200MW锅炉-汽机系统动态特性的快速仿真模型

J.P.McDonald等人根据第一原理和实验数据建立的200MW锅炉-汽机系统动态特性的非线性仿真模型由于其准确可靠的特性,近年来又被用于锅炉的模型辨识和锅炉的自适应控制的研究.然而对于控制系统的研究者来说.这个模型显得过于复杂,仿真计算时间偏长.为此,笔者对这个模型进行了多方面的改进:首先简化了数学模型,其次改进了计算方法,再次重新设计了优化的仿真系统程序,最后得到一个新的锅炉-汽机仿真系统.这个新系统被证实既保持了准确可靠的特点.又计算迅速,使用方便.

Fast Simulation Model for Dynamic Characteristics of 200 MW Boiler-turbine System

The non-linear model for dynamic characteristics of 200 MW reheat boiler -turbine, which is set up by J. P. McDonald et al. with the first principle and experimental data, has been used recently in the studies of model identification and adaptive control of electric power plants, due to its reliability and accuracy. However, for the studies of control system, the model seems to be too complex and demands too long time for simulation computation. Therefore, in this paper, the model is improved in many ways: firstly, it is simplified on the mathematical formulae; secondly, the methods for its computation are improved; and thirdly, an optimal simulation system program is designed. It is verified that the new simulation system of boiler - turbine not only remains the features of accuracy and reliability, but also is fast in computation and convenient in use.