Stability characterization of inverter based microgrids considering configuration changes

This paper studies the effect of configuration changes to a modular inverter-based microgrid using an inertia index. The inertia index is developed based on an analogy between the inertia constant of synchronous generators and control parameters of droop controlled inverters. The effect of modular operation on transient performance of microgrid frequency is studied by using the considered index for an islanded inverter-based microgrid. Based on the inertia index, a control approach that mitigates the change in a microgrid frequency dynamics caused by modular operation is also explored. The effectiveness of the inertia index and control approach is also verified.

[1]  Sanjib Kumar Panda,et al.  A Plug and Play Operational Approach for Implementation of an Autonomous-Micro-Grid System , 2012, IEEE Transactions on Industrial Informatics.

[2]  A. Kwasinski,et al.  Identification of Feasible Topologies for Multiple-Input DC–DC Converters , 2009, IEEE Transactions on Power Electronics.

[3]  Jih-Sheng Lai,et al.  A novel power calculation method for droop-control microgrid systems , 2012, 2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[4]  Luiz A. C. Lopes,et al.  Self-Tuning Virtual Synchronous Machine: A Control Strategy for Energy Storage Systems to Support Dynamic Frequency Control , 2014, IEEE Transactions on Energy Conversion.

[5]  Deepak Divan,et al.  Transient droop for improved transient load sharing in microgrids , 2014, 2014 IEEE Energy Conversion Congress and Exposition (ECCE).

[6]  H. H. Zeineldin,et al.  Enhancement of islanded droop-controlled microgrid performance via power filter design , 2014, 2014 IEEE PES General Meeting | Conference & Exposition.

[7]  Alejandro D. Dominguez-Garcia,et al.  Estimation of Photovoltaic System Reliability and Performance Metrics , 2012, IEEE Transactions on Power Systems.

[8]  Juan C. Vasquez,et al.  Hierarchical Control of Droop-Controlled AC and DC Microgrids—A General Approach Toward Standardization , 2009, IEEE Transactions on Industrial Electronics.

[9]  Johannes Schiffer,et al.  Synchronization of droop-controlled microgrids with distributed rotational and electronic generation , 2013, 52nd IEEE Conference on Decision and Control.

[10]  Math Bollen,et al.  Integration of Distributed Generation in the Power System , 2008 .

[11]  B. Francois,et al.  Dynamic Frequency Control Support by Energy Storage to Reduce the Impact of Wind and Solar Generation on Isolated Power System's Inertia , 2012, IEEE Transactions on Sustainable Energy.

[12]  Alexis Kwasinski,et al.  Distribution interface for microgrid operation and expansion with local energy management , 2014, 2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems (PEDG).

[13]  Jon Are Suul,et al.  Equivalence of Virtual Synchronous Machines and Frequency-Droops for Converter-Based MicroGrids , 2014, IEEE Transactions on Smart Grid.

[14]  T.C. Green,et al.  Modeling, Analysis and Testing of Autonomous Operation of an Inverter-Based Microgrid , 2007, IEEE Transactions on Power Electronics.

[15]  Mahesh S. Illindala,et al.  Battery cycle life balancing in a microgrid through flexible distribution of energy and storage resources , 2014 .

[16]  Paul Smith,et al.  Studying the Maximum Instantaneous Non-Synchronous Generation in an Island System—Frequency Stability Challenges in Ireland , 2014, IEEE Transactions on Power Systems.

[17]  E.F. El-Saadany,et al.  Adaptive Decentralized Droop Controller to Preserve Power Sharing Stability of Paralleled Inverters in Distributed Generation Microgrids , 2008, IEEE Transactions on Power Electronics.

[18]  Yushi Miura,et al.  Dynamic characteristics and stability comparisons between virtual synchronous generator and droop control in inverter-based distributed generators , 2014, 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).

[19]  Fainan Hassan,et al.  Integration of Distributed Generation in the Power System: Bollen/Integration of Distributed Generation , 2011 .

[20]  M. C. Chandorkar,et al.  Improvement of Transient Response in Microgrids Using Virtual Inertia , 2013, IEEE Transactions on Power Delivery.