摘要
二次再热技术是当今国际领先的高效清洁的燃煤发电技术。然而,额外增加的再热器及配套设备使得机组热惯性增加,过程控制复杂。为了提高机组灵活性,设计更加智能的控制系统,建立一个能简洁准确描述二次再热机组动态特性的数学模型是首要前提。该文基于质量、能量守恒定律对宽负荷运行下的1000 MW超超临界二次再热机组进行分析与建模,并通过正交设计的烟花算法辨识模型参数。闭环仿真结果表明,在所使用的数据集中,协调系统与主蒸汽温度系统输出误差不超过0.7%,再热蒸汽温度误差不超过1.3%;开环仿真表明,模型能够反映机组的动态特性,可以作为协调与主、再热蒸汽温度控制系统控制器设计的依据。
Double-reheat technology stands out as an international leading coal-fired power generation technology for its high efficiency and cleanliness.However,the inclusion of an additional reheater elevates the thermal inertia of the thermal power unit,leading to greater complexity in process control.To enhance the flexibility and design a more intelligent control system,establishing a mathematical model that can concisely and accurately describe the dynamic characteristics is a paramount prerequisite.In this paper,based on the laws of mass and energy conservation,an analysis and modeling of a 1000 MW ultra-supercritical double-reheat unit during wide load operation are conducted,and the model parameters are identified through the orthogonally designed fireworks algorithm.Close-loop simulation has demonstrated that within the dataset used in this study,the error outputs of the coordination system and the superheated steam temperature system is below 0.7%,and the reheated steam temperature error is below 1.3%.Open-loop simulation has indicated that the model can reflect the dynamic characteristics of the unit and can serve as a basis for the coordination and design of controllers for main steam and reheated steam temperature control systems.
作者
谢衍
曾德良
胡勇
朱岩松
李瑞连
刘吉臻
XIE Yan;ZENG Deliang;HU Yong;ZHU Yansong;LI Ruilian;LIU Jizhen(State Key Lab of Alternate Electric Power System with Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China)
出处
《中国电机工程学报》
北大核心
2025年第17期6841-6853,I0019,共14页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
国家自然科学基金项目(61833011)。
关键词
二次再热
超超临界机组
动态数学模型
协调控制系统
主/再热蒸汽温度
double-reheat
ultra-supercritical unit
dynamic mathematical model
coordinated control system
superheated/reheat steam temperature
作者简介
谢衍(1998),男,博士研究生,主要研究方向为超超临界机组的建模与控制,120212127011@ncepu.edu.cn;曾德良(1969),男,教授,主要研究方向为复杂热力过程智能控制与运行优化,zdl@ncepu.edu.cn;通信作者:李瑞连(1992),男,博士研究生,主要研究方向为火电机组污染物排放控制、优化与建模,lrl911007@163.com。
