Time Jitter in Phase Controlled Thyristor Circuits

Switching Time Bifurcations in a Thyristor Controlled Reactor

Thyristor controlled reactors are high power switching circuits used for static VAR control and the emerging technology of flexible ac transmission. The static VAR control circuit considered in the paper is a nonlinear periodically operated RLC circuit with a sinusoidal source and ideal thyristors with equidistant firing pulses. This paper describes new instabilities in the circuit in which thy...

Multi-phase (6-phase & 12-phase) Power Transmission Systems with Thyristor Controlled Series Capacitor

Multi-phase (employing phases more than three) power transmission systems have been investigated as a potential alternative to conventional three-phase systems for bulk power transmission at EHV and UHV levels in the past. The technology has been found to be effective to remove some of the limitations of threephase system arising out of the use of extremely high voltages to increase power capab...

Stability and nonlinear dynamics in thyristor and diode circuits

Damping and Incremental Energy in Thyristor Switching Circuits

Thyristor controlled reactors provide controllable inductances in utility power lines and are increasingly used for static var control and flexible AC transmission. The size of a perturbation from a nominal periodic steady state can be measured by its incremental energy. This paper shows that incremental energy of a small perturbation increases when a thyristor switches on and decreases when a ...

LFC of an Interconnected Power System with Thyristor Controlled Phase Shifter in the Tie Line

This paper presents the analysis of the load frequency control (LFC) of a realistic two area interconnected power system having diverse sources of power generation. A Thyristor Controlled Phase Shifter (TCPS) is used in series with AC tie line for improving the dynamic performance of the LFC system. The power system simulation is done using MATLAB Simulink and control problem is solved using MA...