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Abstract：
The main steam temperature of boiler outlet has been deemed as a significant parameter of the safety and economic performances in the thermal power plant operation. The complex working status of the thermal generation endures highly uncertain factors and remarkable disturbance, which call for effective controlling approaches in the corresponding temperature management. The linear active disturbance rejection controller (LADRC) is a conducive and powerful controlling method, whereas strong correlation between LADRC parameters leads to difficulties in optimally determining the controller parameters. Aiming at eliminating the negative effects on main steam temperature control caused by uncertainties factors and disturbances, a high performance LADRC based on a novel parameters optimization strategy, the simultaneous heat transfer search (SHTS) algorithm, is designed to deliver a stability, rapidity, and precision of control process. In the presented SHTS algorithm, all the three phases of heat transfer are randomly and parallel operated, providing a significant improvement towards the optimization performance. The proposed algorithm is first verified on various benchmark functions contrasted to state-of-the-art counterparts in performance validating, and then adopted in the parameter selection of LADRC in the main steam temperature control system. The excellent control performance, strong robustness and disturbance rejection ability of the designed approach are illustrated through the simulation results on main steam temperature control system.
摘要：
锅炉出口主蒸汽温度被认为是火电厂运行安全和经济性能的重要参数。热发电的复杂工作状态承受着高度不确定因素和显著扰动,这要求在相应的温度管理中采用有效的控制方法。线性自抗扰控制器(LADRC)是一种有效的控制方法,而LADRC参数之间的强相关性导致难以最佳确定控制器参数。为了消除不确定因素和干扰对主汽温控制的负面影响，基于新型参数优化策略的高性能LADRC，同时传热搜索(SHTS)算法，旨在提供稳定性，快速性,控制过程的精度。在提出的SHTS算法中，所有三个传热阶段都是随机并联运行的，为优化性能提供了显著的改进。所提出的算法首先在各种基准函数上进行验证，与性能验证中的最先进的对应物相比，然后在主蒸汽温度控制系统中采用LADRC的参数选择。优良的控制性能，主蒸汽温度控制系统的仿真结果说明了所设计方法具有较强的鲁棒性和抗干扰能力。
