南澳柔性直流输电示范工程换流站启停策略与操作-汕头市科学技术协会.doc

1 1 南澳柔性直流输电示范工程换流站启停策略与操作分析陈涛 1,卢海明(广东电网公司汕头供电局,广东汕头 515041 ) 摘要:柔性直流输电是基于脉宽调制电压源型换流器的新一代直流输电,是实现大型风电场和主网之间稳定联结的最有潜质的电力传输方式。南澳多端柔性直流输电工程是基于模块化多电平换流器拓扑结构的三换流站系统,其采取基于换流站自励充电的站间协调控制的启停策略。本文对换流站的基本控制方式和启动回路分析,探讨了南澳多端柔性直流系统的启停策略和操作步骤,并通过对启停操作的分析获得表征状态变化的电量值。关键词: 柔性直流输电; 模块化多电平换流器;启停策略;启停操作 Start-stop Strategy and Operations Analysis of Nanao Multi-terminal HVDC-Flexible Converter Station CHEN Tao , LU Hai Ming ( Guangdong Shantou 515041 , Shantou Power Supply Bureau ) Abstract : HVDC -Flexible isa new generation of HVDC power transmission based on PWM controlled voltage source converter (VSC) and it is stable links between the large-scale wind farms and the work with the greatest potential power transmission mode . Multi - terminal HVDC flexible engineering in Nanao is the three station system based ona modular multilevel converter topology, the system adopted the coordinated control strategy b etween station s based on self -charging converter. The paper analyzes the basic control mode and starting circuit of the converter station, discusses the start and stop strategy and operation steps of the Nan'ao multi-terminal HVDC flexible system. And through the analysis of start stop operation to obtain the characterization of change of state power value. K eywords : HVDC -Flexible ; modular multi l evel con verter ; start and stop strategy ; start and stop operation 1 引言柔性直流输电( HVDC--F