針對國外已運行和國內在建的1 000MW超超臨界機組給水泵選型情況,考慮到1 000MW高效率的超超臨界參數機組電廠將來在電力系統中主要承擔基本負荷,在保證機組運行安全、可靠的前提下,通過對主給水泵的型式、容量及啟動/備用給水泵的配置進行技術經濟比較后,建議采用2 ×50%BMCR容量汽動給水泵和25% ～30%的定速啟動泵,提高運行的熱經濟性和運行的可靠性,并降低工程投資。
[關鍵詞] 　超超臨界機組　汽動給水泵　電動給水泵　型式　容量

[ Abstract] 　Pointing to situation of feed pump model used for 1 000 MW extra supercritical ( ESC) units under operation abroad and under
construction in China, considering that the power p lants of 1 000MW ESC unitswill bear the basic load in the system, 2 ×50%BMCR turbine
driving feed pump s and 25%～30% fixed - speed startup pump s are recommended after technical economical comparison ofmodel and capacity
of the main feed pump s, configuration of startup / standby feed pump s in the conditions to ensure the safe and reliable operation of the units. The
p revious arrangement can increase the thermal economy and reliability of operation and reduce the investment on the p roject.
[ Keywords] 　extra supercritical unit; turbine - driving feed pump; motor - driven feed pump; model; capacity