基于非线性理论的的电力谐波检测与估计  

The detection and estimation of electric power harmonics based on nonlinear theory

作　　者：王慧武 刘巍 丛超 

机构地区：[1]哈尔滨电工仪表研究所,哈尔滨150028 [2]国网辽宁省电力公司鞍山供电公司,辽宁鞍山114000

出　　处：《电测与仪表》2016年第3期68-74,共7页Electrical Measurement & Instrumentation

摘　　要：为了解决现有电力系统谐波检测方法普遍存在的对频率相近的谐波和间谐波分辨力不足和抗噪声干扰能力弱的问题,首次引入间歇混沌振子列方法解决以上两个问题,并介绍了两种应用间歇混沌振子列进行频率估计的方法。此外,还提出了一种基于Holmes-Duffing方程的Floquet指数的对待测信号的幅值和相位简化估计方法。最后用一组仿真信号的检测结果,验证了间歇混沌振子列方法检测电力系统谐波间谐波的有效性和提出的信号参数估计方法的准确性。This paper uses the intermittent chaotic oscillator to solve the problems of frequency resolution and be interfered by noise easily for the first time,and introduce two means for estimating frequency. Besides this paper puts forward a simplified method for estimating the amplitude and phase of the signal to be measured used by features index.Finally verifying the availability and accuracy of the detection and estimation method proposed in this paper.

关 键 词：谐波检测 频率分辨力 抗噪声干扰 混沌振子 特征指数 

分 类 号：TM93[电气工程—电力电子与电力传动]