VOLTAGE CONTROL & DYNAMIC PERFORMANCE OF POWER TRANSMISSION SYSTEM USING SVC

[seminar surveyer]

PRESENTED BY:
Heemanshu das

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INTRODUCTION
With the rapid development of power system, especially the increased use of transmission facilities due to higher industrial output and deregulation, it becomes necessary to explore new ways of maximizing power transfer in existing transmission facilities, while at the same time maintaining the acceptable levels of the network reliability and stability. On the other hand, the fast development of power electronic technology has made FACTS (flexible AC Transmission system) promising solution of future power system . So Static VAR Compensator (SVC) able to change the network parameters in a fast and effective way in order to achieve better system performance . These controllers are used for enhancing dynamic performance of power systems in terms of voltage/angle stability while improving the power transfer Capability.
Power transfer
Power flow equation





STATIC VAR COMPENSATOR(SVC) `
INTRODUCTION
PRINCIPLE
BASIC ELEMENTS
TCR = Thyristor Controlled Reactor
TSR = Thyristor Switched Reactor
TSC = Thyristor Switched Capacitor
MSC = Mechanically-Switched Capacitor
MSR = Mechanically-Switched Reactor


Thyristor Controlled Reactor (TCR)

Parallel-connected static var generator or absorber
Output is adjusted to exchange capacitive or
inductive current adjusting firing angle 0 to 360.
Maintain or control specific parameters of the
electrical power system (typically bus voltage).
Thyristor-based Controllers.