VSC Based DSTATCOM & Pulse-width modulation for Power Quality Improvement

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2011 by IJETT Journal
Volume-2 Issue-2                          
Year of Publication : 2011
Authors :Rodda Shobha Rani, B. Jyothi


Rodda Shobha Rani, B. Jyothi."VSC Based DSTATCOM & Pulse-width modulation for Power Quality Improvement". International Journal of Engineering Trends and Technology (IJETT),V2(2):38-41 Sep to Oct 2011. ISSN:2231-5381. www.ijettjournal.org. Published by Seventh Sense Research Group.


We proposed voltage - sourced converter (VSC) with Pulse - width modulation (PWM) provides a faster control that is required for flicker mitigation purpose. The voltage regulation in the distribution feeder is improved by instal ling a shunt compensator. The proposed DSTATCOM is modeled and its performance is simulated and verified for power factor correction and voltage regulation along with neutral current compensation, harmonic elimination and load balancing with linear loads a nd non - linear loads. The three phase three wire Distribution Static Compensator (DSTATCOM) is proposed for power quality improvement. DSTATCOM is based on a three leg VSC and is controlled to compensate reactive power, harmonic current and unbalances in th e load. IGBT based VSC is capacitor supported and is controlled for the required compensation of the load current


[1] IEEE Recommended Practices and Requirements for Harmonics Fig. 7 Load current and the harmonic spectrum Control in Electric Power Systems , IEEE Std. 519, 1992.
[2] H. Akagi, E H Watanabe and M Aredes, Instantaneous powertheory and applications to power conditioning , John Wiley & Sons,New Jersey, USA, 2007.
[3] H. Fugi ta and H. Akagi, “Voltage - regulation performance of a shunt active filter intended for installation on a power distribution system,” IEEE Trans. on Power Electron. , vol. 22, no.1, pp. 1046 - 1053, May 2007.
[4] C. Schauder et al. , “AEP UPFC project: Install ation, commissioning and operation of the - 160MVA STATCOM (Phase I),” IEEE Transactions on Power Delivery , vol.13, pp. 1530 – 1535, Oct. 1998.
[5] I. Papic, “Power Quality improvement using distribution static compensator with energy storage system,” Procee dings of 9th International Conference on Harmonicsand. Quality Power , pp. 916 – 920, 2000.
[6] O. A. Lara and E. Acha, “Modeling and analysis of custom power systems by PSCAD/EMTDC,” IEEE Transactions on Power Delivery, vol. 17, no. 1, pp. 266 - 272, 2002.
[7] M. K. Mishra , A. Ghosh and A. Joshi, “Operation of a DSTATCOM in voltage control mode,” IEEE Transactions on Power Delivery , vol. 18, no. 1, 2003.

Distribution Static Compensator, Pulse - width modulation, voltage - sourced converter .