谐波阻抗估计的非光滑部分线性回归方法  

Unsmooth and partially linear regression model for harmonic impedance estimation

作　　者：华回春[1] 刘哲[1] 贾秀芳[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003

出　　处：《电力自动化设备》2016年第9期120-126,共7页Electric Power Automation Equipment

基　　金：中央高校基本科研业务费专项资金资助项目(2014-MS164)~~

摘　　要：系统谐波阻抗的估计是电能质量研究领域的难点。波动量法作为工程上计算系统谐波阻抗的成熟方法,在背景谐波波动占主导的情况下是失效的。为了弥补波动量法的缺陷,提出了系统谐波阻抗计算的非光滑复数域部分线性回归模型,设计了细分迭代算法,实现了模型的求解。所提方法不仅能够在背景谐波波动占主导的情况下计算系统谐波阻抗,也能够在背景谐波波动不占主导的情况下实现系统谐波阻抗的准确计算。仿真算例和实际测试数据验证了所提方法的有效性。It is difficult to estimate the harmonic impedance in the domain of power quality research. As a mature method for calculating the harmonic impedance in the engineering applications,the fluctuation method becomes ineffective when the background harmonic fluctuation is dominant. In order to get rid of its defect,an unsmooth and partially linear regression model is proposed and an iterative subdivision method is derived to solve the model,which calculates the harmonic impedance accurately no matter whether the background harmonic fluctuation is dominant or not. Case simulation and actual test data verify the effectiveness of the proposed method.

关 键 词：电能质量 谐波阻抗 部分线性回归模型 背景谐波电压 谐波分析 

分 类 号：TM744[电气工程—电力系统及自动化]