Asymmetrical fault ride-through of three-phase PV systems using four-wire Dc-ac converters
Asymmetrical fault ride-through of three-phase PV systems using four-wire Dc-ac converters
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DOI：
10.1109/ipec.2014.6869996
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
S. Iyer;Bin Wu;Y. Li;B. Singh
中科院分区：
文献类型：
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作者：
S. Iyer;Bin Wu;Y. Li;B. Singh
本文研究了符合德国输电法规的三相光伏系统的故障穿越策略。具体地说，本文研究了主要发生在配电系统中的单线接地故障的情况。文中提出了按相向故障相注入无功功率，同时保持向健康相注入有功功率，从而避免了发电亏损。在MatLab/Simulink中利用SimPowerSystem工具箱进行的仿真研究结果显示了不平衡故障过程中电流的不平衡特性。已经展示并描述了用于实现该策略的实验装置。给出了实验结果，验证了仿真结果。
This paper examines the fault ride-through strategy of a three-phase PV system with respect to compliance to the German Transmission Code. Specifically, the paper examines the case of a single line-ground fault which occurs predominantly in the distribution system. The paper proposes the injection of reactive power on a per-phase basis to the faulty phases while maintaining active power injection to the healthy phases thereby avoiding power generation deficit. Simulation results from a study performed in MATLAB/Simulink with the SimPowerSystem toolbox present the unbalanced nature of currents during an unbalanced fault. An experimental setup has been shown and described that has been used to implement the strategy. Experimental results have been provided to validate the simulation results.