| 引用本文: | 朱琳,赵学深,王一振,郭力,刘海涛,袁宇波,卢浩.中压直流配电系统等效降阶建模及控制参数设计[J].电力自动化设备,2021,41(5): |
| ZHU Lin,ZHAO Xueshen,WANG Yizhen,GUO Li,LIU Haitao,YUAN Yubo,LU Hao.Equivalent reduced-order modeling and control parameter design of medium-voltage DC distribution system[J].Electric Power Automation Equipment,2021,41(5): |
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| 中压直流配电系统等效降阶建模及控制参数设计 |
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朱琳1,2, 赵学深1,2, 王一振1,2, 郭力1,2, 刘海涛3, 袁宇波4, 卢浩1,2
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1.天津大学 智能电网教育部重点实验室，天津 300072;2.天津市智慧能源与信息技术重点实验室，天津 300072;3.中国电力科学研究院有限公司，北京 100192;4.国网江苏省电力有限公司电力科学研究院，江苏 南京 210096
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| 摘要: |
| 合适的等效降阶模型能够为中压直流(MVDC)配电系统的稳定性分析及控制参数设计提供便利。首先，基于所提出的开闭环逐步等效降阶建模方法，建立了MVDC配电系统的等效降阶电路模型，并据此建立了计及换流器间动态交互的开环等效降阶模型。在不增加开环等效降阶模型阶数的前提下，基于泰勒展开的状态反馈控制方法为系统振荡频率及阻尼比的精准设计创造了有利条件。然后，基于所建立的计及换流器间动态交互的闭环等效降阶模型，并结合所提出的MVDC配电系统控制参数设计方法，实现了系统振荡频率及阻尼比的精准设计。最后，硬件在环实验结果验证了理论分析的合理性。 |
| 关键词: 中压直流配电系统 等效降阶模型 状态反馈控制 恒功率负荷 控制参数设计 |
| DOI：10.16081/j.epae.202105041 |
| 分类号:TM712 |
| 基金项目:国家重点研发计划项目(2018YFB0904703)；国家自然科学基金资助项目(51977142) |
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| Equivalent reduced-order modeling and control parameter design of medium-voltage DC distribution system |
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ZHU Lin1,2, ZHAO Xueshen1,2, WANG Yizhen1,2, GUO Li1,2, LIU Haitao3, YUAN Yubo4, LU Hao1,2
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1.Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;2.Key Laboratory of Smart Energy & Information Technology of Tianjin Municipality, Tianjin 300072, China;3.China Electric Power Research Institute, Beijing 100192, China;4.Electric Power Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210096, China
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| Abstract: |
| An appropriate equivalent reduced-order model can provide convenience for the stability analysis and control parameter design of MVDC(Medium-Voltage DC) distribution system. Firstly, based on the proposed open-loop and closed-loop equivalent reduced-order modeling procedure, an equivalent reduced-order circuit model of MVDC distribution system is established, and the open-loop equivalent reduced-order model considering the dynamic interaction between converters is established. Without increasing the order of the reduced-order model, a state feedback control method based on Taylor expansion is introduced, which creates favorable conditions for the accurate design of system oscillation frequency and damping factor. Then, based on the closed-loop equivalent reduced-order model considering the dynamic interaction between converters, combined with the proposed control parameter design method of MVDC distribution system, the system oscillation frequency and damping factor are accurately designed. Finally, the hardware-in-the-loop experimental results verify the rationality of theoretical analysis. |
| Key words: medium-voltage DC distribution system equivalent reduced-order model state feedback control constant power load control parameter design |
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