| 抑制多台分布式发电单元自治微网环流的主从控制策略 |
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| 引用本文： | 崔明勇,艾欣,雷之力. 抑制多台分布式发电单元自治微网环流的主从控制策略[J]. 电网技术, 2011, 0(4): 143-148 |
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| 作者姓名： | 崔明勇 艾欣 雷之力 |
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| 作者单位： | 华北电力大学电气与电子工程学院; |
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| 摘 要： | 为提高自治微网系统的容量和可靠性,多台分布式发电(distributed generation,DG)单元多并联运行。各DG输出电压幅值、频率、相位等微小的差异会在各DG间产生较大的环流,使其中的逆变器性能变差或损坏,因此必须对环流加以控制。分析了自治微网中多台DG并联运行时环流产生的原理,提出了用以抑制环流的等电压、等电流、等功率以及混合式4种主从控制策略。根据各DG采用的LCL接口电路,给出了相应的嵌套式逆变器控制结构。以含3台并联运行DG的自治微网为算例,用Matlab/Simulink进行仿真,分析了不同负载情况下的环流抑制效果,验证了上述策略的正确性和可行性。
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| 关 键 词： | 自治微网 分布式发电 逆变器 环流 主从控制 |
Master-Slave Control Strategy to Restrain Circulating Current in Autonomous Microgrid With Multi Distributed Generation Units |
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| CUI Mingyong,AI Xin,LEI Zhili. Master-Slave Control Strategy to Restrain Circulating Current in Autonomous Microgrid With Multi Distributed Generation Units[J]. Power System Technology, 2011, 0(4): 143-148 |
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| Authors: | CUI Mingyong AI Xin LEI Zhili |
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| Affiliation: | CUI Mingyong,AI Xin,LEI Zhili(School of Electrical and Electronic Engineering,North China Electric Power University,Changping District,Beijing 102206,China) |
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| Abstract: | To enhance the capacity of autonomous microgrid and improve its reliability,multi distributed generation(DG) units are always operating in parallel.The differences of voltage amplitudes,frequencies and phases among DG units will produce biggish circulating currents among DG units,it makes performance of inverters in DG system deteriorated or the inverters damaged,the circulating currents have to be restrained.The principle causing circulating currents in DG system is analyzed while multi DG units are parall... |
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| Keywords: | autonomous microgrid distributed generation(DG) inverter circulating current master-slave control |
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