提出了对复杂系统进行故障诊断的系统划分策略 ,并以电站中的凝结水系统为例 ,介绍了系统仿真的方法及模型 ,探讨了使用实时系统仿真模型与故障模型来进行故障判断及诊断的方法。本方法不仅可以对系统中的部分常见故障 (如管道的泄漏与堵塞 )进行诊断 ,而且解决了复杂系统中剩余量生成困难的问题 ,为实时的、自主型的故障诊断系统在电站中的应用打下了基础。 A system partitioning strategy for fault diagnosis of complex systems is proposed. Taking the condensate system in power plant as an example, the methods and models of system simulation are introduced. The real-time system simulation model and fault model are used to diagnose and diagnose faults method. The method can not only diagnose some common faults in the system (such as pipeline leakage and blockage), but also solve the problem of generating residual quantity in complex systems, and provide a real-time and autonomous fault diagnosis system for power plants. Laid the foundation.