摘要
对IEC闪变平方检测原理进行了详细介绍，阐述了闪变检测的数字化及自校验方法；同时将Simulink仿真及M文件编程相结合，针对标准中所提供的电压波动调制数据，对短时闪变值只。采用不同统计方法进行仿真计算及误差比较。进而给出一种计算校正增益K的简便方法，并在0．00833～33．33Hz频率范围内对其进行分段拟合校正，提高了闪变检测精度。
This paper introduced the IEC square demodulation theory to measure flicker in detail and discussed thedigitization and self-check method of the flicker measurement. Considering the modulation data of the voltagefluctuation provided in the flicker standard, two different statistical methods were used to do simulation calculationon the short-term flicker severity Pst and make error comparison by combining Simulink simulation with M fileprogramming. Then a short cut method was presented to calculate Gain K so that the measuring error could berevised from 0.00833 to 33.33Hz by using the curve-fitting method and thereby the measuring accuracy of theflicker could be improved.
出处
《电测与仪表》
北大核心
2014年第12期114-119,共6页
Electrical Measurement & Instrumentation
关键词
闪变
平方检测法
数字化
曲线拟合
误差校正
flicker, square demodulation method, digitization, curve-fitting, error check
