电站锅炉燃烧系统仿真模型的建立

在电站锅炉实时仿真系统中，人们多采用传统的零维模型对燃烧系统建模。因为仿真的目的就是要模拟实际系统在整个工作范围内的动态行为，但是零维模型对燃烧系统这一复杂过程进行了过分的简化，因此当系统运行的负荷在较大波动时，零维模型与实际系统之间将会产生很大的误差。本文在适当的假设条件下建立了能反映燃烧系统内部状态的一维模型，并对模型进行了仿真，仿真结果说明了本模型具有很高的精度。该模型已应用于一台210MW火电机组的仿真中，说明了它的适用性。

The Building of a Simulation Model for a Utility Boiler Combustion System

In a real time simulation system for a utility boiler it is common practice to adopt a zero dimensional model for building a model of combustion system. This is understandable, because the aim of a simulation consists in simulating the dynamic behavior of an actual system in its full range of operation. However, the zero dimensional model has oversimplified the complicated process of a combustion system. In view of this, when the operating load of a system fluctuates over a relatively large range, there will emerge a very large error or difference between a zero dimensional model and an actual system. Under proper hypothetical conditions the authors have set up a one dimensional model capable of reflecting the interior conditions of a combustion system and performed a simulation of the model. The results of simulation indicate that the recommended model features a very high precision. It has already been employed on the simulation of a 210 MW thermal power plant with its suitability for the intended purpose being verified.