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基于实测数据的集中式多谐波源责任评估

DOI: 10.13334/j.0258-8013.pcsee.2014.13.018, PP. 2164-2171

Keywords: 集中式多谐波源,责任区分,实测电流,M估计法,偏最小二乘回归

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Abstract:

多谐波源的责任量化研究,对于谐波“奖惩性方案”的有效实施具有重要意义.针对如何区分多条馈线所接谐波源负荷对公共耦合点处谐波电压的贡献大小(集中式多谐波源)问题,提出基于实测数据并利用M估计方法和偏最小二乘回归方法进行评估的新思路.各次谐波频率下,基于戴维南等值电路建立集中式多谐波源系统的等效数学模型.根据谐波各量之间的关系,提出“理论电流”和“实际电流”的概念,分析了二者之间的关联规律.进而给出用于评价公共耦合点各谐波源责任的指标,并利用上述两种电流分别进行了基于M估计稳健回归和偏最小二乘回归的谐波责任评估.文中对比了两种方法的评估精度,研究表明,偏最小二乘回归方法性能优异,更适合在工程实践中推广应用.

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