基于IEC闪变仪的一种新型短时间闪变值算法  

A Novel Computing Method of Short-term Flicker Severity Based on IEC Flickermeter

作　　者：杨思嘉 曼苏乐[1] 钱波[2] YANG Si-jia;MAN Su-le;QIAN Bo(Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学,上海200240 [2]国网江苏省常州供电公司,江苏常州213000

出　　处：《电力电子技术》2019年第9期44-48,共5页Power Electronics

摘　　要：针对采用国际电工委员会(IEC)闪变测量原理实现的数字化闪变仪在部分频率点处误差较大且增益校正复杂的情况,在此对增益环节的设计进行改进,给出IEC闪变仪的数字化方案,在保证较小误差的前提下降低了增益校正难度,提高在嵌入式系统中应用的便捷性。该数字化闪变仪在Matlab/Simulink环境下进行仿真验证。针对嵌入式系统存储量小,对短时间闪变值实时性要求高的情形,提出一种新型短时闪变值计算方案,可在占用小存储量的前提下快速计算出短时闪变值,并能通过部分更新数据的方案提高短时闪变值的更新速度。最后,将所设计的数字化闪变仪和新型短时闪变值算法移植到嵌入式系统上进行实验验证,效果良好。In the case digital realization of flickermeter based on international electrotechnical commission( IEC) standard bears huge error under certain frequencies and bears difficulty and complexity in gain correction, the design method of gain link of the flickermeter is promoted.Therefore, the digital realization of flickermeter with a new method of gain correction with error controlled under the limit is presented, the practicability in embedded system is promoted. This digital realization has been verified in Matlab/Simulink.In view of the small storage capacity of embedded system and the high real-time requirement for short-time flicker value,a novel method is presened to quickly calculate the short-term flicker severity and promote the refreshing rate of this value by partly updating the IFS values.At last, the improved digital realization method of flickermeter and the novel computing method has been transplanted to embed-ded system to perform an experiment, which proves to have a good effect.

关 键 词：数字化闪变仪 短时闪变值 嵌入式系统 

分 类 号：TM933[电气工程—电力电子与电力传动]