对我国电站仿真技术的发展过程与建模理论的研究进行了论述和分析，重点阐述了20年来火电机组仿真技术从科学研究到产业化和使我国火电仿真机数量上跃居世界第一位、质量上达到世界先进水平的进展过程，给出了我国电力仿真机的分布情况；综述了我国电站系统仿真的核心技术——热工对象的建模理论和技术的研究状况，分析了集总参数模型、分布参数模型和高精度集总参数动态修正模型等不同的建模方法应用于不同的仿真对象和仿真目的。

In this paper the development of simulation technologies and modeling theory of the fossil power generating unit in China is discussed and analysed. Authors described developing process of the fossil power simulators from scientific researches to achieving the most quantity in the world. While the information of electric power simulators distributed over the world is given. The key technologies——modeling theory and method of the thermal system simulation are summarized. Authors expounded the lumped parameter model, distributed parameter model, dynamic revised model of high precision lumped parameter and other model. These model equations are applied various simulated objects and different simulation precision.