基于波动负荷功率分析的闪变源判别方法  

Trace of Flicker Sources Based on Fluctuating Load Power Analysis

作　　者：高云鹏[1] 陈婧[1] 李林[1] 滕召胜[1] 柯盼盼 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2016年第8期92-100,共9页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51107035);湖南省自然科学基金资助项目(2016JJ2022);长沙市科技计划项目(K1508018-11)~~

摘　　要：通过建立多闪变源电路等效模型,分析了闪变功率闪变源判别原理,构建了改进能量算子提取电压和电流闪变包络,采用改进FFT谱分析获得闪变包络参数计算闪变功率,基于闪变功率方向和幅值特性实现闪变源定位及其污染评估,提出并建立了基于波动负荷功率分析的闪变源判别方法.仿真分析和实验表明,提出方法能快速有效定位闪变源,准确评估多闪变源的污染程度,判别结果快速准确、误判率低.Through the establishment of multi-flicker sources circuit equivalent model, the theoretical background of tracing flicker sources by flicker power was analyzed. To accurately estimate flicker power, the flicker envelope parameters were obtained by using improved Teager-Kaiser energy operator and the improved FFT. The direction of flicker flow was determined by the sign of flicker power, and pollution as- sessment was achieved with the magnitude of flicker power. The simulation analysis and experiment results show that this approach can trace flicker sources effectively and rapidly and assess the pollution level of different flicker sources accurately. The tracing results are computed fast and correctly and the misdiagnosis rate is reduced.

关 键 词：闪变源 闪变功率 改进能量算子 改进FFT 电能质量 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]