Modeling of STATCOM with Six Pulse SPWM based VSC and its Power Flow Study

摘要

One of the main reasons of the voltage instability is the reactive power limit of the system. To improve system reactive power handling capacity Flexible AC Transmission Systems (FACTS) is the best solution which can prevent voltage instability. In this paper one of the FACTS devices Static Synchronous Compensator (STACOM) is designed with six pulse Sinusoidal Pulse Width Modulation (SPWM) based Voltage Source Converter (VSC); this can remain all the advantages of the ideal switch and eliminate its disadvantages. This model is designed in Matlab/ Simulink software and characteristics are analyzed. The STATCOM power flow equations are developed for this model and total generation, total load and line losses are evaluated by using Newton-Raphson method power flow program which is developed in MATLAB of the standard IEEE 30 bus system.