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由清华大学等单位联合研制的水电机组状态监测分析诊断系统（ 简称 Ｐ Ｓ Ｔ Ａ Ｉ系统） ， 于１９９７ 年１１ 月在广州抽水蓄能电厂１ 号机上投入使用， 经过一年多的运行检验， 已於１９９８ 年１２ 月通过技术鉴定并受到好评。该系统硬件采用基于 Ｉ Ｐ Ｃ 的数据采集系统及上、下位机网络通信的分层分布结构； 软件采用基于 Ｗｉｎｄｏｗｓ Ｎ Ｔ 操作系统，实现了复杂的并行多任务调度机制。该厂还结合机组检修， 根据系统对１ 号机提供的导轴承瓦温和大轴摆度（ 轴振） 等异常情况及诊断处理措施， 对机组进行了有针对性的局部安装调整， 取得了满意的结果。该系统的成功使用， 为水电机组按状态实施检修和预测性维护提供了技术手段； 但由于该系统研制时间短， 且是初次使用， 尚需进一步积累经验， 有些系统功能及仿真计算等方面也有待改进和完善。
The condition monitoring analysis and diagnosis system (referred to as P S T A-I system) jointly developed by Tsinghua University and other units was put into operation in Guangzhou Pumped Storage Power Plant No.1 in November 1997. After more than one year’s operation test , In December 1998 passed the technical appraisal and received praise. The hardware of the system uses Ip C-based data acquisition system and hierarchical distribution structure of upper and lower computer network communication. Software based on Windows NT operating system, to achieve a complex parallel multi-task scheduling mechanism. The plant also combined with unit maintenance, according to the system on the 1st machine to provide the bearing bush mild swing (shaft vibration) and other anomalies and diagnosis and treatment measures, the unit was targeted for local installation and adjustment, and achieved satisfactory the result of. The successful use of this system has provided a technical measure for hydropower units to carry out overhaul and predictive maintenance according to their status. However, due to the short development time of the system and its initial use, it still needs further experience and some system functions and simulation calculations Need to improve and perfect.