文档介绍:摘要
国产200 MW机组的汽轮机调速系统基本上采用的都是机械液压调节系统。200 MW机组从70, 80年代投运以来,在电力工业中发挥了主力机组的作用,根据国家的产业政策,仍将起着主力机组的作用。为了适应现代化大电网的需求,满足电网运行的各种方式要求,必须对200 MW机组的汽轮机控制系统进行现代化改造。
本论文以国产200MW机组汽轮机调节系统的改造为研究课题,从目前液压调节系统普遍存在的问题入手,结合现代化控制系统的要求及电网发展的需求等方面,简单地阐述了液调改为电调的必要性。
本文论述了汽轮机DEH控制系统改造的可行性、可靠性,并对各种改造方案做了比较。另外,基于Matlib simulink系统仿真对结果进行了分析以及采取了相应的对策。
关键词: 调节系统,机械液压调速, DEH系统, 改造
Abstract
200MW units made in China all adopt mechanical hydraulic speed control systems. 200MW units has been playing main role from 1970s, 1980s when they were put into effect in power industry. According to the motional industrial policy, they will play main role in the future. In order to adapt to the desire of modern work and satisfy with all kinds of needs work running, the speed control systems on turbines of 200MW units must be transferred.
The subject of this paper is to research the retrofit of the governing system of the national 200MWturbine generator, beginning mon problems existing in hydraulic governing system, combining with the depend of modern control system and the development of the electric power grid, discusses skimpily the necessity of modifying the hydraulic governing system into the digital electronic hydraulic system.
This paper discussed the feasibility and reliability of transformation on DEH control system, pares on all kinds of transformation schemes. In addition, In addition, based on Matlib simulink system for the analysis and simulation results to take corresponding countermeasures.
KEY WORDS: speed control systems DEH retrofit
mechanical hydraulic
目录
第一章概论…………………………………………………………..1
汽轮机调节系统的基本组成……………………………………..1
国产200MW机组汽轮机调节系统发展历史及现状……………..1
汽轮机控制系统改造的必要性和可行性分析…………………..5
本课题研究的意义以及内容……………………………………..6
第二章调节系统改造的方案及比较分析……………………………7
同步器控制改造方案……………………………………………..7
电液并存控制改造方案…………………………………………..7
透平油纯电调控制改造方案……………………………………..8
抗燃油纯电调控制改造方案……………………………………..8
各种改造方案的比较……………………………………………..8
结论………………………………………………………………..9
第三章调节系统的静