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电网技术  2007 

大型电力系统励磁比例–积分–微分调节器的闭环优化方法

, PP. 49-53

Keywords: 自动电压调节器,比例–积分–微分控制器,时域优化,单纯形算法,电力系统

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Abstract:

采用传统频域方法进行发电机比例–积分–微分(proportionalintegraldifferential,PID)励磁调节器的参数设计时只考虑本机组的运行,而忽视了电网的整体运行情况,且性能好坏取决于设计人员的经验。针对这种情况,提出了基于大型电力系统时域仿真曲线的励磁PID调节器闭环优化方法,既能综合考虑机组和电网的运行情况,又能克服传统设计过于依赖经验的不足。该方法使用时域积分性能指标来评价含有PID调节器的闭环电力系统的综合性能,运用Nelder-Mead单纯形方法来有效搜索最优的PID参数。在实际大型电网中的应用结果表明,该优化方法可有效提高大电网电压的动态调节能力,有很好的实际应用前景。

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