单元机组协调控制系统综合性能评价

发布时间：2018-07-01 08:48

本文选题：协调控制系统 + 等效开环传递函数　；参考：《动力工程学报》2017年11期

【摘要】：针对多变量形式的单元机组协调控制系统,提出一种基于等效开环传递函数的性能评价方法.将该方法与最小信息熵指标相结合,解决了协调控制系统受到非高斯噪声干扰时,传统多变量评价方法对系统随机性性能评价不准确的问题.将系统确定性性能指标处理成标量形式,通过子目标乘除法与随机性性能指标结合,得到兼顾确定性性能与随机性性能的综合性能指标.利用该综合性能指标指导协调控制系统控制器设计,将其作为目标函数,通过优化算法对控制器参数进行寻优,得到最优控制性能.以最优指标作为基准,对系统在运行期间的性能进行监测与评价.结果表明:对于该协调控制系统,自抗扰控制器比内模PI控制器具有更好的综合性能,稳健性也更好.
[Abstract]:A performance evaluation method based on equivalent open loop transfer function is proposed for coordinated control system of multivariable unit. The method is combined with the minimum information entropy index to solve the problem that the traditional multivariable evaluation method is inaccurate in evaluating the stochastic performance of the system when the coordinated control system is disturbed by non-Gao Si noise. The deterministic performance index of the system is treated as a scalar form. By combining the subobjective multiplication and division method with the stochastic performance index, a comprehensive performance index which takes into account the deterministic performance and the stochastic performance is obtained. The integrated performance index is used to guide the controller design of the coordinated control system, which is regarded as the objective function. The optimal control performance is obtained by optimizing the parameters of the controller. The performance of the system during operation is monitored and evaluated with the optimal index as the benchmark. The results show that the ADRC controller has better comprehensive performance and robustness than the internal model Pi controller for the coordinated control system.
【作者单位】：华北电力大学控制与计算机工程学院;
【基金】：国家自然科学基金资助项目(61240037,51676068)
【分类号】：TM621.6

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