【《某水电站的水能指标分析计算案例》1200字】

-某水电站的水能指标分析计算案例1.1确定调节流量年调节水电站可根据三个设计代表年进行完全年调节的情况，以确定完全年调节所需的调节流量。当不计入水量损失时 Q调= Q调'式中Q调和Q调'W设供和W天蓄分别是供水期和蓄水期的来水总量，mT供和T三个设计代表年的年径流过程见表2-3，分别根据式（2-3）和式（2-4）求出蓄水期和供水期以及相应的调节流量，计算结果见下表。表2-4设计枯、平、丰水年各时段调节流量汇总表设计枯水年设计平水年设计丰水年供水期8月～次年2月10月～次年2月10月～次年2月Q调（m³8.82613.2614.48蓄水期4月～7月3～7月7～8月Q调'（m13.85522.9482.96不供不蓄期3月8～9月3～6、9月1.2计算保证出力和多年平均年发电量保证出力N保的计算采用设计枯水年法，取该供水期的平均出力作为年调节水电站的保证出力。月平均出力 N=AQ（Z式中A=9.81η，取A=8.0，则η=0.815。多年平均年发电量E年采用三个代表年法进行估算 E年三个设计代表年的出力及发电量计算分别见表2-5～2-7。表2-5设计枯水年电站出力及发电量计算时段/月三四五六七八九十十一十二一二Q天m³/s21.717.413.747.987.212118.69.43.72.73.311Q调21.717.413.747.982.9682.9618.614.4814.4814.4814.4814.48ΔQ00004.2438.040-5.08-10.78-11.78-11.18-3.48ΔW亿m³00000.11210-0.134-0.284-0.31-0.294-0.092V初1.0351.0351.0351.0351.0351.1461.1461.1472.0131.731.421.126V末1.0351.0351.0351.0351.1461.1461.1462.0131.731.421.1261.035Z初m209.6209.6209.6209.6209.6209.6210210210209.8209.7209.6Z末209.6209.6209.6209.6209.6210210210209.8209.7209.6209.6Z上209.6209.6209.6209.6209.6209.8210210209.9209.8209.7209.6Z下133.7133.6133.5134.1134.4134.4133.7133.5133.5133.5133.5133.5H75.8675.9776.0875.5275.2475.4576.3476.4476.3676.2576.1476.07N万kW1.3171.0570.8342.8944.9945.0081.1360.8850.8850.8830.8820.881E水万kW·h961.4771.9608.7211236453655829.3646.4645.8644.8643.9643.3表2-6设计平水年电站出力及发电量计算时段/月三四五六七八九十十一十二一二Q天m³/s25.230.132.639.729.411.131.26.12.81.12.910.1Q调22.9422.9422.9422.9422.9411.131.213.2613.2613.2613.2613.26ΔQ1.267.169.6616.766.4600-7.16-10.5-11.2-10.4-3.16ΔW亿m³0.0590.1880.2540.4410.1700-0.19-0.28-0.29-0.27-0.08V初1.0351.0941.2821.5361.9771.1471.1471.1471.9591.6841.391.118V末1.0941.2821.5361.9771.1471.1471.1471.9591.6841.391.1181.035Z初m190191.3195.5200.9207.6210210210207.3203.2198191.9Z末191.3195.5200.9207.6210210210207.3203.2198191.9190Z上190.7193.4198.2204.2208.8210210208.7205.3200.6194.9190.9Z下133.7133.7133.7133.7133.7133.5133.9133.5133.5133.5133.5133.5H56.9259.6964.4770.575.0676.5476.1475.1771.867.161.457.42N万kW1.0451.0951.1831.2941.3780.7411.9610.7970.7620.7120.6510.609E水万kW·h762.5799.7863.7944.51006540.81432581.1556519.6475.5444.7表2-7设计丰水年电站出力及发电量计算时段/月三四五六七八九十十一十二一二Q天m³/s21.717.413.747.987.212118.69.43.72.73.311Q调21.717.413.747.982.9682.9618.614.4814.4814.4814.4814.48ΔQ00004.2438.040-5.08-10.8-11.8-11.2-3.48ΔW亿m³00000.11210-0.13-0.28-0.31-0.29-0.09V初1.0351.0351.0351.0351.0351.1461.1461.1472.0131.731.421.126V末1.0351.0351.0351.0351.1461.1461.1462.0131.731.421.1261.035Z初m209.6209.6209.6209.6209.6209.6210210210209.8209.7209.6Z末209.6209.6209.6209.6209.6210210210209.8209.7209.6209.6Z上209.6209.6209.6209.6209.6209.8210210209.9209.8209.7209.6Z下133.7133.6133.5134.1134.4134.4133.7133.5133.5133.5133.5133.5H75.8675.9776.0875.5275.2475.4576.3476.4476.3676.2576.1476.07N万kW1.3171.0570.8342.8944.9945.0081.1360.8850.8850.8830.8820.881E水万kW·h961.4771.9608.7211236453655829.3646.4645.8644.8643.9643.3由表2-5数据可得，N保供=0.47万kW，E保供=2387.44万kW·h。由表2-5～2-7数据可得1.3复核水库调节性能以对设计枯水年按等流量进行完