Implementation of a Simplified SVC Model into Newton-Raphson Load Flow Algorithm

This paper presents a simple modelling for one of most popular Flexible AC Transmission System (FACTS) device; Static VAR Compensator (SVC) into Newton-Raphson load flow algorithm. SVC now is being used in wide range in transmission applications. SVC is applied in transmission line for increasing the voltage stability and control voltage magnitude at a specified value. The developed model based on transmitting the connected SVC bus from load bus (PQ bus) to PV bus with controlling the voltage magnitude value. However, the transmitted bus generates zero active power and updated reactive power until the convergence of load flow is achieved. The simplified SVC model has different merits than the other traditional models such as; limit of Jacobian matrix modification, avoiding the modification in original admittance matrix, improving the convergence characteristic and reducing computation time. The developed model is validated based on small and large scale IEEE test systems.