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着重对电力系统中用来滤除高次谐波的全极点低通滤波器的元件参数在国家标准允许的容差内变化时对滤波器性能带来的误差进行了分析研究，以便用控制元件精度的方法来满足电力控制中对这类滤波器的指标要求，并且在这一分析的基础上开发了一套简易的ＣＡＤ软件，利用它可对滤波器所需元件参数的精度提出具体要求，从而弥补了现有滤波器设计ＣＡＤ软件中对元件误差未予考虑的不足．
Focus on the power system used to filter out the higher harmonics of the all-pole low-pass filter component parameters in the allowable tolerance of the national standard changes when the filter performance error analysis, in order to use the control element Precision method to meet the power control requirements of such filters, and based on this analysis has developed a simple set of CAD software, which can be used to filter the accuracy of the required component parameters put forward specific requirements, Which makes up for the lack of component error in the existing filter design CAD software.