完美超超临界机组过热汽温控制重点.pdf

I 摘要 21世纪以来,我国电力工业正迈向以高效、节能、环保的能源利用和环境并重的可持续发展为战略目标的发展阶段,其重要的标志是超超临界机组正在飞速发展。超超临界发电技术的发展可以创造新的经济增长点,是我国电力工业可持续发展的战略选择。而主汽温控制又直接关系到机组的安全经济运行,因此本课题开展了超超临界机组主汽温控制系统的特性及其控制策略研究。在本篇中将以超超临界参数大型机组控制工程为背景,进一步讨论超超临界机组中关于过热汽温的控制。本篇将讨论大型机组的过热汽温控制策略问题,分析机组过热汽温控制的基本特点,比较不同控制策略的差异,提出过热汽温控制的主要问题,同时通过仿真描述具体的控制策略的实现关键词:超超临界机组,过热汽温,串级PID控制,控制策略 II ABSTACT Sincethe21century,China’s electric Power industry is moving towards an effieient,energysavingenvironmentrolprotection,energyutilizationandthe environmentbothsustainabledevelopmentforthestrategictargetofdevelopment stage,itsimportantmarkofultrasuperiticalunitis powergenerationtechnology’scancreateneweconomiepoints,itis thestrategic choiceofsustainabledevelopmentofchina’s powerindustry,itis theinnovationof economic..Andthemainsteamtemperaturecontrolis direetlyrelatedtothesafeand ,featuresofthemainsteam temperaturecontrolsystemandthemaintemperaturecontrolstrategyoftheultra supereritieal unitsis will future discuss the overheat temperature controlin ultra-supercritical unitwill with large ultra-supercritical parameter control works in the backgroundIn this this article we will discuss the large unit overheat temperature control strategy, analysis of basic unit overheat temperature control pare the differences of different control strategiesthenraise superheat temperature control problems, through realization of control strategy simulation describing specific KEY WORDS: ultrasupercriticalunit, super heated control, cascade PID control,the maintemperaturecontrolstrategy 1 目录摘要........................................................I ABSTACT........................................................II 第1章绪论.....................................................1 研究背景及意义...........................................1 超超临界机组的发展概况...................................1 超超临界机组的发展历程.....