最后，就采用综合自动化系统进行无人值班变电站设计和运行的一些技术经济判据进行了讨论。

Finally, the techno-economic criteria of design and operation of non-attended substation using integrated automation system are discussed.

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介绍了以GE90 -3 0 PLC为核心的新型控制设备的特点、功能及其在江垭水电站辅助设备控制系统中的应用，使用结果表明，该系统可满足无人值班、少人值守电站的运行要。

This paper initroduces the feature of new control equipment, based on GE90 30PLC, its function and appication is auxiliary equipment of control system at Jiangya Hydropower Station.

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