| The thermal automatization of Electric power thermal generator set is the important technical measures that ensure equipment safety, improve unit economy, improve electric power production benefit and efficiency lighten intension of labour and amend labour condition.Auto-disturbance-rejection control technique(ADRC) is a practical control system nonlinear synthesis started by researcher Han Jingqing. In this paper, the research objects are the control systems with large thermal power unit, aim at a fewkey problem of this kind of system, such as nonlinear, strong disturbance, big inertia,large time-delay. Research the application of ADRC from theory analyse and computer simulation,study the parameter-tuning of ADRC. The most work of the paper have some aspects there in after:1.Analyse the theory and the structural method of ADRC coneretely. Introduce thestructure of each part of ADRC indetail. At one time, it gives the discrete arithmetic of each part of ADRC and analyse the dynamic characteristics of ADRC.2.Analyse the steam drum boilers and supercritical boiler superheated steam temperature characteristics, and superheated steam temperature in the control and causes of the difficulties.3.It apply ADRC technology to the super-heat steam temperure adjust system. Bring forward new type of super-heat steam temperture control. This shows that ADRC control project validity resolve of the control problem thermal plant and the advantage of control performance.The control scheme by self-developed simulation system for real-time on the STAR-90simulation in North China Electric Power University, experimental results show that the ADRC in main steam temperature control system has good adaptability, robustness and control quality. The design and debug of ADRC system require low precision of model. Or just need little object characteristic in special cires.This brings prodigious facility. It has good in dustry application foreground. |
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