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Energies 2018, 11(3), 488; https://doi.org/10.3390/en11030488

Remote Power Control Injection of Grid-Connected Power Converters Based on Virtual Flux

1
Electrical Engineering Department, Technical University of Catalonia, 08222 Barcelona, Spain
2
Electrical Technology Section, Universiti Kuala Lumpur, British Malaysian Institute, Gombak 53100, Malaysia
3
Department of Engineering, Loyola University of Andalucia, 41014 Seville, Spain
*
Author to whom correspondence should be addressed.
Received: 15 January 2018 / Revised: 3 February 2018 / Accepted: 19 February 2018 / Published: 26 February 2018
(This article belongs to the Special Issue Sustainable and Renewable Energy Systems)

Abstract

Renewable Energy Source (RES)-based power plants need to control the active and reactive power at the Point of Common Connection (PCC) with the grid, in order to comply with the requirements of the Transmission System Operators (TSOs). This point is normally far away from the power converter station, and the cables and step-up transformers have a non-neglectable influence on the delivered power. In order to overcome this drawback, this paper presents a control algorithm that permits one to control remotely the power injected at the PCC, by adjusting the local controller of the Voltage Source Converters (VSCs). In this work, the synchronization with the grid is done based on the Virtual Flux (VF) concept. The results reveals that the VF estimation is able to produce a reliable estimation of the grid voltage in any point of the network, and makes it possible to calculate the necessary current reference for injecting a desired active and reactive power at a point that can be some kilometres away. In this paper the main principle for this remote power control is presented. Likewise, the simulation and experimental results will be shown in order to analyse the effectiveness of the proposed system. View Full-Text
Keywords: voltage sensorless; virtual flux estimation; voltage source converter; proportional resonant current controller; LCL-filter; remote point voltage sensorless; virtual flux estimation; voltage source converter; proportional resonant current controller; LCL-filter; remote point
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Roslan, N.F.; Luna, A.; Rocabert, J.; Candela, J.I.; Rodriguez, P. Remote Power Control Injection of Grid-Connected Power Converters Based on Virtual Flux. Energies 2018, 11, 488.

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