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基于HHT的同步电机参数辨识
引用本文:李天云,高磊,陈晓东,王鸿懿.基于HHT的同步电机参数辨识[J].中国电机工程学报,2006,26(8):153-158.
作者姓名:李天云  高磊  陈晓东  王鸿懿
作者单位:1. 东北电力大学电气工程学院,吉林省,吉林市,132012
2. 广东省电力调度中心,广东省,广州市,512000
3. 哈尔滨商业大学轻工学院,黑龙江省,哈尔滨市,150028
摘    要:将一种新的非平稳信号的处理方法—Hilbert-Huang变换(HHT)应用于同步电机的参数辨识中。提出了基于HHT方法的短路电流处理新方法,该方法以经验模态分解(empiricalmodedecomposition,EMD)为基础,构成一种新型的时空滤波方法,从强噪声背景下的短路电流数据中有效地提取出了基波分量和直流分量。克服了传统处理方法精度低的缺点,并且不存在小波基选取问题,具有处理精度高、自适应性强的特点。还提出了基于稳健回归算法的直流分量辨识算法,以及基于Hilbert变换和非线性变量优化(NLO)的基波分量辨识算法,实现了同步电机瞬态和超瞬态参数的精确辨识。用加入滤波环节的F-EMD,降低了电流分量分离过程中的计算量。仿真分析和试验数据分析验证了该方法的有效性。

关 键 词:参数辨识  同步电机  希尔伯特-黄变换  时空滤波  稳健回归  非线性优化
文章编号:0258-8013(2006)08-0153-06
收稿时间:2005-12-27
修稿时间:2005年12月27

Parameter Identification of Synchronous Machine Based on Hilbert-Huang Transform
LI Tian-yun,GAO Lei,CHEN Xiao-dong,WANG Hong-yi.Parameter Identification of Synchronous Machine Based on Hilbert-Huang Transform[J].Proceedings of the CSEE,2006,26(8):153-158.
Authors:LI Tian-yun  GAO Lei  CHEN Xiao-dong  WANG Hong-yi
Abstract:Introduces a novel technique-HHT to the electromagnetic parameter identification of synchronous machine. First of all, a new analysis method based on HHT is proposed to deal with short-circuit current data. It devises a time-space filtering using EMD and extracts the DC and fundamental component from the transient short-circuit current. This way overcomes the low-accuracy shortcoming of traditional method as well as the difficulty in choosing Wavelet, so it has high accuracy and strong self-adaptability. In addition, this article presents a technique using robust regression algorithm to analysis the DC current component, as well as a new algorithm based on Hilbert and NLO for the analysis of fundamental current component , consequently, realizes accurate identification of transient and subtransient parameters. Besides, to decrease the computation during the current component isolating, an alternative approach based on low-pass filtering and EMD is stated. The simulation and experimental results demonstrate the effectiveness of the proposed technique.
Keywords:parameter identification  synchronous machine  hilbert-huang transform  time-space filtering  robust regression algorithm  non-linear optimization
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