| 引用本文: | 秦健飞,裴忠晨,林琳,刘闯,朱帝,王菁月,聂宏展.基于隔离型模块化多电平换流器的中压直流柔性互联配电系统稳定性分析[J].电力自动化设备,2023,43(2): |
| QIN Jianfei,PEI Zhongchen,LIN Lin,LIU Chuang,ZHU Di,WANG Jingyue,NIE Hongzhan.Stability analysis of MVDC flexible interconnected power distribution system based on isolated modular multilevel converter[J].Electric Power Automation Equipment,2023,43(2): |
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| 摘要: |
| 中压直流柔性互联配电系统作为连接高压输电网和低压直流配电网的纽带，可实现源-网-荷-储的灵活接入，适用于未来城市能源互联网。建立了基于隔离型模块化多电平换流器的中压直流柔性互联配电系统小信号等效电路，推导了中压直流端口的阻抗模型，通过对比仿真测量与解析计算结果验证所建模型的准确性，并利用所建精确模型进一步研究电路参数和控制参数变化对系统稳定性的影响。在MATLAB/Simulink仿真平台搭建中压直流柔性互联配电系统的仿真模型，验证了所提小信号阻抗模型的准确性。 |
| 关键词: 中压直流柔性互联配电系统 隔离型模块化多电平换流器 小信号模型 阻抗建模 稳定性分析 |
| DOI：10.16081/j.epae.202208033 |
| 分类号:TM46 |
| 基金项目:国家自然科学基金资助项目(51877035) |
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| Stability analysis of MVDC flexible interconnected power distribution system based on isolated modular multilevel converter |
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QIN Jianfei1, PEI Zhongchen1, LIN Lin2, LIU Chuang1, ZHU Di1, WANG Jingyue1, NIE Hongzhan1
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1.School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China;2.Zhejiang Huayun Clean Energy Co.,Ltd.,Hangzhou 310000, China
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| Abstract: |
| As the link between high voltage transmission network and low voltage DC distribution network, medium voltage direct current(MVDC) flexible interconnected power distribution system can realize the flexible access of source-network-charge-storage, and is more suitable for future urban energy internet. The small signal equivalent circuit of MVDC flexible interconnected power distribution system based on isolated modular multilevel converter is built, the MVDC port impedance model is deduced, and the accuracy of the built model is verified by comparing the simulation measurement results with the analytical calculation results, the influence of circuit parameters and control parameters on the system stability is further analyzed by using the built accurate model. Finally, a simulation model of the MVDC flexible interconnected power distribution system is built on MATLAB/Simulink platform, which verifies the correctness of the proposed small-signal impedance model. |
| Key words: MVDC flexible interconnected power distribution system isolated modular multilevel converter small signal model impedance modeling stability analysis |
