摘要
鲁西背靠背直流输电工程是世界上首个采用大容量柔直与常规直流组合模式的背靠背直流工程,其控制保护技术优化研究有着重要意义。本文建立了该工程的仿真模型,通过选择几类典型的现场试验实测数据与模型仿真结果进行比对,验证了模型准确性。针对模块化多电平换流器(MMC)桥臂单元相间内部环流抑制、向无源网络供电问题,结合当前柔性直流输电领域的前沿控制技术设计了结构优化的控制器,通过在准确模型上进行仿真测试,验证了算法的正确性及控制器的稳定性,本文所提控制保护优化方法可为实际工程提供参考和指导。
Luxi back-to-back HVDC transmission project is the first back-to-back HVDC project which adopts the combination mode of large-capacity MMC-HVDC and LCC-HVDC in the world.Its control and protection technology optimization research has important significance.In this paper,a simulation model of the project is established,and the accuracy of the model is verified by selecting several types of typical field test actual measurement data and comparing with the model simulation results.For the problem of suppressing the internal loop current between the phases of the bridge arm unit of the modular multilevel converter(MMC)and supplying power to the passive network,a controller model with optimized structure is designed by combining the current cuttingedge control technology in the field of VSC-HVDC transmission;and simulation tests are conducted on the built model to verify the correctness of the algorithm and the stability of the controller.The control protection optimization method proposed in this paper can provide reference and guidance for practical engineering.
作者
郭海平
郭映维
李邦源
卢远宏
鲁聪
Guo Haiping;Guo Yingwei;Li Bangiyuan;Lu Yuanhong;Lu Cong(State Key Laboratory of HVDC,Electric Power Research Institute,CSG,Guangzhou 510663,China;Yunnan Electric Test and Research Institute(Group)Co.,Ltd,Kunming 650217,China;Yunnan Power Grid Co.,Ltd.,Yuxi Power Supply Bureau,Yuxi 653100,China)
出处
《云南电力技术》
2025年第6期87-95,共9页
Yunnan Electric Power
关键词
柔性直流
背靠背
环流抑制
无源网络供电
VSC-HVDC
Back-to-back
Loop current suppressing
Supplying power to the passive network
