联合循环电站在线性能计算及分析诊断

On-line Performance Calculation and Fault Diagnosis of a Combined Cycle Power Plant

采用理论分析与历史运行数据相结合的方法进行联合循环电站的变工况性能计算 ,根据计算结果判断各系统性能是否下降 ,并在分级故障的基础上利用基于BP算法的灵敏度分析法对引起性能下降的原因进行在线诊断 。

By adopting a method combining theoretical analysis with historical operating data an off-design performance calculation was conducted of a combined cycle power plant. Through an evaluation of calculation results one can ascertain whether there is a lowering in performance of any one system. Moreover, on the basis of a graded fault classification to utilize BP algorithm-based sensitivity analytical method, it is possible to perform an on-line diagnosis of the causes triggering a performance deterioration, thus accumulating the experience of combined cycle plant operation and enhancing management level.