modern Power System Operation and Control, Tata McGraw-Hill Education

Supplementary Reading

  1. W. D. Stevenson, Elements of Power System Analysis, McGraw Hill
  2. Olle I. Elgerd, Electric Energy Systems Theory: An Introduction, McGraw Hill Education