介绍了pscad中关于pi条及其饱和问题的分析及滤波时间常数的选择。：现代 自动控制系统中，串联校正装置大多采用 P l 调节器 ，这主要是 P l 调节器集 比例调节器和积分调节器的优点 ，很

好地解决了系统在动、静态方面的矛盾 。本文主要讨论了 P l 调节器的饱和问题及滤波时问常数的选择 ，并由此导出了滤波

时间常数的选择公式。-Introduced pscad article on pi and saturation analysis of the problem and the choice of filter time constant. : Modern automatic control systems, calibration equipment they use a series regulator P l, mainly P l regulator sets the proportion of regulators and the advantages of integral regulator, a good solution to the system in static and dynamic aspects of the conflict. This paper discusses the P l regulator saturation problem and the choice of filter time constant, and thus derive the choice of filter time constant formula.