Design and Implementation of a 12-Pulse TCR-Based SVC for Voltage Regulation

Thyristor Controlled Reactor (TCR) based static VAr compensator (SVC) systems can be implemented with several optional topologies which depends on the required functions and associated costs. In this paper, the analysis and implementation of a 12-pulse TCR-based voltage regulation type SVC system is discussed. In literature, this paper represents the most detailed field implementation and discussion of a 12-pulse TCR-based SVC system that is used for voltage regulation purposes. Principles of operation and overall design assessment are described. This system has been installed to mitigate the voltage regulation problem in a village located in Durma area, Saudi Arabia. The entire installation consists of two identical (except for power transformers) SVCs with a rated power of 1.5 MVAr each. A cascaded PI control algorithm is implemented and steady and dynamic states are assessed. Test results from the field are given with a discussion of the overall performance.