基于耦合对象控制需求解析及仿人修正的协调控制方法应用  

Application of Coordinated Control Method Based on Analysis of Coupled Object Control Demand and Humanoid Correction

作　　者：王锡辉 陈厚涛 盛杰 周科[2] 朱晓星 王志杰 何洪浩 WANG Xi-hui;CHEN Hou-tao;SHENG Jie;ZHOU Ke;ZHU Xiao-xing;WANG Zhi-jie;HE Hong-hao(Hunan Province Key Laboratory of High Efficiency&Clean Thermal Power Technology,State Grid Hunan Electric Power Company Research Institute,Changsha 410007,China;Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710032,China)

机构地区：[1]国网湖南省电力有限公司电力科学研究院,高效清洁火力发电技术湖南省重点实验室,长沙410007 [2]西安热工研究院有限公司,西安710032

出　　处：《科学技术与工程》2022年第36期16047-16054,共8页Science Technology and Engineering

基　　金：国网湖南省电力有限公司科技项目(5216A520000B)。

摘　　要：绝大部分火电机组进行深度调峰时,协调及主要自动控制系统无法有效投入,机组变成纯手操模式,增加了操作人员劳动强度。为解决该问题,提出了一种基于耦合对象控制需求解析及仿人修正的协调控制方法。采用状态函数计算多变量系统输出的实时状态,形成状态矩阵,针对每一种状态分析所有输入变量的调节需求并归类,对每一类需求设计仿人修正指令,叠加至线性控制系统中,改善了强耦合系统的协调性能,提升了控制系统的稳定性和抗扰能力。将所述控制方法在某630 MW超临界组上开展了工程应用,实现了该机组协调系统在28.7%~100%负荷区间运行的全自动控制,湿态稳定运行、湿态变负荷、转态、干态稳定运行以及干态变负荷等过程的控制品质较行业标准指标提升了25%~75%,全工况下无需降参数运行,在保障机组宽负荷调峰运行经济性的前提下提高了自动化水平。When thermal power units conduct deep peak shaving,most of them the coordination and main automatic control systems cannot be put into operation,and the units become pure manual operation mode,which increases the labor intensity of operators.In order to solve the above problem,a coordinated control method based on analysis of coupled object control demand and humanoid correction was proposed.The real time multivariable system output was calculated by using state function and form a state matrix.For each kind of state in the matrix,adjusting demand of all input variables was analyzed and categorized.Humanoid correction command was designed for each type of demands and superimposed on the linear control system,which improved the coordination performance of the strongly coupled system,and enhanced the stability and disturbance rejection ability of the control system.The control method was applied in a 630 MW supercritical unit,achieving the goal that the unit coordination system can be automatically controlled in 28.7%~100%rated load range.Compared to the industry standard index,the control quality by using the method of this work enhanced by 25%~75%in conditions of stable operation in wet mode,load variation in wet mode,operating mode conversion,stable operation in dry mode and load variation in dry mode.Under all operation conditions,there is no need to reduce the parameter,which improves the automation level on the premise of guaranteeing the economy of wide load peak-shaving operation of a unit.

关 键 词：耦合系统 协调控制 需求解析 仿人修正 宽负荷调峰 

分 类 号：TK232[动力工程及工程热物理—动力机械及工程]