Comparative Analysis of Control Systems of Distribution Static Synchronous Compensator

Recently, there has been an increase in the introduction of renewable energy sources in the grid, and with that, an increased focus on power quality issues. Flexible Alternating Current Transmission Systems (FACTS) solve a number of such objectives, such as voltage and phase regulation, along with improvement in power transfer capabilities. The Distributed Static Synchronous Compensator (DSTATCOM) is a shunt connected FACTS device (STATCOM) that is present in the distribution side for various purposes such as reactive power compensation, voltage regulation and harmonic mitigation. Proportional Integral (PI) control and fuzzy logic control are two widely used control schemes for the DSTATCOM. This paper compares the two control schemes with respect to reactive power compensation and DC link voltage regulation. Further, the harmonic mitigation properties of the DSTATCOM are also simulated.