#### Course Details

Subject {L-T-P / C} : EE3112 : Power Systems {3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Ananyo Sengupta

#### Syllabus

Power System Network: Basic structure of power system, Introduction to power generation, transmission and distribution system, Power network in India.
Line Parameters: Transmission line resistance, Inductance, Flux Linkage of an isolated current-carrying conductor, Inductance of a single-phase two-wire line, Flux linkage of one conductor in a group, Inductance of composite conductor lines, Inductance of three phase lines, Bundled conductors Capacitance of a two-wire line, capacitance of a three-phase line with equilateral spacing, Capacitance of a three-phase line with unsymmetrical spacing, Effect of earth on transmission line capacitance.
Representation of Power system Components: Single-phase solution of balanced three-phase network, Single line diagram of power system, Per-Unit system, classical model of synchronous machine.
Performance of Transmission Line: Evaluation of ABCD parameters for short transmission line, medium transmission line and long transmission line, Nominal T and p representation, Ferranti effect, Line voltage regulation and voltage control.
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 Protection: General architecture of protection system, Evolution of relays, Attributes of a protection system, Current and potential transformer for relays, Zones of protections, Concept of primary and back-up protection, Introduction to overcurrent protection, distance protection, differential protection Circuit Breaker operation and types.

#### Course Objectives

1. 1. To develop basic idea and mathematical models of several power system components.
2. To perform steady state analysis of a power system.
3. To perform short circuit analysis of a power system
4. To understand the basic protection philosophy for power systems

#### Course Outcomes

At the end of the course, students will be able to
1. Understand the performance of transmission lines
2. Conduct steady state analysis of a power system
3. Perform short circuit analysis (for both balanced and unbalanced fault) of a power system
4. Understand the constructions and operating principles of overcurrent, distance and differential relays for transmission line, transformers and busbars.
5. Understand circuit breakers’ operation.