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| EEE 4-1 FACTS | ||
|---|---|---|
| S.No | Chapters / Units | Download Link |
| 1 | Unit 1 | Download |
| 2 | Unit 2 | Download |
| 3 | Unit 3 | Download |
| 4 | Unit 4 | Download |
| 5 | Unit 5 | Download |
EEE 4-1 FACTS Important Topics
Preamble:
Flexible Alternating Current Transmission System controllers have become a part of modern power
system. It is important for the student to understand the principle of operation of series and shunt
compensators by using power electronics. As the heart of many power electronic controllers is a voltage
source converter (VSC), the student should be acquainted with the operation and control of VSC. The
modern power electronic controllers are also introduced.
Course Objectives:
x To learn the basics of power flow control in transmission lines using FACTS controllers
x To explain operation and control of voltage source converter.
x To learn the method of shunt compensation using static VAR compensators.
x To learn the methods of compensation using series compensators
x To explain operation of Unified Power Flow Controller (UPFC) and Interline Power flow
Controller (IPFC).
UNIT - I
Introduction to FACTS
Power flow in an AC System – Loading capability limits – Dynamic stability considerations –
Importance of controllable parameters – Basic types of FACTS controllers – Benefits from FACTS
controllers – Requirements and characteristics of high power devices – Voltage and current rating –
Losses and speed of switching – Parameter trade–off devices.
UNIT - II
Voltage source and Current source converters
Voltage source converter (VSC) – Single phase full-wave bridge converter – Square wave voltage
harmonics for a single–phase bridge converter – Three–phase full-wave bridge converter - Transformer
connections for 12 pulse operation.
Current Source Converter (CSC)-Three–phase current source converter – Comparison of current source
converter with voltage source converter.
UNIT - III
Shunt Compensators
Objectives – Mid–point voltage regulation for line segmentation – End of line voltage support to prevent
voltage instability – Improvement of transient stability – Power oscillation damping.
Variable Impedance Type VAR Generator: Thyristor Switched/Controlled Reactor (TSR/TCR) –
Thyristor Switched Capacitor (TSC) – Fixed Capacitor–Thyristor Controlled Reactor (FC-TCR) -
Thyristor Switched Capacitor and Thyristor Controlled Reactor (TSC–TCR) - Switching Converter type
VAR generator.
Principle of operation and comparison of SVC and STATCOM.
UNIT - IV
Series Compensators
Concept of series capacitive compensation – Improvement of transient stability – Power oscillation
damping – Functional requirements. Variable Impedance type series compensators – GTO Thyristor
controlled Series Capacitor (GSC) – Thyristor Switched Series Capacitor (TSSC) and Thyristor
Controlled Series Capacitor (TCSC) - Switching Converter type Series Compensation – Static
Synchronous Series Compensator.
UNIT - V
Combined Compensators
Schematic and basic operating principles of unified power flow controller (UPFC) and Interline power
flow controller (IPFC) – Controller applications of transmission lines.
Course Outcomes:
After the completion of the course the student should be able to:
x Know the concepts of facts controller and power flow control in transmission line.
x Demonstrate operation and control of voltage source converter and know the concepts current
source converter.
x Analyse compensation by using different compensators to improve stability and reduce power
oscillations in the transmission lines.
x Know the concepts methods of compensations using series compensators.
x Analyse operation of Unified Power Flow Controller (UPFC) and Interline power flow controller
(IPFC).
Text Books:
1. “Understanding FACTS” N.G.Hingorani and L.Guygi, IEEE Press.Indian Edition is available:––
Standard Publications, 2001.
Reference Books:
1. “Flexible ac transmission system (FACTS)” Edited by Yong Hue Song and Allan T Johns,
Institution of Electrical Engineers, London.
2. Thyristor-based FACTS Controllers for Electrical Transmission Systems, by R. Mohan Mathur
and Rajiv K.Varma, Wiley.
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