基于仿真模型的对分式凝汽器故障样本知识提取研究

在热力设备实施故障诊断的过程中，由于设备、系统及故障本身的复杂性，常见的故障样本知识提取方法往往不能准确、完善地建立热力设备的故障诊断知识库。为此，结合仿真技术在电站热力设备和系统模型方面的优势，提出一种基于模型的热力设备故障样本知识提取新方法。运用该方法，通过建立对分式凝汽器的动态数学模型进行详细的故障仿真试验，结合现场运行经验和理论分析，总结、完善了对分布凝汽器的典型故障知识库。

A Study on the Extraction of Sample Knowledge Concerning Faults and Malfunctions of a Dual-channel Steam Condenser on the Basis of a Simulation Model

In performing a fault diagnosis of thermal equipment it is usually difficult to create accurately and adequately a fault diagnosis knowledge base for the concerned equipment. This comes about because of two reasons: 1. Complexity of equipment, system and faults themselves; 2. Improper method of extracting the sample knowledge of frequently encountered faults. To cope with this problem, a new method for extracting fault sample knowledge of thermal equipment has been proposed by taking advantage of the technical edge enjoyed by simulation technology in the modeling of power station equipment and systems. By the use of the proposed method and through the creation of a dynamic mathematical model for a double channel condenser a detailed simulation test of the equipment faults was conducted. On the basis of summing up on site operating experience and performing a related theoretical analysis a typical fault knowledge base has been finally consummated for the dual channel steam condenser.