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6 宁海1 000 MW机组最佳运行背压和循环水量
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Tab. 6 Optimal operating back pressure and circulating water flow of Ninghai 1 000 MW unit
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| 日期 | 环境温度/℃ | 环境湿度/% | 100%负荷 | 75%负荷 | 50%负荷 |
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| 最佳背压/kPa | 循环水量/(t/h) | 最佳背压/kPa | 循环水量/(t/h) | 最佳背压/kPa | 循环水量/(t/h) |
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| 01.01—01.15 | 7.8 | 55.5 | 4.7/8.3 | 36 000 | 3.5/5.4 | 36 000 | 2.7/3.9 | 35 000 | | 01.16—01.31 | 7.0 | 67.5 | 4.5/7.8 | 38 000 | 3.5/5.5 | 38 000 | 2.6/3.7 | 37 000 | | 02.01—02.14 | 5.5 | 49.3 | 4.2/7.4 | 38 000 | 3.4/5.6 | 34 000 | 2.5/3.7 | 33 000 | | 02.15—02.28 | 9.8 | 68.6 | 4.7/7.8 | 42 000 | 3.7/5.6 | 42 000 | 2.8/3.9 | 42 000 | | 03.01—03.15 | 14.5 | 59.3 | 4.8/7.5 | 50 000 | 4.0/5.7 | 50 000 | 3.2/4.1 | 50 000 | | 03.16—03.31 | 14.9 | 62.6 | 4.8/7.4 | 55 000 | 4.0/5.5 | 55 000 | 3.2/4.1 | 53 000 | | 04.01—04.15 | 19.2 | 56.0 | 5.2/7.4 | 65 000 | 4.4/5.9 | 62 000 | 3.6/4.5 | 60 000 | | 04.16—04.30 | 21.4 | 54.2 | 5.4/7.4 | 73 000 | 4.6/5.9 | 70 000 | 3.9/4.7 | 68 000 | | 05.01—05.15 | 24.3 | 56.9 | 5.9/7.8 | 83 000 | 5.1/6.4 | 80 000 | 4.3/5.1 | 78 000 | | 05.16—05.31 | 25.4 | 66.6 | 6.3/8.2 | 90 000 | 5.4/6.7 | 88 000 | 4.7/5.5 | 87 000 | | 06.01—06.15 | 25.1 | 62.2 | 6.0/7.7 | 93 000 | 5.2/6.4 | 92 000 | 4.5/5.2 | 92 000 | | 06.16—06.30 | 28.7 | 63.1 | 6.9/8.8 | 94 000 | 6.0/7.3 | 93 000 | 5.3/6.1 | 93 000 | | 07.01—07.15 | 30.9 | 60.5 | 7.3/9.2 | 97 000 | 6.4/7.7 | 97 000 | 5.6/6.4 | 97 000 | | 07.16—07.31 | 31.4 | 59.4 | 7.4/9.2 | 100 000 | 6.5/7.8 | 100 000 | 5.7/6.5 | 100 000 | | 08.01—08.15 | 31.4 | 60.1 | 7.4/9.3 | 100 000 | 6.5/7.8 | 100 000 | 5.7/6.5 | 100 000 | | 08.16—08.31 | 30.9 | 59.5 | 9.0/7.2 | 100 000 | 6.4/7.6 | 100 000 | 5.6/6.4 | 100 000 | | 09.01—09.15 | 28.2 | 61.5 | 6.7/8.6 | 95 000 | 5.9/7.1 | 95 000 | 5.1/5.9 | 95 000 | | 09.16—09.30 | 26.5 | 61.9 | 6.4/8.2 | 92 000 | 5.5/6.7 | 92 000 | 4.8/5.5 | 91 000 | | 10.01—10.15 | 21.1 | 54.5 | 5.2/7.0 | 83 000 | 4.5/5.6 | 83 000 | 3.8/4.5 | 81 000 | | 10.16—10.31 | 19.1 | 58.0 | 5.1/6.9 | 70 000 | 4.3/5.6 | 70 000 | 3.6/4.3 | 69 000 | | 11.01—11.15 | 17.0 | 69.9 | 5.1/7.4 | 63 000 | 4.3/5.8 | 60 000 | 3.5/4.4 | 58 000 | | 11.16—11.30 | 14.4 | 71.1 | 5.0/7.6 | 53 000 | 4.0/5.7 | 53 000 | 3.3/4.2 | 51 000 | | 12.01—12.15 | 11.4 | 70.3 | 4.6/7.2 | 50 000 | 3.8/5.7 | 45 000 | 3.0/4.0 | 45 000 | | 12.16—12.31 | 10.3 | 62.0 | 4.6/7.4 | 45 000 | 3.7/5.5 | 43 000 | 2.8/3.8 | 43 000 |
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