Publication

Abstract : Loads have a direct influence on the voltage profile of the system. The voltage is affected whenever there is a change in the load. Hence irrespective of the magnitude and type of load, the voltage level must be maintained in the allowable operating range. Therefore, by providing reactive power, the voltage level of the system is improved and system stability is maintained. Flexible AC Transmission Systems (FACTS) are preferable alternatives that provide reactive power support to a system. Shunt FACTS devices like SVC is less complex and provide ease of operation in reactive power compensation. This paper presents the design and implementation of Fixed Capacitor-Thyristor Controlled Reactor (FC-TCR) based SVC system for a laboratory scaled transmission system to maintain the voltage profile in the permissible limit. The system taken into consideration is an IEEE 5-Bus system. The TCR is controlled by a Proportional Integral (PI) controller to calculate the firing angle for the thyristors. The system is modelled and simulated on the MATLAB/Simulink platform. The FC-TCR is implemented utilizing an efficient microcontroller for thyristor triggering and effectively tried on a standard laboratory scaled model of the IEEE- 5 Bus system with different load conditions.