-某水電站裝機(jī)容量選擇分析案例目錄TOC\o"1-3"\h\u14180某水電站裝機(jī)容量選擇分析案例 1180541.1電力負(fù)荷圖 1123531.2確定最大工作容量N"水工 6277431.3確定各種備用容量 7204831.4確定重復(fù)容量 844261.5確定裝機(jī)容量 9113431.6電力電能平衡圖 91.1電力負(fù)荷圖（1）根據(jù)電力系統(tǒng)負(fù)荷資料，每個(gè)季度的典型日負(fù)荷圖采取同樣的百分比，按比例得到各個(gè)月的24小時(shí)的負(fù)荷變化情況，具體數(shù)據(jù)見表2-8。表2-8各月典型日最大負(fù)荷變化列表單位：萬(wàn)kW時(shí)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）日電能累積曲線根據(jù)表2-8的數(shù)據(jù)，進(jìn)行日累積電能的計(jì)算，從而在日負(fù)荷圖中進(jìn)行日電能累積曲線圖的繪制。圖2-21月典型日負(fù)荷圖與日電能累積曲線圖2-32月典型日負(fù)荷圖與日電能累積曲線圖2-43月典型日負(fù)荷圖與日電能累積曲線圖2-54月典型日負(fù)荷圖與日電能累積曲線圖2-65月典型日負(fù)荷圖與日電能累積曲線圖2-76月典型日負(fù)荷圖與日電能累積曲線圖2-87月典型日負(fù)荷圖與日電能累積曲線圖2-98月典型日負(fù)荷圖與日電能累積曲線圖2-109月典型日負(fù)荷圖與日電能累積曲線圖2-1110月典型日負(fù)荷圖與日電能累積曲線圖2-1211月典型日負(fù)荷圖與日電能累積曲線圖2-1312月典型日負(fù)荷圖與日電能累積曲線1.2確定最大工作容量N"水工由于白蓮崖電站屬于年調(diào)節(jié)電站，在確定最大工作容量時(shí)，應(yīng)該以其在設(shè)計(jì)枯水年供水期所提供的保證電能為控制條件，讓水電站在整個(gè)供水期承擔(dān)系統(tǒng)的峰荷。先假定三個(gè)水電站最大工作容量方案N水工1"=6萬(wàn)kW、N水工2"=6.2萬(wàn)kW、N水工3"=6.5萬(wàn)kW，在各月的典型日電能累積曲線上分別定出相應(yīng)的日電能量E水日i，以及各月月電能E水電站各個(gè)最大工作容量N水工"方案與其相應(yīng)的供水期保證電能E保供圖2-14最大工作容量的確定 表2-9設(shè)計(jì)枯水年供水期各月最大工作容量N6.1供水期8910111212最大負(fù)荷50.651.752.853.95553.952.8水平線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確定各種備用容量（1）負(fù)荷備用容量N取系統(tǒng)最大負(fù)荷的5%左右，得N系備=2.8萬(wàn)kW，此容量全部由白蓮崖水電站承擔(dān)，即N水負(fù)（2）事故備用容量N取系統(tǒng)最大負(fù)荷的10%左右，得N系事由于系統(tǒng)最大工作容量N系工"=55萬(wàn)kW，前面定出N水工"=6.1萬(wàn)kW，可得（3）檢修備用容量N暫不考慮水電站的檢修備用容量，即N水備=0萬(wàn)kW。由于火電站機(jī)組平均每臺(tái)檢修時(shí)間較長(zhǎng)，且火電站機(jī)組較多，所以設(shè)置3萬(wàn)kW的檢修備用容量，即（4）必須容量N必須容量是最大工作容量和備用容量的總和，即N系必=66.3萬(wàn)kW，N水必（5）事故備用庫(kù)容V事備在水電站中，考慮到事故備用容量的使用時(shí)間較長(zhǎng)，通過(guò)式（2-8）來(lái)計(jì)算相應(yīng)的事故備用庫(kù)容 V事備= N必=A Hmin=式中T取連續(xù)工作10d（240h）；由V死+1QT和由式（2-9）試算可得Z下帶入式（2-8）計(jì)算可得V事備1.4確定重復(fù)容量由表2-5～2-7知，三個(gè)設(shè)計(jì)代表年所有月份的N均小于N水必1.5確定裝機(jī)容量裝機(jī)容量是必須容量和重復(fù)容量的總和，在一定范圍內(nèi)進(jìn)行取整，故取N系裝=67萬(wàn)kW，N水裝取水電站機(jī)組為2臺(tái)×5萬(wàn)kW。取火電站機(jī)組為8臺(tái)×5.5萬(wàn)kW；2臺(tái)×4萬(wàn)kW；1臺(tái)×3萬(wàn)kW；1臺(tái)×2萬(wàn)kW。1.6電力電能平衡圖根據(jù)已經(jīng)求出的電力系統(tǒng)、水電站及火電站裝機(jī)容量等其它容量，可得電力系統(tǒng)的容量平衡及電能平衡表如下：表2-10水電站容量平衡表單位：萬(wàn)kW月份123456789101112電力系統(tǒng)裝機(jī)容量676767676767676767676767工作容量53.952.851.750.649.548.449.550.651.752.853.955負(fù)荷備用容量2.82.82.82.82.82.82.82.82.82.82.82.8事故備用容量5.55.55.55.55.55.55.55.55.55.55.55.5受阻容量000000000000檢修容量45.55.55.55.55.55.575.55.543空閑容量0.80.41.52.63.74.83.71.11.50.40.81水電站裝機(jī)容量101010101010101010101010工作容量53.94.95.15.25.45.61.72.83.956.1負(fù)荷備用容量2.82.82.82.82.82.82.82.82.82.82.82.8事故備用容量1.23.31.31.121.81.60.54.43.31.21.1受阻容量000000000000檢修容量000000050000空閑容量0.00.00.00.00.00.00.00.00.00.00.00.0火電站裝機(jī)容量575757575757575757575757工作容量48.948.946.845.544.34343.948.948.948.948.948.9負(fù)荷備用容量000000000000事故備用容量3.31.23.23.43.53.73.951.11.23.34.4檢修容量45.55.55.55.55.55.525.55.543空閑容量0.80.41.52.63.74.83.71.11.50.40.80.7表2-11電能平衡表單位：萬(wàn)kW·h月份123456789101112電力系統(tǒng)33054.432375.53171