Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila

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Browsing Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila by Author "Aguado Alonso, Mónica"

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    PublicationOpen Access
    A modified control scheme of droop-based converters for power stability analysis in microgrids
    (Hindawi / Wiley, 2015) Usunáriz López, Igor; Santamaría Rubio, Mikel; Mentesidi, Konstantina; Aguado Alonso, Mónica; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    Microgrid is principally an active distribution network since it aggregates numerous DG systems through their interface converters and different loads at distribution level. This paper discusses the power sharing in autonomous AC-microgrid infrastructure by common P-f and Q-V droop control schemes on parallel-connected converters. Moreover, this research work proposes a frequency and voltage restoration mechanism through the utilization of secondary control. Experimental results are presented for a two-50 kVA parallel-connected converter-based system, demonstrating the necessity for the proper operation of the secondary control in order to monitor the system’s capability to withstand any perturbations that may occur and to ensure the system’s security.
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    PublicationOpen Access
    The potential integration of distributed generation in medium & low voltage grids: the applicability of power flow and hardware-in-the-loop tools for simulation and validation
    (2014) Mentesidi, Konstantina; Aguado Alonso, Mónica; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    The current thesis is dedicated to the penetration of DG technology into a MV/LV distribution network that may loosely represent an Island or autonomous power system since MV/LV levels are of high interest as most of distributed energy sources (DER) will be connected there. Two simulation tools will be utilised throughout this work to demonstrate the implementation of DG technology on distribution networks; the Siemens PTI, PSS/E software tool that allows for grid penetration and analysis studies and RTDS/RSCAD program that allows for real time simulations and execution of Power Hardware-in-the-loop (PHIL) tests.
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    PublicationOpen Access
    Real-time simulation technique of a microgrid model for DER penetration
    (EAI, 2014) Mentesidi, Konstantina; Rikos, Evangelos; Kleftakis, Vasilis; Kotsampopoulos, Panos; Aguado Alonso, Mónica; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    Comprehensive analysis of Distributed Energy Resources (DER) integration requires tools that provide computational power and flexibility. In this context, throughout this paper PHIL simulations are performed to emulate the energy management system of a real microgrid including a diesel synchronous machine and inverter-based sources. Moreover, conventional frequency and voltage droops were incorporated into the respective inverters. The results were verified at the real microgrid installation in the Centre for Renewable Energy Sources (CRES) premises. This research work is divided into two steps: A) Real time in RSCAD/RTDS and Power Hardware-in-the-Loop (PHIL) simulations where the diesel generator´s active power droop control is evaluated, the battery inverter´s droop curves are simulated and the load sharing for parallel operation of the system´s generation units is examined. B) microgrid experiments during which various tests were executed concerning the diesel generator and the battery inverters in order to examine their dynamic operation within the LV islanded power system.