• V. TAMILSELVAN
• MANDADI VEENA SHREE

the power quality associated problems are voltage sag, flicker, voltage imbalance, interruption and harmonics problems which results in the malfunctioning of equipments in the industries by affecting the microprocessor based loads, sensitive electric components which are highly sensitive to voltage level fluctuation. The power consumed by the heavy load creates unsymmetrical currents which results in reduced power quality in the electrical grid. The stimulating functions of Flexible AC Transmission system (FACTS) estimate the critical clearing time, voltage regulation, steady state power flow and oscillation damping control. The main objective of this paper is the application of modular multilevel cascade (MMC) converter based Static synchronous Compensator (STATCOM) for reactive-power control and improved power quality. The complete simulation of this system is performed in the MATLAB software and the PI control is used for the controlling.

Flexible AC Transmission system (FACTS), Static synchronous Compensator (STATCOM), modular multilevel cascade (MMC), insulated-gate bipolar transistors (IGBT)

"STUDY ON POWER QUALITY IMPROVEMENT BY USING MODULAR MULTILEVEL CASCADE CONVERTER BASED STATCOM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.210-218, December-2018, Available :http://www.jetir.org/papers/JETIR1812727.pdf

"STUDY ON POWER QUALITY IMPROVEMENT BY USING MODULAR MULTILEVEL CASCADE CONVERTER BASED STATCOM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp210-218, December-2018, Available at : http://www.jetir.org/papers/JETIR1812727.pdf