摘要
提出了一种基于工控机的电能质量监测系统的测量方法。利用快速傅立叶变换对数据采集卡同步采样得到的信号进行处理,从而对电能质量参量进行分析、显示。实验结果表明,本系统能够长期进行监测和分析,谐波分析次数到100次,相位分析误差小,且可同时监测多个网点。本系统能够快速、准确地反映出电力系统中电能质量参量的变化情况,能够很好地适应电力系统对电能质量监测的要求。
Based on the industrial computer, a new monitoring method of power quality is proposed. The system processes the synchronous sampled signals by using fast Fourier transform. So the system can analyze and display the power quality parameters. The results of the experiment show that the system can monitor and analyze the power quality parameters in power systems with long time, and harmonic numbers can be analyzed to 100 times and phase error is very small, and can monitor a number of points at the same time. The system can reflect the changes of each power quality quickly and accurately, so the system can well adapted to the power quality monitoring requirements.
出处
《电测与仪表》
北大核心
2008年第10期15-18,共4页
Electrical Measurement & Instrumentation
关键词
高次谐波
在线监测
数据采集
电能质量
high harmonic, on-line monitor, data acquisition, power quality
