Voltage security in AC microgrids: A power flow-based approach considering droopcontrolled inverters

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hdl:2117/84059
Document typeArticle
Defense date2015-01-01
Rights accessOpen Access
Abstract
This study deals with the problem of voltage security in microgrids. In general, voltage security is an issue for power systems, where the lack of reactive power is a concern. For microgrids a complexity is imposed, since frequency and voltage level deviations may take place by the operation of droop-controlled inverters. This study incorporates the load margin calculation into a microgrid structure. For this purpose, a special power flow program is developed in order to consider the effects of the droop-controlled inverters. Simulation results are obtained with the help of an islanded distribution system with only generators coupled by droop-controlled inverters, so the proposed methodology may be tested and discussed.
CitationAntonio Carlos, Z., Santos, M., Castilla, M., Miret, J., Garcia de Vicuña, J., Marujo, D. Voltage security in AC microgrids: A power flow-based approach considering droopcontrolled inverters. "IET renewable power generation", 01 Gener 2015, vol. 9, p. 954-960.
ISSN1752-1416
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