3 0 0
3
AIM: To
enhance the transmission capability of transmission system by shunt and series compensation using static controllers.
OBJECTIVES:
i. To understand the concept of flexible AC transmission and the associated problems. ii. To review the static devices for series and shunt control.
iii. To study the operation of controllers for enhancing the transmission capability.
UNIT I INTRODUCTION 9
The concept of flexible AC transmission - reactive power control in electrical power transmission
lines -uncompensated transmission line
– series and shunt compensation. Overview
of
FACTS devices - Static
Var Compensator (SVC) – Thyristor Switched Series capacitor (TCSC) – Unified
Power Flow controller (UPFC)
- Integrated Power Flow Controller
(IPFC).
UNIT II STATIC VAR COMPENSATOR (SVC) AND APPLICATIONS 9
Voltage control by SVC – advantages of slope in dynamic characteristics – influence of SVC on
system
voltage. Applications - enhancement of transient stability – steady state power transfer – enhancement of power
system
damping – prevention of voltage instability.
UNIT III THYRISTOR CONTROLLED SERIES CAPACITOR(TCSC)AND APPLICATIONS 9
Operation of the TCSC - different modes of operation – modeling of TCSC – variable reactance model – modeling for
stability studies. Applications - improvement of the system stability limit –
enhancement of system
damping
– voltage collapse prevention.
UNIT IV EMERGING FACTS CONTROLLERS 9
Static Synchronous Compensator (STATCOM) – operating principle – V-I characteristics Unified
Power Flow Controller (UPFC)
– Principle of operation - modes of
operation – applications – modeling of UPFC for
power flow
studies.
UNIT V CO-ORDINATION OF FACTS CONTROLLERS 9
FACTs Controller
interactions – SVC–SVC interaction - co-ordination of multiple controllers using
linear
control
techniques – Quantitative treatment of control
coordination.
TOTAL : 45 PERIODS
TEXT BOOK:
1. Mohan Mathur, R., Rajiv. K. Varma, “Thyristor – Based Facts Controllers for
Electrical
Transmission Systems”, IEEE press and John Wiley & Sons, Inc.
REFERENCES:
1. A.T.John, “Flexible AC Transmission System”, Institution of Electrical
and Electronic Engineers
(IEEE), 1999.
2. Narain G.Hingorani, Laszio. Gyugyl, “Understanding FACTS Concepts and Technology of Flexible AC Transmission System”, Standard Publishers, Delhi 2001.
