湖南鎮(zhèn)水電站水能規(guī)劃及調(diào)度圖繪制計(jì)算書

目 錄第一章 緒 論4第二章 水能規(guī)劃42.1 徑流調(diào)節(jié)42.1.1 水量差積曲線42.1.1.1水庫調(diào)節(jié)性能的判斷42.1.1.2 水庫設(shè)計(jì)保證率52.1.1.3 水量差積曲線52.1.1.4正常蓄水位的確定62.2 死水位的選擇182.2.1 死水位選擇的步驟182.2.3 死水位的確定202.3 裝機(jī)容量的選擇202.3.1最大工作容量的確定202.3.1.1 典型日負(fù)荷圖及日電能累積曲線的繪制292.3.1.2 最大工作容量的確定312.3.2 備用容量的確定382.3.2.1 負(fù)荷備用容量382.3.2.2 事故備用容量392.3.2.3 檢修容量的確定392.3.3 重復(fù)容量的確定392.3.4 裝機(jī)容量的確定392.4 電力電能平衡圖402.4.1受阻容量的確定402.4.1.1 出力限制線的繪制402.4.1.2 受阻容量412.4.2電力電能平衡412.5 水庫防洪設(shè)計(jì)442.5.1 水庫上游水位與下泄流量關(guān)系曲線442.5.2 水庫100年一遇的洪水調(diào)洪演算452.5.3 水庫千年一遇的設(shè)計(jì)洪水調(diào)洪演算.462.5.4 水庫萬年一遇的校核洪水512.5.5防洪設(shè)計(jì)成果542.6 水庫調(diào)度圖的繪制54第三章 樞紐布置及擋水、泄水建筑物設(shè)計(jì)643.1 樞紐布置643.1.1 壩軸線選擇643.1.2 壩型643.1.3 樞紐布置643.2 擋水建筑物設(shè)計(jì)643.2.1 壩頂高程確定643.2.2基本剖面設(shè)計(jì)663.2.2.1 按應(yīng)力條件確定的壩底最小寬度663.2.2.2 按穩(wěn)定條件確定得壩底最小寬度663.2.3廊道及排水布置663.2.3.1 基礎(chǔ)帷幕灌漿廊道663.2.3.2 基礎(chǔ)排水廊道663.2.3.3 縱向排水廊道673.2.4 非溢流壩穩(wěn)定和應(yīng)力分析683.3 泄水建筑物設(shè)計(jì)803.3.1 溢流壩剖面設(shè)計(jì)803.3.1.1 堰頂高程803.3.1.2 堰上曲線及上游曲線813.3.2 溢流壩穩(wěn)定和應(yīng)力分析823.3.3 挑距及沖刷坑估算94第四章 水電站廠房設(shè)計(jì)954.1 特征水頭選擇954.1.1 最大水頭Hmax的選擇954.1.2最小水頭Hmin的選擇964.1.3 加權(quán)平均水頭Hav的選擇964.1.4 設(shè)計(jì)水頭Hr的選擇964.2 水輪機(jī)選型設(shè)計(jì)964.3蝸殼設(shè)計(jì)1024.4 尾水管設(shè)計(jì)1024.5 水輪發(fā)電機(jī)外形尺寸設(shè)計(jì)1034.5.1 基本尺寸的計(jì)算1034.5.2 軸向尺寸計(jì)算1044.5.3 發(fā)電機(jī)重量估算1054.6 調(diào)速器與油壓裝置的選擇1054.6.1 調(diào)速功的計(jì)算1054.6.2 接力器的選擇1064.6.3 調(diào)速器的選擇1074.6.4 油壓裝置的選擇1074.7 廠房起重設(shè)備1074.8 廠房布置1074.8.1.水輪機(jī)的安裝高程1074.8.2 主廠房開挖高程1084.8.3 水輪機(jī)層地面高程1084.8.4 發(fā)電機(jī)定子安裝高程31084.8.5發(fā)電機(jī)層樓板高層1094.8.6 裝配場層高程51094.8.7 吊車軌道頂部高程61094.8.8 主廠房頂高程71094.9. 廠房寬度的確定1094.9.1 主廠房寬度的確定1094.9.2 裝配場寬度的確定1104.9.3 主廠房長度1104.9.3.1 機(jī)組段長度1104.9.3.2 端機(jī)組長1104.9.3.3 裝配場長度1114.9.3.4 廠房總長度L1114.10 副廠房以及其他的相關(guān)的尺寸見水輪機(jī)層發(fā)電機(jī)層的剖面圖。1114.11 油系統(tǒng)的布置1114.12 供水系統(tǒng)1114.13 排水系統(tǒng)1114.14 廠區(qū)布置111115第一章 緒 論詳見說明書。第二章 水能規(guī)劃2.1 徑流調(diào)節(jié)2.1.1 水量差積曲線2.1.1.1 水庫調(diào)節(jié)性能的判斷通常用庫容系數(shù)（）反映水庫興利調(diào)節(jié)能力。當(dāng)2%時，水庫為日調(diào)節(jié)水庫；當(dāng)2%30%事，水庫為多年調(diào)節(jié)水庫。由湖南鎮(zhèn)水電站多年壩址處的平均流量算出多年平均流量為84.08立方/秒則多年平均水量為 正常蓄水位有以下三個方案:227m、230m、233m, 對應(yīng)的庫容分別為：1464.24106 m3、1584.24106 m3、1715.99106 m3。流量為0時，對應(yīng)的水庫壩址處水位為122.60m，三個方案所能集中的最大水頭分別為104.4m，107.4m，110.4m，壩式年調(diào)節(jié)水電站的h消=（25%-30%），對應(yīng)的消落深度為33m，36m，38m,由此得到對應(yīng)的死水位為194m，194m，195m。