基于动力学机理的反应性扰动下核功率动态特性自回归遍历建模

摘要

本文提出了机理建模与基于最小二乘法的自回归遍历模型参数辨识相结合的建模方法，用于辨识核功率动态特性；建立以外部引入反应性变化为输入，核功率变化量为输出的核功率动态特性数学模型；在Matlab/Simulink中对所建立的模型进行仿真验证，验证了此辨识方法在核功率动态特性模型建立方面的可行性，以及所建模型的可用性。%In this paper ,an identification modeling method was put forward .It com-bines the mechanism modeling and the parameter identification of autoregressive exoge-nous model based on least square method .The dynamic characteristics of nuclear power were identified with this method .The nuclear power dynamic characteristic model with the external reactive change as the input and the nuclear power variation as the output was established .The established model was verified in Matlab/Simulink .The feasibility of the identification method used for modeling of nuclear power dynamic characteristics and the availability of the established model were verified .