【《某水电站装机容量选择分析案例》2100字】

-某水电站装机容量选择分析案例目录TOC\o"1-3"\h\u14180某水电站装机容量选择分析案例 1180541.1电力负荷图 1123531.2确定最大工作容量N"水工 6277431.3确定各种备用容量 7204831.4确定重复容量 844261.5确定装机容量 9113431.6电力电能平衡图 91.1电力负荷图（1）根据电力系统负荷资料，每个季度的典型日负荷图采取同样的百分比，按比例得到各个月的24小时的负荷变化情况，具体数据见表2-8。表2-8各月典型日最大负荷变化列表单位：万kW时序1月2月3月4月5月6月7月8月9月10月11月12月139.8939.0738.537.6836.8636.0336.8537.6738.539.3240.1440.7238.8138.0237.436.635.8134.9635.7536.5437.438.238.9939.6337.7336.9636.335.5334.7633.8834.6535.4236.337.0737.8438.5436.6535.935.234.4533.732.833.5534.335.235.9536.737.4538.8138.0236.335.5334.7633.8834.6535.4236.337.0737.8439.6639.8939.0738.537.6836.8636.0336.8537.6738.539.3240.1440.7743.1241.2440.739.8338.9738.1839.0539.9240.741.5741.4344847.4346.4642.941.9941.0740.3341.2541.1742.943.8144.7348.4951.7450.6947.346.2945.2944.145.146.147.348.3149.3152.81049.5948.5846.245.2244.2343.024444.9846.247.1848.1750.61147.4346.464443.0641.1341.4141.3543.294444.9445.8748.41245.2844.3542.941.9941.0740.3341.2541.1742.943.8144.7346.21343.1241.2441.840.9140.0239.2640.1541.0441.842.6943.58441444.243.34443.0641.1341.4141.3543.294444.9445.8745.11545.2844.3545.144.1443.1841.4843.4544.4245.146.0647.0246.21646.3545.4146.245.2244.2343.024444.9846.247.1848.1747.31748.5147.5247.346.2945.2944.145.146.147.348.3149.3149.51850.6749.6349.548.4547.3946.2547.348.3549.550.5551.6151.71953.952.851.750.649.548.449.550.651.752.853.9552052.8251.7450.649.5248.4547.3248.449.4850.651.6852.7553.92150.6749.6348.447.3746.3445.1746.247.2348.449.4350.4651.72248.5147.5247.346.2945.2944.145.146.147.348.3149.3149.52344.243.34443.0641.1341.4141.3543.294444.9445.8745.12442.0441.1840.739.8338.9737.6438.539.3640.741.5741.4342.9Nmax53.952.851.750.649.548.449.550.651.752.853.955N45.2844.3543.4542.5241.640.6541.5742.543.4544.3845.346.2（2）日电能累积曲线根据表2-8的数据，进行日累积电能的计算，从而在日负荷图中进行日电能累积曲线图的绘制。图2-21月典型日负荷图与日电能累积曲线图2-32月典型日负荷图与日电能累积曲线图2-43月典型日负荷图与日电能累积曲线图2-54月典型日负荷图与日电能累积曲线图2-65月典型日负荷图与日电能累积曲线图2-76月典型日负荷图与日电能累积曲线图2-87月典型日负荷图与日电能累积曲线图2-98月典型日负荷图与日电能累积曲线图2-109月典型日负荷图与日电能累积曲线图2-1110月典型日负荷图与日电能累积曲线图2-1211月典型日负荷图与日电能累积曲线图2-1312月典型日负荷图与日电能累积曲线1.2确定最大工作容量N"水工由于白莲崖电站属于年调节电站，在确定最大工作容量时，应该以其在设计枯水年供水期所提供的保证电能为控制条件，让水电站在整个供水期承担系统的峰荷。先假定三个水电站最大工作容量方案N水工1"=6万kW、N水工2"=6.2万kW、N水工3"=6.5万kW，在各月的典型日电能累积曲线上分别定出相应的日电能量E水日i，以及各月月电能E水电站各个最大工作容量N水工"方案与其相应的供水期保证电能E保供图2-14最大工作容量的确定 表2-9设计枯水年供水期各月最大工作容量N6.1供水期8910111212最大负荷50.651.752.853.95553.952.8水平线48.948.948.948.948.948.948.9N1.72.83.956.153.9E1.285.18.8614.3523.515.999.99E69.312155.04269.344436.24714.4486.096303.6961.3确定各种备用容量（1）负荷备用容量N取系统最大负荷的5%左右，得N系备=2.8万kW，此容量全部由白莲崖水电站承担，即N水负（2）事故备用容量N取系统最大负荷的10%左右，得N系事由于系统最大工作容量N系工"=55万kW，前面定出N水工"=6.1万kW，可得（3）检修备用容量N暂不考虑水电站的检修备用容量，即N水备=0万kW。由于火电站机组平均每台检修时间较长，且火电站机组较多，所以设置3万kW的检修备用容量，即（4）必须容量N必须容量是最大工作容量和备用容量的总和，即N系必=66.3万kW，N水必（5）事故备用库容V事备在水电站中，考虑到事故备用容量的使用时间较长，通过式（2-8）来计算相应的事故备用库容 V事备= N必=A Hmin=式中T取连续工作10d（240h）；由V死+1QT和由式（2-9）试算可得Z下带入式（2-8）计算可得V事备1.4确定重复容量由表2-5～2-7知，三个设计代表年所有月份的N均小于N水必1.5确定装机容量装机容量是必须容量和重复容量的总和，在一定范围内进行取整，故取N系装=67万kW，N水装取水电站机组为2台×5万kW。取火电站机组为8台×5.5万kW；2台×4万kW；1台×3万kW；1台×2万kW。1.6电力电能平衡图根据已经求出的电力系统、水电站及火电站装机容量等其它容量，可得电力系统的容量平衡及电能平衡表如下：表2-10水电站容量平衡表单位：万kW月份123456789101112电力系统装机容量676767676767676767676767工作容量53.952.851.750.649.548.449.550.651.752.853.955负荷备用容量2.82.82.82.82.82.82.82.82.82.82.82.8事故备用容量5.55.55.55.55.55.55.55.55.55.55.55.5受阻容量000000000000检修容量45.55.55.55.55.55.575.55.543空闲容量0.80.41.52.63.74.83.71.11.50.40.81水电站装机容量101010101010101010101010工作容量53.94.95.15.25.45.61.72.83.956.1负荷备用容量2.82.82.82.82.82.82.82.82.82.82.82.8事故备用容量1.23.31.31.121.81.60.54.43.31.21.1受阻容量000000000000检修容量000000050000空闲容量0.00.00.00.00.00.00.00.00.00.00.00.0火电站装机容量575757575757575757575757工作容量48.948.946.845.544.34343.948.948.948.948.948.9负荷备用容量000000000000事故备用容量3.31.23.23.43.53.73.951.11.23.34.4检修容量45.55.55.55.55.55.525.55.543空闲容量0.80.41.52.63.74.83.71.11.50.40.80.7表2-11电能平衡表单位：万kW·h月份123456789101112电力系统33054.432375.53171