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Students those who are studying JNTUK R19 EEE Branch, Can Download Unit wise R19 3-2 Power System Analysis (PSA) Material/Notes PDFs below.

Preamble: The course is designed to give students the required knowledge for the design and analysis of electrical power grids. Calculation of power flow in a power system network using various techniques, formation of Zbus and its importance are covered in this course. It also deals with short circuit analysis and analysis of power system for steady state and transient stability.

OBJECTIVES:

• To development the impedance diagram (p.u) and formation of Ybus
• To study the different load flow methods.
• To study the concept of the Zbusbuilding algorithm.
• To study short circuit calculation for symmetrical faults
• To study the effect of unsymmetrical faults and their effects.
• To study the rotor angle stability of power systems.

UNIT-1

Circuit Topology & Per Unit Representation

Graph theory definition – Formation of element node incidence and bus incidence matrices – Primitive network representation – Formation of Ybus matrix by singular transformation and direct inspection methods – Per Unit Quantities–Single line diagram– Impedance diagram of a power system.

UNIT-2:

Power Flow Studies

Necessity of power flow studies – Derivation of static power flow equations – Power flow solution using Gauss-Seidel Method – Newton Raphson Method (Rectangular and polar coordinates form) –Decoupled and Fast Decoupled methods – Algorithmic approach –Problems on 3–bus system only.

UNIT-3:

Z-Bus Algorith & Symmetrical Fault Analysis:

Formation of Zbus: Algorithm for the Modification of Zbus Matrix (without mutual impedance).

Symmetrical Fault Analysis:

Reactances of Synchronous Machine – Three Phase Short Circuit Currents – Short circuit MVA calculations for Power Systems.

UNIT-4:

Symmetrical Components & Fault analysis Definition of symmetrical components – symmetrical components of unbalanced three phase systems – Power in symmetrical components – Sequence impedances: Synchronous generator – Transmission line and transformers – Sequence networks –Various types of faults LG– LL– LLG and LLL on unloaded alternator–unsymmetrical faults on power system for numerical problems only.

UNIT-5:

Power System Stability Analysis Elementary concepts of Steady state – Dynamic and Transient Stabilities – Description of Steady State Stability Power Limit –Transfer Reactance–Synchronizing Power Coefficient – Power Angle Curve and Determination of Steady State Stability – Derivation of Swing Equation–Determination of Transient Stability by Equal Area Criterion –Applications of Equal Area Criterion – Methods to improve steady state and transient stability.

TEXT BOOKS:

1. Power System Analysis by Grainger and Stevenson, Tata McGraw Hill.
2. Modern Power system Analysis – by I.J.Nagrath & D.P.Kothari: Tata McGraw–Hill Publishing Company, 2nd edition

REFERENCE BOOKS:

1. Power System Analysis – by A.R.Bergen, Prentice Hall, Inc.