电压闪变分析软件设计与实现  

Design and Implementation of the Analysis Software for Voltage Flicker

作　　者：董衍旭[1] 周军[2] 李竞攀[1] 尚秋峰[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]四川省电力公司自贡电业局,四川自贡643000

出　　处：《自动化仪表》2011年第11期32-34,38,共4页Process Automation Instrumentation

基　　金：河北省教育厅科技基金资助项目(编号:z2010292)

摘　　要：电压波动和闪变是衡量电能质量优劣的重要指标,电压闪变信号的检测现已成为国内外研究的热点。为了更方便、准确地测量电压闪变信号,在LabWindows/CVI环境下设计并实现了一种电压闪变小波分析软件。该设计通过调用动态链接库的方法,实现了LabWindows/CVI与Matlab的混合编程,既提升了虚拟仪器软件的开发效率,又提高了可扩展性;采用开源数据库SQLite3存储数据,进一步降低了系统的内存开销与经济开支。试验结果表明,闪变测量模块的测量精度满足IEC的精度要求。Voltage fluctuation and flicker are important indexes for judging the superior or inferior quality of the power energy;the detection of voltage flicker signals has become one of the hot researching subjects at home and abroad.In order to measure voltage flicker signals easily and precisely,under LabWindows/CVI environment,the wavelet analysis software for voltage flicker has been designed.In the design,the hybrid programming between LabWindows/CVI and Matlab is implemented through calling dynamic linkage library.This method enhances the developing efficiency of virtual instrument software,and provides expandable capability.By adopting the open source code database SQLite3 to store data,the memory overhand and economical expenses are reduced in further.The experimental results indicate that the measurement accuracy of flicker measuring module satisfies the requirement of IEC.

关 键 词：电压闪变 小波变换 LABWINDOWS/CVI MATLAB 动态链接库 混合编程 

分 类 号：TM933.2[电气工程—电力电子与电力传动]