Photovoltaic DG with accumulation, active and reactive power control for grid-connected and intentional islanding operations

Considering the new challenges in the energetic scenario around the world, this paper proposes the implementation of a micro-grid with photovoltaic generation and local accumulation, considering its capability to operate connected or islanded from the utility grid. The system will supply power to utility grid and local loads through six single-phase inverters in wye configuration, three of them operating in islanded or grid-tie mode and other three inverters operating only in grid-tie mode. Supporting the stability and power quality for the utility grid, lead-acid batteries afford the backup energy allowing the electric power supply for the utility in absence of photovoltaic generation. While most inverters for distributed generation (DG) are designed to provide active power and to operate with a fixed power factor, in this paper the inverters are used to dynamically control the active and reactive power supply. Consequently, the system is able to perform as an active compensator at the point of common coupling, improving the power quality. This DG system is complemented with software for power flow monitoring and databases for long term analysis.

[1]  Jih-Sheng Lai,et al.  High-Efficiency MOSFET Inverter with H6-Type Configuration for Photovoltaic Nonisolated AC-Module Applications , 2011, IEEE Transactions on Power Electronics.

[2]  Chris Underwood,et al.  A modelling method for building-integrated photovoltaic power supply , 2002 .

[3]  Arash Akhlaghi,et al.  Performance analysis of the Slip mode frequency shift islanding detection method under different inverter interface control strategies , 2016, 2016 IEEE Power and Energy Conference at Illinois (PECI).

[4]  R. Faranda,et al.  MPPT techniques for PV Systems: Energetic and cost comparison , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[5]  Nikos D. Hatziargyriou,et al.  microgrids [guest editorial] , 2008 .

[6]  K. A. Folly,et al.  Energy storage technologies for small scale wind conversion system , 2012, 2012 IEEE Power Electronics and Machines in Wind Applications.

[7]  G. Ivensky,et al.  Optimization of the auxiliary switch components in a flying capacitor ZVS PWM converters , 1995, Eighteenth Convention of Electrical and Electronics Engineers in Israel.

[8]  F.P. Marafao,et al.  Comparative analysis of Synchronization Algorithms based on PLL, RDFT and Kalman Filter , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[9]  Juan C. Vasquez,et al.  Economic power dispatch of distributed generators in a grid-connected microgrid , 2015, 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia).

[10]  Hazlie Mokhlis,et al.  Emergence of energy storage technologies as the solution for reliable operation of smart power systems: A review , 2013 .

[11]  Mohd R. Mohamed,et al.  Redox flow batteries for hybrid electric vehicles: Progress and challenges , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[12]  P.L. Villenueve,et al.  Concerns generated by islanding [electric power generation] , 2004, IEEE Power and Energy Magazine.

[13]  Ioan Serban,et al.  Control Strategy of Three-Phase Battery Energy Storage Systems for Frequency Support in Microgrids and with Uninterrupted Supply of Local Loads , 2014, IEEE Transactions on Power Electronics.

[14]  Carlos A. Canesin,et al.  Evaluation of the Main MPPT Techniques for Photovoltaic Applications , 2013, IEEE Transactions on Industrial Electronics.

[15]  Carlos A. Canesin,et al.  Evaluation of MPPT techniques for photovoltaic applications , 2011, 2011 IEEE International Symposium on Industrial Electronics.