燃气轮机联合循环控制建模与策略优化

论文总字数：27147字

摘 要

本毕业设计任务以HDGT机组可靠性优化为目标，首先，通过整合国内主要联合循环电厂故障分析报告和美国通用电气公司技术资料信函中所出现的控制系统故障案例，来提出并且总结适用于国内机组运行特点的事故处理或预控措施，从而为国内现在和将来的HDGT机组热控系统提供宝贵的经验和数据资料。其次通过Matlab/simulink仿真软件对397MW机组进行简易的控制建模，并且对设计的模型进行运行于额定工况下的三种情况下进行模拟，对仿真结果进行分析。

本文主要总结了因国内机组运行特点而引发的故障案例，因此在本文基础上延伸出的故障分析汇总对国内联合循环机组的运行具有深刻意义。同时本文的HDGT机组建模是在经典Rowen模型上增加了余热锅炉和汽轮机部分，其基本原理适用于任何规模的燃气轮机。

关键词：Rowen模型；联合循环；故障分析；PID控制

F-class gas turbine combined cycle control modeling and optimization strategy

03012128 Yang Dejin

Supervised by Pan Lei

Abstract： Heavy-duty gas turbine combined cycle unit is the mainstream application of natural gas power generation device in our country. Because of the often used for power grid peak shaving, HDGT unit control strategy is related to production safety and power quality.

This graduation design task is to HDGT optimal reliability as the goal, first of all, by integrating the domestic main failure analysis reports of combined cycle power plants and control system faults occurred in the case of the technical information letter from GE company, to put forward treatments and measures which are suitable for the domestic accidents, provides valuable experience and datas for the present and the future domestic HDGT thermal control system. Secondly the paper is supposed to establish a  simple control model of 265MW unit through Matlab/simulink software.The designed model operates in the three conditions of measurement under the rated conditions simulation,and give the analysis of simulation results.

This paper summarizes  the equipment operation failure cases with the internal characteristics of domestic combined cycle plants, therefore, in this paper, based on the extended fault analysis summary for the operation of the combined cycle unit has profound significance.HDGT unit modeling of the paper is based on the classical Rowen model adding to the heat boiler and steam turbine parts, the basic principle of the model is applicable to any size of gas turbine.

Key words: Rowen model；Combined cycle；Failure analysis；PID control

目 录

第一章 绪论…………………………..................…………………………………………………1

1.1选题背景…………………………………………………………………....................………1

1.2 联合循环机组简介…………………………………………………………………………2

1.3 联合循环机组建模发展现状……………………………………………...…………………4

1.4 论文研究的主要内容……………….......……………...…………………………………… 5

第二章 F级燃气轮机联合循环控制建模………...............………………………………………6

2.1 前言………………………………………………...................................................................6

2.2 F级燃气轮机建模过程……………………………......…………...............................………6

2.2.1 Rowen模型基本原理………………………………………….....................................……6

2.2.2 负荷频率控制回路………….….................................................………………………7

2.2.3 加速度控制回路……………...............................................………………………………8

2.2.4 温度控制回路和进口导叶控制…………….....................………………………………11

2.2.5 燃气透平输出功率………….........................................…………………………………15

2.3 余热锅炉建模过程……………............................................………………………………16

2.4 汽轮机建模过程……………...............................................………………………………19

第三章 397MW联合循环机组模型仿真结果……......………...…………………………………21

3.1 397MW联合循环机组模型…………………...............................……………………………21

3.2 额定负荷下的模型性能……………………....................................………………………21

第四章 重型燃气轮机控制系统故障案例分析…………….………………………………27

4.1 引言………………………....................................................................……………………27

4.2 DLN燃烧控制系统………………................................................……………………………27

4.3 启动控制系统……………......................................................………………………………30

4.4 温度控制系统……………………....................................................………………………32

4.5 加速控制系统…………………............................................……………………………33

第五章 结束语……………........................................................………………………………35

致谢……………………………………………………………………………………………36

参考文献………………………………………………………………………………………37

F级燃气轮机联合循环控制建模与策略优化

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