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基于广义S变换的电压闪变检测法

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针对电压闪变信号提取不准确的问题,提出一种基于广义S变换的电压闪变检测法.通过引入α变量改变 S变换窗函数的窗宽,局部调整S变换频域和时域测量精度,从而实现电压闪变精确检测.实验结果表明,与传统 S变换方法相比,该方法准确率高,能更有效检测出电压闪变成分.
Generalized S-Transform-based Voltage Flicker Detection
In view of the inadequate accuracy in the extraction of voltage flicker signals,this work tentatively proposed a generalized S-transform-based voltage flicker detection method.The method was designed to introduceαvariables to change the width of S-transform window function,and to locally adjust frequency and time resolution of S-transform,hence reali-zing accurate detection of voltage flicker.The proposed method was indicated by experiment to be superior in accuracy compared with the conventional S-transform method and competitive in effectively detecting voltage flicker.

voltage flickergeneralized S-transformwindow functionvoltage flicker detection

吴启宇、张安婷、俞明

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国网江苏省电力有限公司南京市溧水区供电分公司,江苏 南京 211200

南京三新供电服务有限公司溧水公司,江苏 南京 211299

电压闪变 广义S变换 窗函数 闪变检测

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(21)