Nuclear power station main pump state monitoring and diagnosing method and system

The invention relates to a nuclear power station main pump state monitoring and diagnosis method and system, and the method comprises the following steps: S1, data collection and monitoring point determination: reading the file data of a main pump, including reactor cooling technical specification data, reactor safety analysis data, main pump operation data and main pump drawing data, and reading main pump instrument data and monitoring point codes; S2, establishing a multiple nonlinear regression model for the main pump. 本发明涉及一种核电站主泵状态监测诊断方法和系统，所述的方法包括以下步骤：S1：数据收集并确定监测点的步骤，包括：读取主泵的文件资料数据，包括反应堆冷却技术规范数据、反应堆安全分析数据、主泵运行数据、主泵图纸数据；读取主泵仪表数据和监测点编码；S2：针对主泵建立多元非线性回归模型的步骤。