ABSTRACT
The need to control reactive power through transmission and distribution lines has been recognized since the emergence of the AC power system. Fixed and switched shunt capacitors are used to ensure desirable voltage profile along the transmission and distribution lines. To handle dynamic disturbances such as line switching, loss of generation, load rejection, and system faults, the reactive power has to be supplied quickly to keep the system stable. With fluctuating loads such as arc furnaces, crushing mills, paper mills, and continuous miners in the mining industry, there is a need for adaptive power factor correcting devices. The thyristor controlled static VAR compensators (SVC) offer such opportunities for dynamic power control.
