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Adaptive Volt-Var Control Algorithm to Grid Strength and PV Inverter Characteristics

Authors: Toni Cantero Gubert; Alba Colet; Lluc Canals Casals; Cristina Corchero; José Luís Domínguez-García; Amelia Alvarez de Sotomayor; William Martin; +2 Authors

Adaptive Volt-Var Control Algorithm to Grid Strength and PV Inverter Characteristics

Abstract

The high-penetration of Distributed Energy Resources (DER) in low voltage distribution grids, mainly photovoltaics (PV), might lead to overvoltage in the point of common coupling, thus, limiting the entrance of renewable sources to fulfill the requirements from the network operator. Volt-var is a common control function for DER power converters that is used to enhance the stability and reliability of the voltage in the distribution system. In this study, a centralized algorithm provides local volt-var control parameters to each PV inverter, which are based on the electrical grid characteristics. Because accurate information of grid characteristics is typically not available, the parametrization of the electrical grid is done using a local power meter data and a voltage sensitivity matrix. The algorithm has different optimization modes that take into account the minimization of voltage deviation and line current. To validate the effectiveness of the algorithm and its deployment in a real infrastructure, the solution has been tested in an experimental setup with PV emulators under laboratory conditions. The volt-var control algorithm successfully adapted its parameters based on grid topology and PV inverter characteristics, achieving a voltage reduction of up to 25% of the allowed voltage deviation.

Country
Spain
Keywords

Standards, :Energies [Àrees temàtiques de la UPC], microgrids, Reactive power, TJ807-830, Algorismes, TD194-195, Photovoltaic power generation, Renewable energy sources, Distributed power generation, distributed power generation, Àrees temàtiques de la UPC::Energies, Low-voltage, voltage regulation, GE1-350, Test facilities, Microgrids, reactive power, Photovoltaic systems, Optimization methods, automotive_engineering, Energia solar fotovoltaica, low-voltage, Environmental effects of industries and plants, Microxarxes (Xarxes elèctriques intel·ligents), Microgrids (Xarxes elèctriques intel·ligents), test facilities, Electric power, Environmental sciences, Voltage regulation, photovoltaic systems, standards, Energia elèctrica, optimization methods, Algorithms

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
downloads
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7
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