杨志强, 黄如海, 马秀达, et al. 基于控制模式切换的构网柔直限流方法[J]. 2025, 41(12): 12-22.
DOI:
杨志强, 黄如海, 马秀达, et al. 基于控制模式切换的构网柔直限流方法[J]. 2025, 41(12): 12-22.DOI:
基于控制模式切换的构网柔直限流方法
摘要
柔性直流输电已成为远距离、大容量新能源送出的友好解决方案。将构网控制技术应用于柔直换流器,可使其在适应弱电网接入的同时为电网提供有功与无功支撑。针对构网型柔直换流器在电网电压跌落工况下存在的过流风险,提出一种基于控制模式实时动态切换的故障限流方法。首先,设计了海上风电柔直送出系统受端换流器的构网控制策略;通过分析构网控制与跟网控制切换过程的动态特性,揭示两种控制模式切换扰动的产生机理,明确降低扰动需解决的关键问题,并提出相应的扰动抑制方法。最后,基于实时数字仿真器(Real-time digital simulation
Taoufik Qoria,François Gruson,Fréderic Colas,Xavier Kestelyn,Xavier Guillaud.Current limiting algorithms and transient stability analysis of grid-forming VSCs[J].Electric Power Systems Research,2020.
Taul Mads Graungaard,Wang Xiongfei,Davari Pooya,Blaabjerg Frede.Current Limiting Control with Enhanced Dynamics of Grid-Forming Converters during Fault Conditions[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2019.
Lennart Harnefors,Marko Hinkkanen,Usama Riaz,F. M. Mahafugur Rahman,Lidong Zhang.Robust Analytic Design of Power-Synchronization Control.[J].IEEE Trans. Industrial Electronics,2019.
Du Wei,Chen Zhe,Schneider Kevin P.,Lasseter Robert H.,Pushpak Sai,Tuffner Francis K.,Kundu Soumya.A Comparative Study of Two Widely Used Grid-Forming Droop Controls on Microgrid Small Signal Stability[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2019.
Lu Xiaonan,Wang Jianhui,Guerrero Josep M.,Zhao Dongbo.Virtual-Impedance-Based Fault Current Limiters for Inverter Dominated AC Microgrids[J].IEEE Transactions on Smart Grid,2018.
Shuai Zhikang,Huang Wen,Shen Chao,Ge Jun,Shen Z. John.Characteristics and Restraining Method of Fast Transient Inrush Fault Currents in Synchronverters[J].IEEE Transactions on Industrial Electronics,2017.