查出對應(yīng)的庫容為526.82106 m3，526.82106 m3，544.87106 m3，求出興利庫容為937.42106 m3，1057.42106 m3，1171.12106 m3，則庫容系數(shù)分別為：=（937.42106）/（2650106）=35.4%=（1057.42106）/（2650106）=39.9%=（1171.12106）/（2650106）=44.2%庫容系數(shù)1、2、3都大于30%，因此判定湖南鎮(zhèn)水庫為多年調(diào)節(jié)水庫。2.1.1.2 水庫設(shè)計(jì)保證率水電站的設(shè)計(jì)保證率直接關(guān)系到水庫的供電可靠性、水能資源利用程度及電站造價。本水電站位于華東電網(wǎng)，為多年調(diào)節(jié)水電站，根據(jù)水電站在電力系統(tǒng)所占比重，及灌溉、供水和通航等設(shè)計(jì)要求，擬定本水庫的設(shè)計(jì)保證率為90%2.1.1.3 水量差積曲線本水庫是多年調(diào)節(jié)水庫，具有長系列的水文資料，首先求出多年水量的平均值，取一整數(shù)，作為多年水量定值。水量差積值計(jì)算公式見式（2-2）： （2-2）近似表示為： （2-3）式中 Q在式（2-2）式（2-3）中分別為瞬時流量和時段時段平均流量，m3/s；Q定多年流量定值，m3/s ；W差積水量差積值，（m3/s）月 為避免出現(xiàn)不必要的錯誤，選年差積點(diǎn)作為控制點(diǎn)，則控制點(diǎn)的水量差積值為： （2-4）根據(jù)已算出的多年平均流量及所給的水文資料可繪出長系列的水量差積曲線，簡圖見圖2-1，具體曲線詳圖見附圖。2.1.1.4 正常蓄水位的確定 三個正常蓄水位水位對應(yīng)三個興利庫容，根據(jù)各自的興利庫容在水量差積曲線圖上繪出三條滿庫曲線。本水庫是多年調(diào)節(jié)水庫，具有長系列的水文資料，因此采用圖解法求各正常蓄水位下的調(diào)節(jié)流量。找出水量差積曲線和滿庫線之間的控制點(diǎn)，用繃線法將各控制點(diǎn)連接，確定水庫的供水期、蓄水期及不蓄不供期，在流量比尺上讀出各時段的調(diào)節(jié)流量各時段調(diào)節(jié)流量如下表所示：正常蓄水為227m經(jīng)過作圖和計(jì)算校核，得到了如下的各不同時期的時段劃分，及各時段的出力正常蓄水位為227m供水期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1951,6-1952,180.456213.51123.3690.1561651.421473.1486613941952,7-1953,4102.532213.51123.519078436.9895.1504858551954,7-1955,272.577213.51123.3190.255644.785972.8418905051955,6-1956,258.293213.51123.2190.344742.7921582.6115472921957,6-1958,267.711213.51123.2790.2451937.0454483.0314614681958,5-1959,174.443213.51123.3290.1957069.1204583.3310104221959,9-1961,168.627213.51123.2890.2352633.82078166.1442617031961,6-1962,264.499213.51123.2590.2649484.2777982.8882983261962,8-1964,269.152213.51123.2890.2353036.47216186.9651738161964,6-1965,362.131213.51123.2390.2847678.0867893.130733891966,7-1967,267.28213.51123.2790.2451606.451272.6356446761967,6-1968,254.075213.51123.1890.3341519.0553782.4233842241968,7-1969,176.558213.51123.3490.1758677.4963162.5686660781969,7-1970,273.974213.51123.3290.1956709.5780172.8962715681970,7-1972.161.824213.51123.2390.2847442.50112186.2305287871973,7-1974,465.229213.51123.2690.2550038.7966393.2857475421975,6-1976,295.411213.51123.4790.0473021.8547484.2621396171976,7-1977,375.899213.51123.3390.1858178.8604783.3957837281977,6-1978,279.411213.51123.3690.1560850.6640383.551731558備注：供水期總電能為70.49億kWh蓄水期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1950.1-1951.693.106213.51123.4590.0671273.57406178.8402039381952.2-1952.7154.142213.51123.7989.72117551.77254.2882886441954.4-1954.7225.237213.51124.1589.36171081.015733.7446212721955.4-1955.6116.855213.51123.5989.9