热力系统的数模混合仿真

HYBRID SIMULATION OF THERMAL ENGINEERING SYSTEM

从热力系统的特点出发，把系统分成一些典型部件，如管道、轴系、燃煤流化床锅炉等，分别建立动态数学模型，并通过线性化方法，把数学模型转换为状态空间方程。最后，运用数模混合仿真方法，对燃煤增压流化床联合循环（ＰＦＢＣ－ ＣＣ）发电系统烟气侧动态特性进行了仿真计算。

In this paper the thermal engineering systems are divided into several typical components, such as pipe, turbomachine, coal fired fluidized bed combustor, etc. The dynamic models of these components are established. By linearization the space state equations are also deduced. In order to get a real time dynamic performance, a hybrid simulation system has been set up using an analog computer (DMJ130A) and two digital computers (Pentium 150 and PentiumⅡ 233), one of which is used as model generator and the other as controller. As an example, the dynamic performances of a pressured fluidized bed combustion combined cycle (PFBC CC ) system are given by use of the hybrid simulation system developed.