Frequency transients analysis in an islanded microgrid

The paper deals with a typical microgrid operating in an islanded mode. The microgrid is energized by a few power sources, namely a mini-hydroelectric plant, a diesel generator set and a photovoltaic field, and supplies both critical and noncritical loads. After modeling the power sources and illustrating both their management and that one of the microgrid, a computer-assisted analysis of the frequency transients in the microgrid under the primary regulation is carried out. The results show that, in certain situations, the frequency exceeds the admissible values for the critical loads. At last, the paper discusses the integration of a battery energy storage system into the microgrid to reduce the frequency excursions notably.

[1]  Xinbo Ruan,et al.  A generalized droop-control scheme for decentralized control of inverter-interfaced microgrids , 2013, 2013 IEEE International Symposium on Circuits and Systems (ISCAS2013).

[2]  Giuseppe Buja,et al.  Novel PLL scheme for grid connection of three-phase power converters , 2011, 8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives.

[3]  Min Zhu.  Electrical Engineering and Control , 2011 .

[4]  Hui Zhang,et al.  Oerview of microgrid management and control , 2011, 2011 International Conference on Electrical and Control Engineering.

[5]  C. S. Demoulias,et al.  Microgrid wireless energy management with energy storage system , 2012, 2012 47th International Universities Power Engineering Conference (UPEC).

[6]  Rudy Setiabudy,et al.  Review of microgrid technology , 2013, 2013 International Conference on QiR.

[7]  A. Feliachi,et al.  Real time load frequency control for an isolated microgrid system , 2012, 2012 North American Power Symposium (NAPS).

[8]  D. Kottick,et al.  Battery energy storage for frequency regulation in an island power system , 1993 .

[9]  S. Rajakaruna,et al.  Simplified voltage and frequency controller based on droop control for the dynamic analysis of a Microgrid , 2012, 2012 22nd Australasian Universities Power Engineering Conference (AUPEC).

[10]  T. Funabashi,et al.  Coordinated control of battery energy storage system and diesel generator for isolated power system stabilization , 2008, 2008 IEEE 2nd International Power and Energy Conference.

[11]  Wei Wang,et al.  A droop control method of microsources based on divided self-adjusting slope coefficient , 2010, 2010 International Conference on Power System Technology.

[12]  J.A. Pecas Lopes,et al.  Defining control strategies for analysing microgrids islanded operation , 2005, 2005 IEEE Russia Power Tech.

[13]  R.H. Lasseter,et al.  The operation of diesel gensets in a CERTS microgrid , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[14]  Graham Coates,et al.  Distributed control approach for small-scale energy zones , 2008 .

[15]  J. Miret,et al.  A wireless controller to enhance dynamic performance of parallel inverters in distributed generation systems , 2004, IEEE Transactions on Power Electronics.