A new approach for predictive control system design to improve power factor and reduce harmonic current injection using D-STATCOM

Harmonics and power factor control are two key points in steady state operation of the electrical power systems. D-STATCOM and its control system can be used to improve the power system performance in the case of power quality issues. Thus in this paper, a new approach of predictive control system based on discrete state space system is used to control the instantaneous power compensator of D-STATCOM for compensating harmonics and improve power factor is presented. The proposed control method is useful to limit some power quality disturbances and also some steady state properties. To evaluate the performance of the proposed control methods and compare them with conventional control methods, 22 kV distribution network with a nonlinear load such as a three-phase rectifier and also added inductive load is examined. Simulation result indicates that the proposed control strategy improved the power factor and reducing THD compared to the conventional control method.

[1]  Yifan Yu,et al.  Heuristic Model Predictive Modulation for High-Power Cascaded Multilevel Converters , 2016, IEEE Transactions on Industrial Electronics.

[2]  Mohammad Reza Khalghani,et al.  A novel control system design to improve LVRT capability of fixed speed wind turbines using STATCOM in presence of voltage fault , 2016 .

[3]  A. Vural.  Self-capacitor voltage balancing method for optimally hybrid modulated cascaded H-bridge D-STATCOM , 2016 .

[4]  Mohammad Reza Khalghani,et al.  A new approach in MPPT for photovoltaic array based on Extremum Seeking Control under uniform and non-uniform irradiances , 2013 .

[5]  Guohong Wu,et al.  Techno economic assessment of different electrochemical energy storage systems for use in Khorasan, Iran , 2015, 2015 IEEE International Telecommunications Energy Conference (INTELEC).

[6]  Hirofumi Akagi,et al.  A Phase-Shifted PWM D-STATCOM Using a Modular Multilevel Cascade Converter (SSBC)—Part II: Zero-Voltage-Ride-Through Capability , 2015, IEEE Transactions on Industry Applications.

[7]  Hirofumi Akagi,et al.  Instantaneous power theory and applications to power conditioning , 2007 .

[8]  Reza Keypour,et al.  New fuzzy control system design for maximum power point tracking of wind turbine , 2013, 18th Electric Power Distribution Conference.

[9]  T. Kulworawanichpong,et al.  Instantaneous power control of D-STATCOM with consideration of power factor correction , 2010, ECTI-CON2010: The 2010 ECTI International Confernce on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology.

[10]  Narain G. Hingorani,et al.  Introducing custom power , 1995 .