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Energies 2017, 10(10), 1670; https://doi.org/10.3390/en10101670

An Improved Coordinated Control Strategy for PV System Integration with VSC-MVDC Technology

1
Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
2
Electric Power Research Institute of Yunnan Power Grid Co. Ltd., Kunming 650217, China
*
Author to whom correspondence should be addressed.
Academic Editor: Tapas Mallick
Received: 14 September 2017 / Revised: 9 October 2017 / Accepted: 18 October 2017 / Published: 22 October 2017
(This article belongs to the Section Electrical Power and Energy System)
View Full-Text   |   Download PDF [6263 KB, uploaded 22 October 2017]   |  

Abstract

The rapid development of renewable energy calls for feasible and reliable technologies to transmit and integrate power into grids. Voltage Source Converter (VSC)- Direct Current (DC) technology is considered as a promising solution for its independent control of active and reactive power. Modeling and coordinated control of a large-scale concentrating photovoltaic integration system with VSC-MVDC (Voltage Source Converter-Medium Voltage Direct Current) technology have been investigated in this paper. The average controlled-source model of PhotoVoltaic (PV) integration system is firstly established. Then, a novel control strategy without fast communication is proposed to improve the reliability of the coordinated control system. An extra voltage loop is added to the basic control block, which is able to assure stable operation of the PV system in various conditions. Finally, the proposed control strategy is verified with simulation results. View Full-Text
Keywords: coordinated control strategy; MVDC (Medium Voltage Direct Current); PV (PhotoVoltaic); VSC (Voltage Source Converter) coordinated control strategy; MVDC (Medium Voltage Direct Current); PV (PhotoVoltaic); VSC (Voltage Source Converter)
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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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Che, Y.; Li, W.; Li, X.; Zhou, J.; Li, S.; Xi, X. An Improved Coordinated Control Strategy for PV System Integration with VSC-MVDC Technology. Energies 2017, 10, 1670.

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