基于LMIs的电站燃煤机组协调控制系统设计

发布时间：2018-03-28 04:25

  本文选题：协调控制系统　切入点：线性矩阵不等式(LMIs)　出处：《华北电力大学》2017年硕士论文

【摘要】：协调控制系统是电站燃煤机组中非常重要的组成部分,是火电厂能够安全、有效、自动化运行的有力保障,对燃煤机组的运行品质有着重要的影响。随着火电行业不断的发展前进,500MW和1000MW的大型单元机组已经成为电力系统的主力机组。同时,根据电网的负荷需求指令和电网的频率偏差要求,电厂不仅需要保障机组本身的安全稳定的运行,还要参加电网调峰、调频,而这些要求的基础是协调控制系统具有优秀的控制能力。这些来自外界连续不断的压力,迫使电厂对协调控制系统的性能要求越来越高。本文基于H_∞控制方法和H_2控制方法,设计了基于线性矩阵不等式(LMIs)的电站燃煤机组协调控制系统。H_∞控制和H_2控制都属于鲁棒控制,能处理具有多变量、强耦合、大迟延、非线性、不确定干扰的系统控制问题。本文根据H_∞控制和H_2控制的算法推导出H_∞控制和H_2控制控制律,进一步设计了基于LMIs状态反馈H_∞控制器和基于LMIs的状态反馈H_2控制器,然后以500MW燃煤机组协调控制系统为被控对象,在100%、95%和50%三个工况下进行了仿真研究,最后进行对给定值的跟踪测试和抗干扰性能仿真测试。最终的仿真结果表明,基于LMIs状态反馈H_∞控制器和基于LMIs的状态反馈H_2控制器都具有良好的控制品质。
[Abstract]:The coordinated control system is a very important part of coal-fired units in power plants, and it is a powerful guarantee for the safe, effective and automatic operation of thermal power plants. With the continuous development of the thermal power industry, the large units of 500MW and 1000MW have become the main units in the power system. According to the demand instructions of the power grid and the frequency deviation requirements of the power network, the power plant not only needs to ensure the safe and stable operation of the unit itself, but also to participate in the peak shaving and frequency modulation of the power network. These requirements are based on the excellent control capability of the coordinated control system. The continuous pressure from outside forces the power plant to demand higher and higher performance of the coordinated control system. This paper is based on the Hinfinity control method and HAP2 control method. The coordinated control system. H _ 鈭，

本文编号：1674750