基于波动量相关性分析的多谐波源责任划分方法  

A Multi-harmonic Sources Identification Method Based on Correlation Analysis

作　　者：王裕喜 Wang Yuxi(Training and Appraising Center of Yunnan Power Grid Co.,Ltd.,Kunming 650221,Yunnan)

机构地区：[1]云南电网有限责任公司培训与评价中心,云南昆明650221

出　　处：《云南电力技术》2021年第6期52-55,共4页Yunnan Electric Power

摘　　要：针对谐波责任划分问题,提出了一种基于波形相关度分析的多谐波源辨识方法。首先测量馈线的主导次谐波电流以及母线谐波电压,然后通过功率方向判断是否为谐波发射源,再采用波动量法分析各馈线谐波电流与公共连接点处谐波电压的相关性,最后依据相关性指标判定各馈线对公共连接点处谐波污染的责任。与传统的谐波源责任划分方法相比,该方法不需要基于谐波阻抗的数学建模,具有操作简便的优点。通过对云南电网某110 kV变电站35 kV干扰源实测数据的分析,验证了所提方法的有效性。Aiming at the problem of harmonic responsibility division,a multi harmonic source identification method based on waveform correlation analysis is proposed.The first measurement of the dominant harmonic current and feeder bus harmonic voltages,to determine whether the harmonic emission source and then through the power direction,then the fluctuation analysis of each feeder harmonic current and harmonic voltage at the point of connection between the public,according to correlation index of each feeder to the point of common coupling harmonic pollution liability.Compared with the traditional method of harmonic source responsibility division,this method does not need mathematical modeling based on harmonic impedance,and has the advantages of simple operation.The effectiveness of the proposed method is verified by the analysis of the measured data of the 35 kV interference source in a 110 kV substation in Yunnan power grid.

关 键 词：谐波源辨识 波动量法 相关性分析 责任划分 

分 类 号：TM74[电气工程—电力系统及自动化]