| 引用本文: | 郑征,金建新,陶海军,卢迪,李纪伟.交直流混合微电网虚拟APF的研究[J].电力系统保护与控制,2020,48(9):11-17.[点击复制] |
| ZHENG Zheng,JIN Jianxin,TAO Haijun,LU Di,LI Jiwei.Research on virtual APF of AC/DC hybrid microgrid[J].Power System Protection and Control,2020,48(9):11-17[点击复制] |
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| 交直流混合微电网虚拟APF的研究 |
| 郑征,金建新,陶海军,卢迪,李纪伟 |
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| (河南理工大学电气工程与自动化学院，河南 焦作 454003) |
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| 摘要: |
| 针对各种非线性负荷接入混合微电网导致交流母线电能质量恶化、交直流混合微电网电能需要双向流动的问题，提出一种虚拟APF拓扑结构及其控制策略。通过采用瞬时功率理论，设计了恒功率控制系统。依据交直流混合电力系统功率需求，控制虚拟APF灵活工作在有源电力滤波、整流和并网逆变三种工作模式。在实现直流微网与电力系统之间功率双向流动的基础上，对交直流混合微电网系统中谐波进行治理，提高了接口变流器的利用率，降低了系统运行成本。仿真验证了所提虚拟APF拓扑结构及其控制策略的正确性及可行性。 |
| 关键词: 非线性负荷 混合微电网 虚拟APF 电能质量 电能双向流动 |
| DOI：10.19783/j.cnki.pspc.190735 |
| 投稿时间：2019-06-26修订日期：2019-08-27 |
| 基金项目:国家自然科学基金项目资助(U1804143);2018年度河南省高等学校重点科研项目资助(18A410001) |
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| Research on virtual APF of AC/DC hybrid microgrid |
| ZHENG Zheng,JIN Jianxin,TAO Haijun,LU Di,LI Jiwei |
| (School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, China) |
| Abstract: |
| The power quality of an AC bus deteriorates because of various non-linear loads entering the hybrid micro-grid, at the same time as the bidirectional flow of electric energy is required in the AC and DC bus. In this paper, a virtual APF topology and its control strategy are proposed. A constant power control system is designed using instantaneous power theory. According to the power requirements of the AC / DC hybrid power system, the virtual APF is controlled to work flexibly in three working modes i.e. active power filtering, rectifier and grid-connected inverter. Looking at realizing the bidirectional flow of between DC micro-grid and power system, the harmonics in the AC / DC hybrid micro-grid system are treated. This improves the utilization rate of the interface converter and reduces the operating cost of the system. The correctness and feasibility of the proposed virtual APF topology and its control strategy are verified by simulation. This work is supported by National Natural Science Foundation of China (No. U1804143) and 2018 Key Science and Research Project of Henan Colleges and Universities (No. 18A410001). |
| Key words: nonlinear load hybrid micro-grid virtual APF power quality bidirectional flow of electric energy |
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