热力站最小二乘建模法仿真研究

Simulation Study on Least Square Modeling of Consumer Substation

针对集中供热热力站一类热工对象,提出一种基于典型信号响应的最小二乘建模方法。方法的原理是在已知典型脉冲、阶跃、斜坡信号响应的条件下,按照最小二乘的模式,推导出被辨识连续系统模型参数。应用该方法对一个实际热力站的供热过程模型进行辨识,仿真研究表明,与其他常规辨识方法相比,所取得的辨识结果的精度有明显的提高。该方法简单、易行,具有较好的实用性。

With respect to thermal dynamic object for a district heating consumer substation, a least square modeling method based on typical signal responses was proposed. The principle of the method was to derivate model parameters of identified continuous system with known typical pulse, step and slope signal response by least square method. The method was used to identify heating process model for a consumer substation. The simulation shows that the identification results obtained are more accurate compared with other conventional identification methods. The method is simple, feasible and practical.