Abstract: In the recent past, one of the problem that got wide attention is the power system instabilities with the lack of new generation and transmission facilities and increase in the load demand of electrical power is continuously rising at a very high rate, due to rapid industrial development. Power quality is the main problem that the industry is facing today. Power electronics and advanced control technologies have made it possible to reduce the power quality problems. Among power system disturbances, voltage sags, swells and harmonics are some of severe problems to the sensitive loads. The series compensation method is best suited to protect such loads against those disturbances The series compensator device thyristor controlled series capacitor is used for improving power quality of power system. The role of the compensator is to mitigate the effects of voltage sag. The thyristor controlled series capacitor method approach is different from another conventional method and provide effective solution in power system. A control strategy for the Series Compensation is developed to regulate power flow and minimize the losses in the power system. This is achieved through phase adjustment of load terminal voltage. It leads to an increase in the ride through capability of loads to the voltage sags/swells. In this thesis work, results show a comparative study of output voltage across a nonlinear load using Thyristor Controlled Series Capacitor device control through PWM Generator six pulses control and Thyristor Controlled Series Capacitor control through firing angle control for the reduction of voltage sag in transmission line. The simulation results showed that the proposed series compensator was efficient in mitigating voltage sags and improve the power quality of power system. This approach is different from conventional methods and provides effective solution. If this method is enhanced in future could provide much more improved power quality.
Title: Mitigation Voltage Sag Thyristor Controlled Series Capacitor Generator Their Comparison
Author: Manisha Chadar
International Journal of Thesis Projects and Dissertations (IJTPD)
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