Q. Du, Huijuan Zhang, Peijie Han, Longfei Ma, Qingfu Meng
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Abstract
This paper proposes a novel integrated approach to realize the LVRT (Low Voltage Ride Though)[1]. The paper adopting different protect strategy in view of the different voltage dips, to achieve the unification of the reliability and safety. The paper adopts the improved strategy when the grid voltage dips slightly, and when the voltage dips seriously, the crowbar circuit is applied. Finally, the combined LVRT protection is verified by the MATLAB/SIMULINKE.
本文提出了一种新的集成方法来实现LVRT (Low Voltage Ride through)[1]。针对不同的电压降采取不同的保护策略，实现了可靠性与安全性的统一。本文在电网电压轻微下降时采用改进策略，在电网电压严重下降时采用撬棍电路。最后，通过MATLAB/SIMULINKE对LVRT组合保护进行了验证。
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