【摘要】 丰满发电厂4号机组的改造是在总结该厂以往7台机组改造经验的基础上进行的。采取了先研究水轮机增容改造,再进行发电机的配套改造的方式。将水轮机转轮更换成较高比转速的新型高效转轮,并配套改造了发电机,安装了计算机监控系统。改造后的4号机组各项测试指标均达到了部颁规程规定的标准,机组的运行稳定性有了明显提高,实现了计算机监控;增加的容量为原额定容量的44%～50%,水轮机平均效率提高25%,年增发电量约5480万kW·h。更多还原

【Abstract】 The technical transformation of No 4 generating unit of Fengman Hydropower Plant is conducted on the basis of summing up the past transformation experience of the seven generating units The capacity increase of turbine is firstly transformed and then the counterpart transformation of power generator is made The rotation wheel was replaced by a new high effective wheel with high specific rotation speed At the same time, its power generator is also transformed and the computer supervisory system is installed The various measured indexes of transformed No 4 generating unit all meet the standards specified by the codes at ministry’s level The operation stability of generating unit has been enhanced obviously and the computer monitoring and control achieved The increased capacity is about 44% 50% of the original rated capacity The average efficient of turbine increases 2 5% and the annual energy output increases about 54 8 million kW·h更多还原