IEC闪变检测算法的Matlab数字化实现及校正研究  

Digital Realization and Check Research of IEC Flicker Measurement in Matlab

作　　者：杨鸯[1,2] 陈力[2] 侯勇[2] 万涛[2] 王宝华[1] 

机构地区：[1]南京理工大学,南京210094 [2]西门子电力自动化有限公司,南京211100

出　　处：《电测与仪表》2014年第12期114-119,共6页Electrical Measurement & Instrumentation

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.

关 键 词：闪变 平方检测法 数字化 曲线拟合 误差校正 

分 类 号：TM932[电气工程—电力电子与电力传动]