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4 2机3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. 4 Influence of frequency conversion and operation mode on water pump power consumption when 2 units and 3 pumps are running
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| 循环水流量/(t/h) | 2机3定频泵 | 2机1变频泵2定频泵 | 2机2变频泵1定频泵 | 2机3变频泵 |
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| 功耗/kW | 功耗/kW | 变频比 | 功耗/kW | 变频比 | 功耗/kW | 变频比 |
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| 56 000 | — | — | — | — | — | 3 936 | 0.800 | | 58 000 | — | — | — | — | — | 4 121 | 0.811 | | 60 000 | — | — | — | — | — | 4 314 | 0.823 | | 62 000 | — | — | — | — | — | 4 519 | 0.835 | | 64 000 | — | — | — | 4 954 | 0.800 | 4 737 | 0.848 | | 66 000 | 7 434 | 5 760 | 0.736 | 5 121 | 0.812 | 4 963 | 0.861 | | 68 000 | 7 449 | 5 867 | 0.763 | 5 302 | 0.828 | 5 198 | 0.874 | | 70 000 | 7 466 | 5 992 | 0.788 | 5 498 | 0.845 | 5 442 | 0.888 | | 72 000 | 7 483 | 6 124 | 0.805 | 5 718 | 0.863 | 5 705 | 0.902 | | 74 000 | 7 502 | 6 259 | 0.817 | 5 956 | 0.881 | 5 979 | 0.916 | | 76 000 | 7 514 | 6 410 | 0.834 | 6 207 | 0.90 | 6 260 | 0.930 | | 78 000 | 7 525 | 6 597 | 0.861 | 6 477 | 0.920 | 6 556 | 0.944 | | 80 000 | 7 532 | 6 820 | 0.893 | 6 763 | 0.941 | 6 860 | 0.959 | | 82 000 | 7 538 | 7 083 | 0.930 | 7 066 | 0.962 | 7 174 | 0.974 | | 84 000 | 7 513 | 7 392 | 0.971 | 7 391 | 0.985 | 7 507 | 0.990 | | 86 000 | 7 475 | 7 736 | 1.000 | 7 733 | 1.000 | 7 851 | 1.000 |
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