| 引用本文: | 李俊杰,吕振宇,吴在军,刘海军,杨士慧.基于电力电子变压器的交直流混合微电网运行模式自适应切换策略[J].电力自动化设备,2020,40(0): |
| LI Junjie,Lü Zhenyu,WU Zaijun,LIU Haijun,YANG Shihui.Adaptive switching strategy of AC/DC hybrid microgrid operating mode based on power electronic transformer[J].Electric Power Automation Equipment,2020,40(0): |
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| 摘要: |
| 针对交直流混合微电网发生故障时运行模式切换不及时的实际问题，提出了一种基于电力电子变压器的交直流混合微电网运行模式自适应切换策略。以北京崇礼低碳冬奥智能电网综合示范工程为背景，详细介绍了双端供电的交直流混合微电网系统设计方案和各类变流器的控制方法，在此基础上重点设计了6种典型运行模式，利用三元式阐述了各运行模式的稳态判据，并提出了一种基于弱通信的运行模式自适应切换策略。仿真结果表明，所提运行模式自适应切换策略可自行按照预设的切换逻辑在故障条件下及时切换到合适的运行模式，保证了微电网的供电可靠性。 |
| 关键词: 交直流混合微电网 电力电子变压器 自适应控制 模式切换 |
| DOI：10.16081/j.epae.202009010 |
| 分类号:TM42 |
| 基金项目:国家重点研发计划资助项目(2016YFB0900500) |
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| Adaptive switching strategy of AC/DC hybrid microgrid operating mode based on power electronic transformer |
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LI Junjie1, Lü Zhenyu1, WU Zaijun1, LIU Haijun2, YANG Shihui2
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1.School of Electrical Engineering, Southeast University, Nanjing 210096, China;2.State Grid Global Energy Interconnection Researching Institute Co.,Ltd.,Beijing 102209, China
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| Abstract: |
| According to the real situation that the operation mode switching of AC/DC hybrid microgrid is not timely when fault occurs, an adaptive switching strategy of AC/DC hybrid microgrid operating mode based on power electronic transformers is proposed. Taking the Beijing Chongli Low-carbon Winter Olympics Smart Grid Demonstration Project as the background, the design scheme of AC/DC hybrid microgrid system with dual-end power supply and the control methods of various converters are introduced in detail. On this basis, six typical operation modes are designed, and the steady-state criteria of each operation mode is proposed using the ternary form method, and an adaptive switching strategy of operating mode based on limited communication is proposed. The simulative results show that the proposed adaptive switching strategy of operating mode can automatically switch the proper operation mode under fault conditions according to the preset switching logic, ensuring the reliability of the power supply. |
| Key words: AC/DC hybrid microgrid power electronic transformer adaptive control mode switching |
