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7 宁海1 000 MW机组循环水泵工频运行与变频优化煤耗率对比
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Tab. 7 Comparison of coal consumption rate of Ninghai 1 000 MW unit with constant frequency operation and frequency conversion optimization of circulating water pump
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| 日期 | 环境温度/℃ | 环境湿度/% | 煤耗率/[g/(kW∙h)] |
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| 100%负荷 | 75%负荷 | 50%负荷 |
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| 变频优化 | 工频运行 | 变频优化 | 工频运行 | 变频优化 | 工频运行 |
|---|
| 01.01—01.15 | 7.8 | 55.5 | 294.2 | 301.2* | 289.0 | 298.3* | 295.9 | 303.4* | | 01.16—01.31 | 7.0 | 67.5 | 293.9 | 301.5* | 289.0 | 298.5* | 295.9 | 303.4* | | 02.01—02.14 | 5.5 | 49.3 | 294.5 | 308.5* | 289.7 | 308.5* | 296.1 | 311.4* | | 02.15—02.28 | 9.8 | 68.6 | 293.7 | 296.9 | 288.8 | 292.8 | 296.0 | 298.6 | | 03.01—03.15 | 14.5 | 59.3 | 293.4 | 293.8 | 288.9 | 292.2 | 297.0 | 299.1 | | 03.16—03.31 | 14.9 | 62.6 | 293.4 | 296.2 | 289.0 | 291.6 | 297.3 | 299.0 | | 04.01—04.15 | 19.2 | 56.0 | 293.5 | 294.1 | 289.7 | 290.2 | 299.5 | 300.1 | | 04.16—04.30 | 21.4 | 54.2 | 293.8 | 293.9 | 290.4 | 290.5 | 301.2 | 301.5 | | 05.01—05.15 | 24.3 | 56.9 | 294.8 | 295.0 | 292.0 | 292.5 | 304.4 | 305.6 | | 05.16—05.31 | 25.4 | 66.6 | 295.7 | 295.8 | 293.6 | 293.9 | 307.1 | 307.9 | | 06.01—06.15 | 25.1 | 62.2 | 295.3 | 295.4 | 293.1 | 293.3 | 306.5 | 307.0 | | 06.16—06.30 | 28.7 | 63.1 | 297.6 | 297.5 | 296.2 | 296.2 | 311.0 | 311.4 | | 07.01—07.15 | 30.9 | 60.5 | 298.9 | 298.8 | 298.0 | 298.0 | 313.5 | 313.6 | | 07.16—07.31 | 31.4 | 59.4 | 299.1 | 299.0 | 298.4 | 298.3 | 314.2 | 314.1 | | 08.01—08.15 | 31.4 | 60.1 | 299.2 | 299.2 | 298.5 | 298.4 | 314.3 | 314.2 | | 08.16—08.31 | 30.9 | 59.5 | 298.7 | 298.6 | 297.9 | 297.8 | 313.5 | 313.4 | | 09.01—09.15 | 28.2 | 61.5 | 297.1 | 297.2 | 295.5 | 295.4 | 310.0 | 309.6 | | 09.16—09.30 | 26.5 | 61.9 | 296.0 | 296.1 | 294.0 | 294.0 | 307.9 | 307.5 | | 10.01—10.15 | 21.1 | 54.5 | 293.9 | 293.9 | 290.4 | 290.5 | 301.2 | 301.3 | | 10.16—10.31 | 19.1 | 58.0 | 293.6 | 294.1 | 289.7 | 290.2 | 299.7 | 300.1 | | 11.01—11.15 | 17.0 | 69.9 | 293.5 | 294.4 | 289.5 | 290.3 | 298.9 | 299.6 | | 11.16—11.30 | 14.4 | 71.1 | 293.4 | 296.0 | 289.0 | 291.5 | 297.5 | 299.0 | | 12.01—12.15 | 11.4 | 70.3 | 293.5 | 300.8* | 288.8 | 295.5* | 296.4 | 300.5* | | 12.16—12.31 | 10.3 | 62.0 | 293.5 | 304.1* | 288.8 | 299.7* | 296.0 | 303.0* |
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