考虑电压降落的虚拟阻抗在下垂控制中的应用

纪礼君; 曹炜; 黄立勤; 杜公言

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DOI:10.3969/j.issn.1006-4729.2015.06.008

Journal of ShangHai University of Electric Power :2015,31(6):537-542

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考虑电压降落的虚拟阻抗在下垂控制中的应用

纪礼君¹, 曹炜¹, 黄立勤², 杜公言¹

(1.上海电力学院;2.上海恒能企业发展集团公司)

Consideration of the Bus Voltage of Virtual Impedance on Droop Control Study

JI Lijun¹, CAO Wei¹

(1.Shanghai University of Electric Power, Shanghai 200090, China;2.Shanghai HengNeng Enterprise Development Corporation, Shanghai 200122, China)

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Received:March 23, 2015

中文摘要: 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,提出了采用电压幅值反馈PI控制对无功功率控制环节进行改进的方法,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的降落问题,并通过仿真验证了所提出控制策略的有效性.

中文关键词: 微网下垂控制虚拟阻抗母线电压

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. Increasing the export voltage of inverter firstly and then introducing virtual impedance to cancel some voltage drop caused by the increase of virtual inductance can thus solve the problem of connected bus voltage drop after introducing virtual impedance. Finally, verification of the effectiveness of this strategy is brought out by Matlab simulation.

keywords: micro grid droop control virtual impedance bus voltage

文章编号：20150608 中图分类号： 文献标志码：

基金项目:国家高技术研究发展计划(863计划)(2011AA05A106).

Reference text:

Author Name	Affiliation	E-mail
JI Lijun	Shanghai University of Electric Power, Shanghai 200090, China	jilijun_james@126.com
CAO Wei	Shanghai University of Electric Power, Shanghai 200090, China
黄立勤	Shanghai HengNeng Enterprise Development Corporation, Shanghai 200122, China
杜公言	Shanghai University of Electric Power, Shanghai 200090, China