电力系统保护与控制2017，Vol.45Issue(22)：125-131,7.DOI:10.7667/PSPC161882
基于高阶系统模型的VSC-MTDC下垂控制策略研究
Droop control strategy research of VSC-MTDC based on high-order system model
摘要
Abstract
Voltage Source Converter based Multi-terminal Distribution (VSC-MTDC) is based on flexible-HVDC and multi-stations coordinated control strategy. First,P-Udc/Uac-Q droop strategy and control system architecture are designed. Then, based on LCL high-order primary system model, control system architecture of inner current loop, outer DC-voltage loop and droop loop is proposed, and a design method of optimized control parameter is made. Finally, simulation model of 4-terminal 10 kV VSC-MTDC is built and control parameters are selected. Starting control, steady-state control and critical step response are analyzed. Simulation results show that adopting the proposed control strategy, each converter could achieve droop control of active power flow upon maintaining stability of DC bus voltage. Security and stability of VSC-MTDC is improved and response characteristics are good upon multi transient conditions.关键词
VSC-MTDC/P-Udc下垂/高阶系统模型/优化控制参数/暂态工况Key words
VSC-MTDC/P-Udc droop/high-order system model/optimized control parameter/transient conditions引用本文复制引用
洪莎莎,武迪,吕宏水,朱金大,俞拙非..基于高阶系统模型的VSC-MTDC下垂控制策略研究[J].电力系统保护与控制,2017,45(22):125-131,7.基金项目
国家重大科技专项(2016YFB0901805) （2016YFB0901805）
国家电网公司科技项目(524606150161) （524606150161）
南京南瑞集团公司科技项目(524606150143) This work is supported by National Science and Technology Major Project (No. 2016YFB0901805) and Science and Technology Project of State Grid Corporation of China (No. 524606150161). （524606150143）
