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The dynamic unit is one of the most important equipment in modern industry, especially the dynamic steam turbine which is the ordinary but cannot be replaced by others applying motive power for the industry, such as fuel electric plant, power ship and so on. So it is more and more important for industry development, as well as social development. Since the dynamic steam turbine is a kind of the dynamic devices which apply power or transfer energy, its effecticity is more important than its other properties. The high effecticity avails for the use ratio of fuel and the maintain of environment, and directly makes for the productivity of the company itself, even the national economy and the people’s livelihood. So the company hope not only the suitable dynamic unit but also keeping the device from all kinds of potential fault. And when the breakdown comes out, the device can be detected and recovered effectively. Mostly, we do not want the breakdown decrease the productivity, so the recovery in short time is the basic function and the efficiency reach the maximum. Obviously, they are so important that we must design and manufacture with much more precise details, and the turbines can work under much less flaw and can be recovery quickly when it can not work.Before we design for the manufacture of the steam turbine unit according to the reality, firstly, we must analyze and master some basic thermodynamics rules, and their application respectively. Second,we can find the improvement for the design according to the company’s requirement, and achieve better design and better mathematical models. Finally, we get much better dynamic setup. So, in this paper, we cut off the difference between company requirements, then discuss the common rules about the steam turbines and model the heater, the noumenon and the economic properties. Modeling system is helpful for our design and manufacture, in addition, it is useful for the fault detection and recovery. Under this schema, after the system analysis and modeling, we go deep into the turbine fault detection and the turbine recovery. With the logic flow about principle analysis, mathematical modeling and the turbine maintainace, finally we achieve some results about the turbine modeling and fault detection.In the paper, we have a research for the heating power system at first. Based on the research, we discuss the performance of the dynamic steam turbine. Then it constructs some appropriate module models according to the process of the heating. At last, we make a deep research about the fault diagnosis which comes out in the steam turbine running. Finally, we achieve this research positive result from the theory and the application of the steam turbine.
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