摘要
为较好地解决传统数字低通滤波器的延时问题,分析了低通滤波器参数对谐波电流检测响应过程的影响,提出了采用移动窗积分法来改善传统数字低通滤波器的延时问题。通过对这2种数字滤波方法的比较,结果表明移动窗积分法延时短、易实现,并且移动积分窗的长度可根据要求进行修改,以满足谐波检测的要求。
In order to solve the time lagging problem for the low-pass filter （ LPF）, the influence of the LPF＇s parameters on the response time during the detection was analyzed, and the idea of adopting the slipped-window integral to settle the time lagging problem for the conventional digital LPF was proposed. Analysis showed that the proposed method had the advantage of short time lagging and was easy to use, and the window length could be modified according to the requirements of harmonic detection.
出处
《华东电力》
北大核心
2009年第1期108-110,共3页
East China Electric Power
基金
上海市自然科学基金资助项目(05ZR14066)
关键词
数字滤波器
移动窗
谐波检测
digital filter
slipped-window
harmonic detection
