A hybrid synchronously rotating reference frame-based voltage sag detection under distorted grid voltages

2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) Pub Date : 2014-05-14 DOI:10.1109/ECTICON.2014.6839719

Y. Sillapawicharn

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引用次数: 1

Abstract

A hybrid synchronously rotating reference frame (HSRRF)-based voltage sag detection is proposed in this paper. The proposed method provides the fast and accurate voltage sag detection even in the distorted grid voltage environments. A hybrid algorithm is used to improve the performance by a combination of the instantaneous voltage sag detection part and the synchronously rotating reference frame (SRRF)-based voltage sag detection part. If any instantaneous voltage sag is detected and the voltages from SRRF-based voltage sag detection part decreases to the reference value, then the completed voltage sag condition is recognized. This proposed voltage sag detection provides a shorter detection time in every condition when comparing to the conventional methods. The validation of proposed algorithm is confirmed through the computer simulations which are operated in the distorted grid voltages with various conditions of the voltage sag.

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畸变电网电压下基于混合同步旋转参考系的电压暂降检测

提出了一种基于混合同步旋转参考框架(HSRRF)的电压暂降检测方法。该方法即使在电网电压失真的情况下也能快速准确地检测出电压暂降。将瞬时电压暂降检测部分与基于同步旋转参照系(SRRF)的电压暂降检测部分相结合，采用混合算法提高检测性能。如果检测到瞬时电压骤降，且基于srrf的电压骤降检测部分的电压降至参考值，则识别出完整的电压骤降情况。与传统方法相比，所提出的电压暂降检测在任何情况下都能提供更短的检测时间。通过在电网电压畸变和各种电压暂降条件下的计算机仿真，验证了算法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)

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