LIU Jingjia,MEI Hongming,LIU Shu,et al.Planned valve group entry/exit control method for UHV multi-terminal hybrid HVDC system[J].Electric Power Automation Equipment,2019,39(09):158-165.
LIU Jingjia,MEI Hongming,LIU Shu,et al.Planned valve group entry/exit control method for UHV multi-terminal hybrid HVDC system[J].Electric Power Automation Equipment,2019,39(09):158-165.DOI: 10.16081/j.epae.201909032.
Planned valve group entry/exit control method for UHV multi-terminal hybrid HVDC system
The existing valve group entry/exit control strategies are only suitable for two-terminal LCC-UHVDC(Line Commutated Converter Ultra-High Voltage DC) transmission system,but cannot be used in VSC-UHVDC(Voltage Source Converter Ultra-High Voltage DC) transmission system and multi-terminal hybrid UHVDC transmission system,for which,based on the background of the project transmitting power from Wudongde power station to Guangdong and Guangxi,a planned valve group entry/exit control method based on hybrid bridge MMC(Modular Multilevel Converter) is proposed,and the existing planned valve group entry/exit control method for LCC-HVDC is improved. The hardware closed-loop test is performed in RTDS simulation test platform,and results show that the proposed method can smoothly and quickly complete the planned valve group entry/exit in multi-terminal hybrid UHVDC transmission system.
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