Implementation of a Hybrid Distributed/Centralized Real-Time Monitoring System for a DC/AC Microgrid With Energy Storage Capabilities

This paper proposes a combined distributed/centralized architecture for the control and monitoring of a hybrid dc/ac microgrid (MG) with energy storage capabilities. The monitoring system is based on an own developed C++ framework for the measurement and real-time state estimation of the MG. Calculations running at sampled values frequency (10 kHz) are implemented into a set of distributed measurement and processing units, which have a TCP/IP communication link with a central server running the power flow algorithm. The architecture is fully scalable, with the only restrictions of the signal processing capabilities of the distributed units, LAN bandwidth, and central server calculation capabilities. The proposed system includes the hardware and software architecture for the monitoring of the MG, the communications scheme, the implementation of real-time algorithms for grid state estimation, a graphical user interface including different visualization alternatives, and data storing/retrieving capabilities.

[1]  Alfredo Vaccaro,et al.  An Integrated Framework for Smart Microgrids Modeling, Monitoring, Control, Communication, and Verification , 2011, Proceedings of the IEEE.

[2]  Fangxing Li,et al.  Coordinated V-f and P-Q Control of Solar Photovoltaic Generators With MPPT and Battery Storage in Microgrids , 2014, IEEE Transactions on Smart Grid.

[3]  Taha Selim Ustun,et al.  Modeling of a Centralized Microgrid Protection System and Distributed Energy Resources According to IEC 61850-7-420 , 2012, IEEE Transactions on Power Systems.

[4]  Bassam Mohamed,et al.  BFS Algorithm for Voltage-Constrained Meshed DC Traction Networks With Nonsmooth Voltage-Dependent Loads and Generators , 2016, IEEE Transactions on Power Systems.

[5]  Duncan A. Campbell,et al.  Performance Analysis of IEC 61850 Sampled Value Process Bus Networks , 2013, IEEE Transactions on Industrial Informatics.

[6]  Pablo Arboleya,et al.  Unbalanced Power Flow in Distribution Systems With Embedded Transformers Using the Complex Theory in $\alpha \beta 0\;$ Stationary Reference Frame , 2014, IEEE Transactions on Power Systems.

[7]  Vassilios G. Agelidis,et al.  Distributed Cooperative Control of Microgrid Storage , 2015, IEEE Transactions on Power Systems.

[8]  G. Goertzel.  An Algorithm for the Evaluation of Finite Trigonometric Series , 1958 .

[9]  S. Ali Pourmousavi,et al.  Real-time central demand response for primary frequency regulation in microgrids , 2013, 2013 IEEE PES Innovative Smart Grid Technologies Conference (ISGT).

[10]  Juan C. Vasquez,et al.  Multiagent based distributed control for state-of-charge balance of distributed energy storage in DC microgrids , 2014, IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society.

[11]  Farzam Nejabatkhah,et al.  Overview of Power Management Strategies of Hybrid AC/DC Microgrid , 2015, IEEE Transactions on Power Electronics.

[12]  Narsa Reddy Tummuru,et al.  Dynamic Energy Management of Renewable Grid Integrated Hybrid Energy Storage System , 2015, IEEE Transactions on Industrial Electronics.

[13]  Juan C. Vasquez,et al.  A Control Architecture to Coordinate Renewable Energy Sources and Energy Storage Systems in Islanded Microgrids , 2015, IEEE Transactions on Smart Grid.

[14]  Hongbin Sun,et al.  An Extension of FBS Three-Phase Power Flow for Handling PV Nodes in Active Distribution Networks , 2014, IEEE Transactions on Smart Grid.

[15]  Josep M. Guerrero,et al.  Advanced Control Architectures for Intelligent Microgrids—Part I: Decentralized and Hierarchical Control , 2013, IEEE Transactions on Industrial Electronics.

[16]  Edith Clarke,et al.  Determination of Instantaneous Currents and Voltages by Means of Alpha, Beta, and Zero Components , 1951, Transactions of the American Institute of Electrical Engineers.

[17]  S. Mohagheghi,et al.  Communication protocols and networks for power systems-current status and future trends , 2009, 2009 IEEE/PES Power Systems Conference and Exposition.

[18]  F.M. Cleveland,et al.  IEC 61850-7-420 communications standard for distributed energy resources (DER) , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[19]  Juan C. Vasquez,et al.  Intelligent Distributed Generation and Storage Units for DC Microgrids—A New Concept on Cooperative Control Without Communications Beyond Droop Control , 2014, IEEE Transactions on Smart Grid.

[20]  Josep M. Guerrero,et al.  Microgrids in active network management—Part I: Hierarchical control, energy storage, virtual power plants, and market participation , 2014 .

[21]  David M. Laverty,et al.  Telecommunications for Smart Grid: Backhaul solutions for the distribution network , 2010, IEEE PES General Meeting.

[22]  G. C. Paap,et al.  Symmetrical components in the time domain and their application to power network calculations , 2000 .

[23]  Taskin Koçak,et al.  A Survey on Smart Grid Potential Applications and Communication Requirements , 2013, IEEE Transactions on Industrial Informatics.

[24]  Taskin Koçak,et al.  Smart Grid Technologies: Communication Technologies and Standards , 2011, IEEE Transactions on Industrial Informatics.

[25]  Qiang Fu,et al.  Microgrid Generation Capacity Design With Renewables and Energy Storage Addressing Power Quality and Surety , 2012, IEEE Transactions on Smart Grid.

[26]  A. Kalam,et al.  The Application-View Model of the International Standard IEC 61850 , 2009, IEEE Transactions on Power Delivery.

[27]  Alex Q. Huang,et al.  System Integration and Hierarchical Power Management Strategy for a Solid-State Transformer Interfaced Microgrid System , 2014, IEEE Transactions on Power Electronics.