Voltage stability in low voltage microgrids in aspects of active and reactive power demand

Open access


Low voltage microgrids are autonomous subsystems, in which generation, storage and power and electrical energy consumption appear. In the paper the main attention has been paid to the voltage stability issue in low voltage microgrid for different variants of its operation. In the introduction a notion of microgrid has been presented, and also the issue of influence of active and reactive power balance on node voltage level has been described. Then description of voltage stability issue has been presented. The conditions of voltage stability and indicators used to determine voltage stability margin in the microgrid have been described. Description of the low voltage test microgrid, as well as research methodology along with definition of considered variants of its operation have been presented further. The results of exemplary calculations carried out for the daily changes in node load of the active and reactive power, i.e. the voltage and the voltage stability margin indexes in nodes have been presented. Furthermore, the changes of voltage stability margin indexes depending on the variant of the microgrid operation have been presented. Summary and formulation of conclusions related to the issue of voltage stability in microgrids have been included at the end of the paper.

[1] Lasseter R., Akhil A., Marnay Ch. et al., White Paper on Integration of Distributed Energy Resources: The CERTS MicroGrid Concept. [Online]. Available: http://certs.lbl.gov/pdf/50829.pdf, accessed April (2002).

[2] Hatziargyriou N.D., Asano A., Iravani R. et al., IEEE Power & Energy Magazine 4(5): 78-94 (2007).

[3] Kroposki B., Lasseter R., Ise T. et al., Making microgrids work. IEEE Power & Energy Magazine 3(6): 41-53 (2008).

[4] Hatziargyriou N.D., Dimeas A.L., Tsikalakis A.G. et al., Management of microgrids in market environment. CD Proc. of the Int. Conf. on Future Power Systems, Amsterdam, 7 pp., (2005).

[5] Katiraei F., Iravani R., Hatziargyriou N.D., Dimeas A.L., Microgrids management. Control and operation aspects of microgrids. IEEE Power & Energy Magazine 3(6): 54-65 (2008).

[6] Parol M., Księżyk K., Optimum control in microgrids. Pendrive Proc. of the Second Int. Youth Conf. on Energetics, Budapest, 6 pp., (2009).

[7] Parol M., Wójtowicz T., Optimization of Exchange of Electrical Energy between Microgrid and Electricity Utility Distribution Network. CD Proc. of the Int. Symposium on Modern Electric Power Systems - MEPS‘10, Wrocław, 6 pp., (2010).

[8] Machowski J., Regulation and stability in electric power system. Warsaw, Publishing House of Warsaw University of Technology (2007), in Polish.

[9] Majumder R., Some aspects of stability in microgrids. IEEE Transactions on Power Systems 3(28): 3243-3252 (2013).

[10] Tamersi A., Radman G., Aghazadeh M., Enhancement of microgrid dynamic voltage stability using microgrid voltage stabilizer. Southeastcon, 2011 Proceedings of IEEE, Nashville, pp. 368-373 (2011).

[11] Niranen J., Komsi R., Routimo M. et al., Experiences from a back-to-back converter fed village microgrid. Proc. of the Conf. on Innovative Smart Grid Technologies Conference Europe (ISGT Europe), Gothenburg, pp. 1-5 (2010).

[12] Papathanassiou S., Hatziargyriou N.D., Strunz K., A benchmark low voltage microgrid network. Proc. of the CIGRE Symposium on Power Systems with Dispersed Generation, Athens, 8 pp., (2005).

[13] PowerFactory v. 14.1. Manual (DIgSILENT Technical Documentation).

[14] Księżyk K., Parol M., Steady states analysis of micro-grids operation. Przegląd Elektrotechniczny (Electrical Review) 11(84): 14-19 (2008).

[15] Rokicki Ł., Voltage Stability in LV microgrids, Master Thesis (in Polish). Faculty of Electrical Engineering, Warsaw University of Technology (2013).

Archives of Electrical Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.71

SCImago Journal Rank (SJR) 2016: 0.238
Source Normalized Impact per Paper (SNIP) 2016: 0.535


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 171 171 7
PDF Downloads 107 107 9