基于循环水泵变频的1 000 MW超超临界机组冷端综合优化
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张东青, 金铁铮, 张磊
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Comprehensive Optimization of the Cold End of 1 000 MW Ultra-Supercritical Unit Based on Pump Frequency Conversion
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Dongqing ZHANG, Tiezheng JIN, Lei ZHANG
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表3 2机2泵运行时循环水泵变频和运行方式对耗功的影响
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Tab. 3 Influence of frequency conversion and operation mode on water pump power consumption when 2 units and 2 pumps are running
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| 循环水流量/(t/h) | 2机2定频泵 | 2机1变频泵 1定频泵 | 2机2变频泵 |
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| 功耗/kW | 功耗/kW | 变频比 | 功耗/kW | 变频比 |
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| 42 000 | — | — | — | 2 640 | 0.800 | | 44 000 | — | — | — | 2 810 | 0.815 | | 46 000 | — | — | — | 2 992 | 0.833 | | 48 000 | 4 988 | 3 256 | 0.758 | 3 183 | 0.851 | | 50 000 | 5 005 | 3 404 | 0.782 | 3 385 | 0.870 | | 52 000 | 5 017 | 3 575 | 0.809 | 3 598 | 0.890 | | 54 000 | 5 023 | 3 769 | 0.839 | 3 821 | 0.909 | | 56 000 | 5 009 | 3 895 | 0.871 | 4 053 | 0.930 | | 58 000 | 4 966 | 4 218 | 0.906 | 4 293 | 0.950 | | 60 000 | 4 903 | 4 463 | 0.942 | 4 541 | 0.970 | | 62 000 | 4 828 | 4 722 | 0.979 | 4 798 | 0.989 | | 64 000 | 4 862 | 4 998 | 1.000 | 5 068 | 1.000 |
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