| 考虑电压降落的虚拟阻抗在下垂控制中的应用 |
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| 引用本文： | 纪礼君,曹炜,黄立勤,杜公言. 考虑电压降落的虚拟阻抗在下垂控制中的应用[J]. 上海电力学院学报, 2015, 31(6): 537-542 |
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| 作者姓名： | 纪礼君 曹炜 黄立勤 杜公言 |
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| 作者单位： | 上海电力学院 |
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| 基金项目： | 国家高技术研究发展计划(863计划)(2011AA05A106). |
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| 摘 要： | 在传统下垂控制的基础上阐述了采用虚拟阻抗对母线电压水平的影响，提出采用电压幅值反馈PI控制对无功功率控制环节进行改进，使得逆变器出口电压先合理抬高再加入虚拟阻抗，从而很好地解决了虚拟阻抗加入后母线电压降落问题，并通过仿真验证了所提出控制策略的有效性。
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| 关 键 词： | 微网 下垂控制 虚拟阻抗 母线电压 |
| 收稿时间： | 2015-03-23 |
Consideration of the Bus Voltage of Virtual Impedance on Droop Control Study |
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| JI Lijun,CAO Wei. Consideration of the Bus Voltage of Virtual Impedance on Droop Control Study[J]. Journal of Shanghai University of Electric Power, 2015, 31(6): 537-542 |
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| Authors: | JI Lijun CAO Wei |
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| Affiliation: | Shanghai University of Electric Power |
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| Abstract: | On the basis of the traditional droop control, the influence on the voltage of connected bus after introducing virtual impedance is elaborated. To solve this problem, the improvement of voltage amplitude feedback PI control strategy is proposed in the Q/V regulation part.Increase the export voltage of inverter firstly and then introduce virtual impedance to cancel out some voltage drop caused by the increase of virtual inductance, thus solved the problem of connected bus voltage drop after introducing virtual impedance. Finally, verified the effectiveness of this strategy brought by Matlab simulation. |
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| Keywords: | micro grid, droop control, virtual impedance, bus voltage |
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