| 基于数学形态学和网格分形的电能质量扰动检测及定位 |
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| 引用本文： | 李庚银,罗艳,周明,王宇宾. 基于数学形态学和网格分形的电能质量扰动检测及定位[J]. 中国电机工程学报, 2006, 26(3): 25-30 |
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| 作者姓名： | 李庚银 罗艳 周明 王宇宾 |
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| 作者单位： | 1. 电力系统保护与动态安全监控教育部重点实验室(华北电力大学),河北省,保定市,071003
2. 石家庄供电公司,河北省,石家庄市,050051 |
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| 基金项目： | 高等学校博士学科点专项科研基金(20040079002)~~ |
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| 摘 要： | 提出一种基于数学形态学和网格分形的电能质量扰动检测及定位方法。首先利用数学形态学理论构造一种多结构并行复合形态滤波器对扰动波形进行预处理，以滤除信号中的随机、脉冲等多种噪声；然后对滤波后的波形，根据网格的变化规律进行分析，提出一种简单快捷的奇异性检测判据，以准确快速地检测出扰动并进行时间定位。分别用电压骤降、电压骤升、谐波及其组合扰动对所提方法进行验证。数字仿真结果证实了其正确性和有效性。
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| 关 键 词： | 动态电能质量分析 扰动检测 数学形态学 形态滤波器 网格分形 |
| 文章编号： | 0258-8013（2006）03-0025-06 |
| 收稿时间： | 2005-09-25 |
| 修稿时间： | 2005-09-25 |
Power Quality Disturbance Detection and Location Based on Mathematical Morphology and Grille Fractal |
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| LI Geng-yin,LUO Yan,ZHOU Ming,WANG Yu-bin. Power Quality Disturbance Detection and Location Based on Mathematical Morphology and Grille Fractal[J]. Proceedings of the CSEE, 2006, 26(3): 25-30 |
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| Authors: | LI Geng-yin LUO Yan ZHOU Ming WANG Yu-bin |
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| Abstract: | Based on mathematical morphology and grille fractal,a novel approach on power quality(PQ)disturbance detection and location is presented in this paper.At first a parallel-composed morphological filter with multiple structure elements is designed to filter random noise and impulse noise in PQ disturbance signals.Then,to the filtered results,an easy-implementation criterion for detecting singularity based on the grille change regularity is applied to locate the start and end time that the disturbance occurs.The voltage sag,swell,harmonic and their combined disturbances are used to verify the validity of the filter-location approach.Numerical results show that the proposed approach is valid and effective.1 |
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| Keywords: | Dynamic power quality analysis Disturbance detection Mathematical morphology Morphologic filter Grille fractal |
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