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8 宁海1 000 MW机组循环水泵变频及冷端优化节煤率
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Tab. 8 Circulating water pump frequency conversion and cold end optimization coal saving rate of Ninghai 1 000 MW unit
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| 日期 | 环境温度/℃ | 环境湿度/% | 节煤率/[g/(kW∙h)] |
|---|
| 100%负荷 | 75%负荷 | 50%负荷 |
|---|
| 01.01—01.15 | 7.8 | 55.5 | 7.0 | 9.3 | 7.5 | | 01.16—01.31 | 7.0 | 67.5 | 7.6 | 9.5 | 7.5 | | 02.01—02.14 | 5.5 | 49.3 | 14.0 | 18.8 | 15.3 | | 02.15—02.28 | 9.8 | 68.6 | 3.2 | 4.0 | 2.6 | | 03.01—03.15 | 14.5 | 59.3 | 0.4 | 3.3 | 2.1 | | 03.16—03.31 | 14.9 | 62.6 | 2.8 | 2.6 | 1.7 | | 04.01—04.15 | 19.2 | 56.0 | 0.6 | 0.5 | 0.6 | | 04.16—04.30 | 21.4 | 54.2 | 0.1 | 0.1 | 0.3 | | 05.01—05.15 | 24.3 | 56.9 | 0.2 | 0.5 | 1.2 | | 05.16—05.31 | 25.4 | 66.6 | 0.1 | 0.3 | 0.8 | | 06.01—06.15 | 25.1 | 62.2 | 0.1 | 0.2 | 0.5 | | 06.16—06.30 | 28.7 | 63.1 | -0.1 | 0 | 0.4 | | 07.01—07.15 | 30.9 | 60.5 | -0.1 | 0 | 0.1 | | 07.16—07.31 | 31.4 | 59.4 | -0.1 | -0.1 | -0.1 | | 08.01—08.15 | 31.4 | 60.1 | 0 | -0.1 | -0.1 | | 08.16—08.31 | 30.9 | 59.5 | -0.1 | -0.1 | -0.1 | | 09.01—09.15 | 28.2 | 61.5 | 0.1 | -0.1 | -0.4 | | 09.16—09.30 | 26.5 | 61.9 | 0.1 | 0 | -0.4 | | 10.01—10.15 | 21.1 | 54.5 | 0 | 0.1 | 0.1 | | 10.16—10.31 | 19.1 | 58.0 | 0.5 | 0.5 | 0.4 | | 11.01—11.15 | 17.0 | 69.9 | 0.9 | 0.8 | 0.7 | | 11.16—11.30 | 14.4 | 71.1 | 2.6 | 2.5 | 1.5 | | 12.01—12.15 | 11.4 | 70.3 | 7.3 | 6.7 | 4.1 | | 12.16—12.31 | 10.3 | 62.0 | 10.6 | 10.9 | 7.0 |
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