摘要
介绍动态系统的Lyapunov线性化方法,并依此作为理论依据对柔性互联变电站(FIPS)中双端背靠背模块化多电平换流器(MMC)和控制系统进行建模;考虑到变电站作为交、直流系统连接的关键节点,将模型拓展至交、直流系统,再将各部分模型整合到一起构成基于背靠背MMC的FIPS系统小信号模型,即整体模型包括MMC、控制系统、交流系统和直流系统四个部分。通过MATLAB实现所得全局系统的小信号模型,并在不同工况下与PSCAD/EMTDC暂态模型所得波形进行对比,验证了所建小信号模型的准确性。
Lyapunov linearization method of the dynamic systems is introduced,and it is used as the theoretical basis to model for twoend back-to-back Modular Multilevel Converter(MMC)and control system in the Flexible Interconnected Power Substation(FIPS).As the substation is the key node to connect AC and DC system,the paper first extends the model to AC and DC system,and then integrates all parts of models to construct the small signal model of FIPS system based on back-to-back MMC.Therefore,the whole model includes MMC,control system,AC system and DC system.The paper compares the small signal model of the global system obtained from MATLAB with the waveforms obtained from PSCAD/EMTDC transient models under various working conditions,and verifies the accuracy of the small signal model.
作者
班国邦
钟九牧
袁旭峰
辛晓云
马晓红
欧阳泽宇
BAN Guo-bang;ZHONG Jiu-mu;YUAN Xu-feng;XIN Xiao-yun;MA Xiao-hong;OUYANG Ze-yu(Guizhou Electric Power Research Institute,Guiyang 550002,China;Southern Power Grid Company Key Laboratory of Ice Prevention and Mitigation,Guiyang 550002,China;College of Electrical Engineering,Guizhou University,Guiyang 550025,China)
出处
《电工电气》
2023年第4期12-20,25,共10页
Electrotechnics Electric
基金
国家自然科学基金项目(52067004)。
