本文首先回顾水电厂综合自动化的在科研试点、实用推广和“无人值班”(少人值守)三个历史阶段的工作历程，然后重点介绍近年来H9000系统结合水电厂“无人值班”(少人值守)工作进行的改进工作，在水电厂创一流和实现AGC方面的经验，H9000 V3.0系统的新功能和兼容性方面的进步。-This article first reviews the hydropower station Automation in the research and pilot projects, practical promotion and " no duty"　(few people on duty) three historical stages of the work of the course, and then focuses on hydropower plants in recent years, H9000 system combines " no duty"　(less person on duty) work carried out to improve work in hydropower plants and the achievement of first-rate AGC experience, H9000 V3.0 new features and compatibility of the system' s progress.