Power System AnalysisR16 semester 3-2 lecture notes

POWER SYSTEM ANALYSIS

POWER SYSTEM ANALYSIS

Preamble:
The course is designed to provide college students the required information for the design and
evaluation {of electrical} energy grids. Calculation of energy stream in an influence system community
utilizing numerous strategies, formation of Zbus and its significance are lined on this course. It
additionally offers with brief circuit evaluation and evaluation of energy system for regular state and
transient stability.
Studying Targets:
• To growth the impedance diagram (p.u) and formation of Ybus
• To review the totally different load stream strategies.
• To review the idea of the Zbusbuilding algorithm.
• To review brief circuit calculation for symmetrical faults
• To review the impact of unsymmetrical faults and their results.
• To review the rotor angle stability of energy programs.
UNIT –I:
Per Unit Illustration & Topology
Per Unit Portions–Single line diagram– Impedance diagram of an influence system–Graph
concept definition – Formation of aspect node incidence and bus incidence matrices –
Primitive community illustration – Formation of Y–bus matrix by singular transformation
and direct inspection strategies.
UNIT –II:
Energy Circulate Research
Necessity of energy stream research – Derivation of static energy stream equations – Energy stream
answer utilizing Gauss-Seidel Methodology – Newton Raphson Methodology (Rectangular and polar
coordinates kind) –Decoupled and Quick Decoupled strategies – Algorithmic strategy –
Issues on 3–bus system solely.
UNIT –III:
Z–Bus formulation
Formation of Z–Bus: Partial community– Algorithm for the Modification of Zbus Matrix for
addition aspect for the next circumstances: Addition of aspect from a brand new bus to reference–
Addition of aspect from a brand new bus to an outdated bus– Addition of aspect between an outdated bus
to reference and Addition of aspect between two outdated busses (Derivations and Numerical
Issues).– Modification of Z–Bus for the adjustments in community ( Issues).
UNIT – IV:
Symmetrical Fault Evaluation
Transients on a Transmission line-Brief circuit of synchronous machine(on no-load) – 3–
Part brief circuit currents and reactances of synchronous machine–Brief circuit MVA
calculations –Sequence reactors – number of reactors.

UNIT –V:
Symmetrical Elements & Fault evaluation
Definition of symmetrical elements – symmetrical elements of unbalanced three section
programs – Energy in symmetrical elements – Sequence impedances – Synchronous
generator – Transmission line and transformers – Sequence networks –Varied varieties of faults
LG– LL– LLG and LLL on unloaded alternator–unsymmetrical faults on energy system.
UNIT – VI:
Energy System Stability Evaluation
Elementary ideas of Regular state– Dynamic and Transient Stabilities– Description of
Regular State Stability Energy Restrict–Switch Reactance–Synchronizing Energy Coefficient –
Energy Angle Curve and Dedication of Regular State Stability –Derivation of Swing
Equation–Dedication of Transient Stability by Equal Space Criterion–Purposes of
Equal Space Criterion–Strategies to enhance regular state and transient stability.
`Studying Outcomes:
• Ready to attract impedance diagram for an influence system community and to grasp per
unit portions.
• Capable of kind aYbusand Zbusfor an influence system networks.
• Capable of perceive the load stream answer of an influence system utilizing totally different strategies.
• Capable of finding the fault currents for all sorts faults to supply information for the design of
protecting units.
• Capable of findthe sequence elements of currents for unbalanced energy system
community.
• Capable of analyze the regular state, transient and dynamic stability ideas of an influence
system.
Textual content Books:
1. Energy System Evaluation by Grainger and Stevenson, Tata McGraw Hill.
2. Fashionable Energy system Evaluation – by I.J.Nagrath&D.P.Kothari: Tata
McGraw–Hill Publishing Firm, 2nd version.

Reference Books:
1. Energy System Evaluation – by A.R.Bergen, Prentice Corridor, Inc.
2. Energy System Evaluation by HadiSaadat – TMH Version.
3. Energy System Evaluation by B.R.Gupta, Wheeler Publications.
4. Energy System Evaluation and Design by J.Duncan Glover, M.S.Sarma, T.J.Overbye
– CengageLearning publications.