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分析了１２５ＭＷ机组的过热器减温水流量增加的原因及引发调速给泵在高荷范围耗能大于定速给泵的普遍现象。介绍了吴泾电厂率先在ＤＧ５００—１８０调速泵内加装减温水升压泵，恢复调速泵全程节电的效果。改进后年节电１８０万ｋＷ·ｈ。
The causes of increase of water flow rate of superheater in superheater of 125MW unit and the general phenomenon that pump speed is higher than fixed speed at high load range are analyzed. Introduced the Wujing Power Plant took the lead in DG500-180 speed pump installed booster water pump to restore speed governor pump power saving effect. Improve the year after saving 1.8 million kW · h.