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

Yanbo Che, Wenxun Li, Xialin Li, Jinhuan Zhou, Shengnan Li and Xinze Xi
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Yanbo Che: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Wenxun Li: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Xialin Li: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Jinhuan Zhou: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Shengnan Li: Electric Power Research Institute of Yunnan Power Grid Co. Ltd., Kunming 650217, China
Xinze Xi: Electric Power Research Institute of Yunnan Power Grid Co. Ltd., Kunming 650217, China

Energies, 2017, vol. 10, issue 10, 1-14

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.

Keywords: coordinated control strategy; MVDC (Medium Voltage Direct Current); PV (PhotoVoltaic); VSC (Voltage Source Converter) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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