电测与仪表2017，Vol.54Issue(8)：1-8,8.
基于小信号模型的柔性直流输电网络运行稳定性研究
Research on the stability of VSC-HVDC network based on small signal model
摘要
Abstract
Small signal stability is the ability to maintain stable operation of dynamic systems under small disturbance.VSC-HVDC network is the key to the interconnection of AC system, new energy and passive network.The small signal stability of VSC-HVDC network is directly related to the stable operation of the regional power system.This paper firstly deduces the small signal mathematical models of voltage source converter, convertor controlling system and DC transmission network, and verifies the correctness of the small signal model by the simulation comparison;and then, it lists the state matrix of VSC-HVDC based on state-space method, and deduces the stability criterion of small signal through Lyapunov stability criterion and Participation factor matrix analysis method.Finally, the applicability and accuracy of the small signal stability method are demonstrated by case analysis, and optimization principle of the PI parameter is also summarized, which provides the research foundation of controller design and decoupling mechanism for VSC-HVDC engineering application.关键词
柔性直流输电/稳定性/小信号模型/仿真对比/特征值/参与因子Key words
VSC-HVDC/stability/small signal model/simulation comparison/characteristic value/participation factor分类
信息技术与安全科学引用本文复制引用
饶雪,刘开培,杨洁,秦亮..基于小信号模型的柔性直流输电网络运行稳定性研究[J].电测与仪表,2017,54(8):1-8,8.基金项目
国家高技术研究发展计划(863计划)资助项目(2015AA050101) （863计划）
