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首页> 外文期刊>Power Electronics, IET >Fast voltage detection method for grid-tied renewable energy generation systems under distorted grid voltage conditions
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Fast voltage detection method for grid-tied renewable energy generation systems under distorted grid voltage conditions

机译：电网电压畸变情况下并网可再生能源发电系统的快速电压检测方法

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摘要

A fast voltage detection method to assist with the low-voltage ride-through operation of grid-tied renewable energy generation systems is proposed in this study. It is designed to detect every phase voltage, so that it can be applied in both three-phase and single-phase applications. The whole voltage detection approach consists of two stages, the pre-filtering stage and the voltage detection stage. In the pre-filtering stage, a cascaded delayed signal cancellation (CDSC) module and a low-pass filter are connected in series to filter low-order harmonics and high-frequency noises. For eliminating the low-order harmonics of interest, different types of CDSC methods are studied in detail. Subsequently, a new orthogonal signal generator is built to calculate the voltage amplitude in the voltage detection stage. Finally, the proposed voltage detection method is verified by experimental results.
机译：这项研究提出了一种快速电压检测方法，以辅助并网可再生能源发电系统的低压穿越。它旨在检测每相电压，因此可以同时应用于三相和单相应用。整个电压检测方法包括两个阶段，即预滤波阶段和电压检测阶段。在预滤波阶段，级联的延迟信号消除（CDSC）模块和低通滤波器串联连接，以滤除低阶谐波和高频噪声。为了消除感兴趣的低阶谐波，详细研究了不同类型的CDSC方法。随后，建立一个新的正交信号发生器以计算电压检测级中的电压幅度。最后，通过实验结果验证了所提出的电压检测方法。

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