Modelling and Control of a Three-Level Diode-Clamped Medium Voltage Distribution Static Synchronous Compensator using Space Vector Pulse Width Modulation

Authors : Fatih EROĞLU, Husnain Ul Haseeb KAZMI, Ahmet Mete VURAL

Pages : 106-118

Doi:10.35378/gujs.576037

View : 21 | Download : 6

Publication Date : 2020-03-01

Article Type : Research Paper

Abstract :Efficient utilization of power networks under extreme voltage sags and swells and reducing the losses are widely recognized as the most important issues in energy industry. Power electronic converter based flexible AC transmission system insert ignore into journalissuearticles values(FACTS); devices play a significant role in power flow control, power quality improvement, voltage regulation and efficient energy utilization. Distribution static synchronous series compensator insert ignore into journalissuearticles values(D-STATCOM); is a FACTS device and it compensates for voltage sags and swells by injecting or absorbing reactive power to/from the power network. Modulation of D-STATCOMs is mostly based on pulse width modulation insert ignore into journalissuearticles values(PWM); techniques and space vector PWM insert ignore into journalissuearticles values(SV-PWM); is attracting considerable interest due to its better DC utilization and wide linear modulation range. In this paper, a three-level SV-PWM is suggested for the modulation of D-STATCOM which is based on a three-phase diode-clamped inverter insert ignore into journalissuearticles values(DCI);. A grid connected three-phase power system feeding a 1 MW and 500 kvar load is designed in simulation environment and D-STATCOM is tested under voltage sags and swells occurring on the generation side. Results demonstrate that D-STATCOM successfully injects/absorbs reactive power to/from the system under fluctuating grid conditions
Keywords : DC AC power converters, D STATCOM, Space vector PWM, Power system control, Reactive Power Control