基于循环水泵变频的1 000 MW超超临界机组冷端综合优化

张东青, 金铁铮, 张磊

Comprehensive Optimization of the Cold End of 1 000 MW Ultra-Supercritical Unit Based on Pump Frequency Conversion

Dongqing ZHANG, Tiezheng JIN, Lei ZHANG

表5 2机4泵运行时循环水泵变频和运行方式对耗功的影响

Tab. 5 Influence of frequency conversion and operation mode on water pump power consumption when 2 units and 4 pumps are running

循环水流量/(t/h) 2机4定频泵 2机2变频泵2定频泵 2机4变频泵 功耗/kW 功耗/kW 变频比 功耗/kW 变频比 66 000 — — — 5 301 0.805 68 000 — — — 5 501 0.814 70 000 9 552 6 813 0.754 5 708 0.824 72 000 9 611 6 958 0.771 5 934 0.834 74 000 9 670 7 117 0.788 6 170 0.845 76 000 9 723 7 279 0.803 6 411 0.856 78 000 9 773 7 447 0.818 6 665 0.866 80 000 9 804 7 615 0.831 6 927 0.877 82 000 9 836 7 781 0.842 7 198 0.888 84 000 9 865 7 960 0.853 7 488 0.900 86 000 9 897 8 145 0.863 7 788 0.911 88 000 9 911 8 339 0.874 8 092 0.923 90 000 9 928 8 557 0.888 9 412 0.934 92 000 9 942 8 796 0.905 8 745 0.946 94 000 9 959 9 062 0.924 9 092 0.958 96 000 9 977 9 361 0.946 9 454 0.971 98 000 10 000 9 688 0.968 9 823 0.983 100 000 10 009 10 049 0.992 10 205 0.996