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标题：基于Hilbert变换的电压暂降补偿算法研究 |
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作者：王琼，姚艳芳，龚晓伟，等 |
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| 2018年第5期 访问次数：222次 |
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摘要：本文基于Hilbert变换，利用其移相特性，改进了动态电压恢复器的补偿控制算法，研究其在电压暂降检测及补偿方面的实用性。通过仿真分析，结果表明，对于负载侧发生的对称和不对称电压暂降故障，该算法既能快速准确的检测电压暂降发生的起止时间，又能有效的对系统电压暂降故障起到很好的补偿效果，具有响应速度快、动态特性好的优点。
关键词：电压暂降；Hilbert变换；DVR；不对称故障
Abstract: This article based on Hilbert transform, the compensation control algorithm of dynamic voltage restorer was improved by using its phase shift characteristic, and its practicability in voltage sag detection and compensation was studied. The simulation results show when the load side appears the symmetry and symmetry asymmetric voltage sag fault, the algorithm can quickly and accurately detect the occurrence time of the voltage sag, but also can effectively compensate the system voltage sag fault, with quick response speed and good dynamic characteristics advantage.
Key words: voltage sag; Hilbert transform; DVR;asymmetric fault
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