低压电器实验下电力系统电压波动与闪变检测
Voltage Fluctuation and Flicker Detection in Power System Under Low-voltage Electrical Equipment Testing
杨吉林1
作者信息
- 1. 福建省产品质量检验研究院,福建 福州 350000
- 折叠
摘要
在常规的电力系统电压波动与闪变检测中,运用频率搜索的方法,融合不同频率下的闪变差异性,来检测电压波动与闪变,导致检测误差较大,因此提出低压电器实验下电力系统电压波动与闪变检测研究.首先通过平方解调法采集电压信号,并对波动与闪变信号进行处理;然后提取电压波动与闪变特征量,分析电压波动与闪变的参数来构建检测模型,以单一频信号和多频信号为基础,分别构建针对检测模型;最后对整体流程进行规划,完成检测研究.实验中,实验组的闪变检测误差为 23.15%,对照组的闪变检测误差为 46.78%.该实验结果证明所设计的检测方法具有较低的误差值,能够运用到实际的检测过程中.
Abstract
In conventional power system voltage fluctuation and flicker detection,frequency search method is used to integrate the flicker differences at different frequencies to detect voltage fluctuation and flicker,resulting in significant detection deviations.Therefore,a study on power system voltage fluctuation and flicker detection under low-voltage electrical equipment testing was proposed.First the voltage signal was collected using the square demodulation method,and fluctuation and flicker signals were processed.Then the characteristic quantities of voltage fluctuation and flicker were extracted,and the parameters of voltage fluctuation and flicker were analyzed to construct a detection model.Based on single-frequency signals and multi-frequency signals,specific detection models were constructed separately.Finally the overall process is planned and the detection study was carried out.The proposed method achieved a flicker detection deviation of 23.15%in the experiment in which the control group had a flicker detection deviation of 46.78%,and thereby was proved more accurate and practically applicable.
关键词
低压电器电力系统/电压波动/电压闪变/电压检测Key words
low-voltage electrical appliance and power system/voltage fluctuation/voltage flicker/voltage detection引用本文复制引用
出版年
2024
NETL
NSTL
万方数据