基于复数域偏最小二乘法与等值法的多谐波源责任划分  

Responsibility Distinction for Multiple Harmonic Sources Based on Partial Least Square in Complex Field and Equivalent Method

作　　者：王辉[1] 刘炜[1] 李群湛[1] 易东[1] 郭成[2] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031 [2]云南电网有限责任公司电力科学研究院,云南省昆明市650217

出　　处：《电力系统自动化》2017年第4期78-85,119,共9页Automation of Electric Power Systems

基　　金：中国铁路总公司科技研究开发计划资助项目(2015J005-A)~~

摘　　要：基于线性回归的谐波阻抗估算方法是常用的谐波阻抗估算方法之一。为确保谐波阻抗估算结果实部与虚部良好的相关性,基于混合建模思想,通过构建复数域偏最小二乘法的准则函数,给出了单因变量复数域偏最小二乘法的严格数学推导及简化求解过程。针对公共连接点处多谐波源情形,基于实测录波数据,通过分析各馈线电流波动量之间的关系,构建了用于筛选关注谐波源谐波电压和电流线性良好数据的指标因子;进而利用复数域偏最小二乘法估算相应的等值谐波阻抗;最终根据所提等值法实现各谐波源责任的定量划分。通过仿真及实测算例验证,体现了所提方法的可行性及有效性。The estimation of the harmonic impedance based on linear regression is one of the commonly used estimation methods. In order to ensure the correlation between real part and imaginary part of the harmonic impedance estimation, the strict mathematical derivation and simplified solution procedure of the single dependent variable complex domain partial least square method is presented. In view of the responsibility distinction for multiple harmonic sources at the public connection point, based on the actual recorded data, by analyzing the relationship between the current fluctuation of each feeder line, the index factor has been obtained, which is used to get the dominant fluctuation filtering to screen the data between voltage and current with good linearity. Then regression in the of the equivalent complex field. Fi method proposed the harmonic impedance of the equivalent system is estimated by the partial least squares nally, the quantitative responsibility distinction of each harmonic source is realized by virtue , its feasibility and effectiveness are verified by simulation and experimental results.

关 键 词：多谐波源 责任划分 复数域偏最小二乘法 数据筛选 等值谐波阻抗 

分 类 号：TM711[电气工程—电力系统及自动化]