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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。
The transformation of No.4 unit in Fengman Power Plant was carried out on the basis of summing up the previous plant transformation experience of the plant. Take the first study of turbine capacity transformation, and then supporting the transformation of the generator way. Turbine wheel will be replaced by a new high-speed than the high-speed runner, and supporting the transformation of the generator, the installation of a computer monitoring system. After the transformation of the Unit 4 test indicators have reached the ministerial regulations standards, the unit’s operation stability has been significantly improved to achieve the computer monitoring; increased capacity of the original rated capacity of 44% to 50%, the turbine The average efficiency increased by 25%, annual generating capacity of about 54800000 kW · h.