把分布式人工智能应用到大型电站设备故障诊断问题之中，提出了大型电站分布式智能监测与诊断系统的基本结构，它可以把不同的故障诊断推理方法有机地结合起来运用，并介绍了采用多层黑板结构模型的协调与通讯方法，最后给出了大型电站热力系统状态监测和汽轮发电机组振动故障诊断的应用实例 The distributed artificial intelligence is applied to the fault diagnosis of large scale power plant equipment. The basic structure of the distributed intelligent monitoring and diagnosis system for large scale power plant is put forward. It can combine different fault diagnosis reasoning methods organically and introduces the use of Multi-layer blackboard structure model coordination and communication methods, and finally gives the application of thermal power plant condition monitoring and fault diagnosis of steam turbine generator set