A new and simple SRF based power angle control for UPQCdg to integrate solar PV into grid

In this paper, a new Power Angle Control (PAC) method for Unified Power Quality Conditioner with Distributed Generation (UPQCdg) is proposed for effective grid integration of solar PV. In UPQCdg shunt Active Power Filter (APF) feeds power from solar PV to load, apart from supplying reactive power demand, leading to increased rating of shunt APF. PAC method aims at effective utilization of series and shunt APFs of UPQCdg to reduce their ratings. In this work a new power angle estimation method based on instantaneous power calculation is proposed. Proposed estimation technique is simple, robust and utilizes already available measurements of UPQCdg. Performance of proposed system is tested in the presence of non-linear and reactive loads with detailed model of solar PV generation system. Dynamic performance of system is studied during grid disturbances such as voltage sag and swell, solar irradiation variation, and change in load. MATLAB/Simulink based simulations validate effectiveness of proposed method.

[1]  Kamal Al-Haddad,et al.  Power Quality: Problems and Mitigation Techniques , 2014 .

[2]  Ambrish Chandra,et al.  UPQC-S: A Novel Concept of Simultaneous Voltage Sag/Swell and Load Reactive Power Compensations Utilizing Series Inverter of UPQC , 2011, IEEE Transactions on Power Electronics.

[3]  Feng Gao,et al.  A unified power quality conditioner for the fault ride-through operation of photovoltaic power station , 2014, 2014 International Power Electronics and Application Conference and Exposition.

[4]  Mohammad Hassan Moradi,et al.  Combined photovoltaic and unified power quality controller to improve power quality , 2013 .

[5]  Anup Kumar Panda,et al.  Management of reactive power sharing & power quality improvement with SRF-PAC based UPQC under unbalanced source voltage condition , 2017 .

[6]  Pradyumn Chaturvedi,et al.  Performance of SRF-UVTG based UPQCDG for integration of solar PV with non-linear loads , 2016, 2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[7]  Mahesh K. Mishra,et al.  Effective utilization of unified power quality conditioner for interconnecting PV modules with grid using power angle control method , 2013 .

[8]  Vinod Khadkikar.  Fixed and variable power angle control methods for unified power quality conditioner: operation, control and impact assessment on shunt and series inverter kVA loadings , 2013 .

[9]  V. Khadkikar,et al.  Enhancing Electric Power Quality Using UPQC: A Comprehensive Overview , 2012, IEEE Transactions on Power Electronics.

[10]  Anup Kumar Panda,et al.  Performance analysis of a 3 phase 4 wire UPQC system based on PAC based SRF controller with real time digital simulation , 2016 .

[11]  A. Chandra,et al.  A simple new control technique for unified power quality conditioner (UPQC) , 2004, 2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951).

[12]  Guihua Liu,et al.  An Advanced Universal Power Quality Conditioning System and MPPT method for grid integration of photovoltaic systems , 2015 .

[13]  A. H. M. Yatim,et al.  Modelling and simulation of maximum power point tracking of photovoltaic system in Simulink model , 2012, 2012 IEEE International Conference on Power and Energy (PECon).

[14]  Marcelo Gradella Villalva,et al.  Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays , 2009, IEEE Transactions on Power Electronics.

[15]  Amit Shrivastava,et al.  Power Quality Enhancement Using UPQC connected with PV Arrays , 2015, 2015 Fifth International Conference on Communication Systems and Network Technologies.

[16]  Bhim Singh,et al.  Dynamic performance of solar PV integrated UPQC-P for critical loads , 2015, 2015 Annual IEEE India Conference (INDICON).