负荷扰动下电厂控制系统性能评价的理论研究

Research for Assessing the Performance of Control System Subject to Random Load Changes

针对热工控制系统模型,介绍了基于随机扰动的闭环控制系统性能评价方法。通过计算负荷扰动下误差响应曲线峰值前、后的面积比来获得性能评价指标。以临界阻尼为界,可以计算出任意阶次闭环传递函数的性能评价指标R,得到系统性能优劣的分界线。

The paper has described a new method for assessing the performance of thermodynamic processes in coal-fired power plant. It is a mean for closed loop system subject to random load change. By computing the areas before and after the peak in the case of critical damping in a load change response,we can get a special point of second-order model for assessing the performance.