Research on DC Voltage Control Strategies for Typical Four-Terminal HVDC System

Abstract:

The continuous development of alternative energy has put forward higher requirement for electricity transmission. To cope with its fluctuation characteristics, high voltage direct current (HVDC) technology has received more attention. Voltage Source Converter (VSC) based Multi-Terminal High Voltage Direct Current (MTDC) represents the future trend of HVDC technology. This paper mainly focuses on the control strategies of a four-terminal VSC based MTDC power transmission system. The operation characteristic of the system was studied, and the proposed two control strategies, master-slave control strategy and DC voltage droop control strategy, were verified through simulations. The latter control strategy was proved to be performing well under various conditions, including converter station disconnection and faults at AC side of the converter.

• Periodical: Applied Mechanics and Materials (Volume 521)
• Pages: 222-228
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.521.222
• Online since: February 2014
• Authors: Kai Wang*, Hai Shun Sun, Yu Hua, Yuan Liu, Wei Xing Lin, Cheng Hao Li
• Keywords: DC Voltage Droop Control, Master-Slave Control, Multi-Terminal HVDC (MTDC), Voltage Source Converter (VSC)

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