289314.613621.3032788421956.2-1957.676.896213.51123.3490.1758936.55472166.8800176521958.2-1958.5100.237213.51123.590.0176689.8251531.6785868931959.1-1959.686.762213.51123.4190.166446.677752.4239748021961.1-1961.671.442213.51123.390.2154780.6539751.9983982571962.3-1962.7138.428213.51123.7189.8105662.092443.0836425051964.4-1964.685.355213.51123.490.1165376.3819320.9539721651965.3-1966.775.857213.51123.3390.1858146.66621166.7878092271967.4-1967.6110.855213.51123.5689.9584756.9616321.2367735841968.3-1968.781.778213.51123.3790.1462657.4858241.8285960661969.1-1969.795.318213.51123.4790.0472950.6781263.1934888851970.2-1970.7118.942213.51123.689.9190899.6393753.3160188441973.3-1973.6167.903213.51123.8789.64127932.011832.8001758751975.3-1975.6189.903213.51123.9989.52144500.990833.1628376861976.2-1976.7134.342213.51123.6989.82102566.086753.7416108441977.3-1977.6135.237213.51123.6989.82103249.392432.2599227011978.2-1978.796.724213.51123.4890.0374018.5246252.700195778備注：蓄水期總電能為66.22億kWh不蓄不供期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1952.1-1952.2124213.51123.6389.8894733.5210.6911757621953.4-1954.3106.427213.51123.5389.9881398.56241116.5327230251954.3-1954.4213213.51124.189.41161876.80511.1810531691955.2-1955.496.85213.51123.4890.0374114.9467521.0814853031959.6-1959.971.033213.51123.390.2154467.0389131.1921745481962.2-1962.3120213.51123.6189.99169810.6690286081962.7-1962.898.4213.51123.4990.0275292.72810.5493357431964.2-1964.476.3213.51123.3390.1858486.23920.8534311991967.2-1967.393.5213.51123.4590.0671575.18510.522212551967.3-1967.4105213.51123.5389.9880307.1510.5859209661968.2-1968.356.4213.51123.1990.3243299.40810.3159124811972.1-1973.264.015213.51123.2590.2649112.94815134.6582649061973.2-1973.397213.51123.4890.0374229.73510.5415801471973.6-1973.792213.51123.4490.0770434.7410.5138918631974.4-1975.167.313213.51123.2790.2451631.7635293.390348121975.1-1975.298213.51123.4990.0274986.6610.5471026711975.2-1975.3116213.51123.5989.9288661.1210.646871532備注：不蓄不供期的總電能為24.47億kWh總電能為161.188349502061億KW.H，年平均電能為5.558218948 億kWh正常蓄水為230m時正常蓄水位為230m供水期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1951.6-1952.187.137215.49123.4192.0868200.3871673.48311952.7-1954.3107.137215.49123.5491.9583735.600782012.2191954.7-1955.279.259215.49123.3592.1462074.8562173.17031955.6-1956.264.139215.49123.2592.2450287.5415682.93521957.6-1958.273.558215.49123.3192.1857634.8997483.3641959.9-1962.269.586215.49123.2992.254534.54822911.5391964.6-1965.367.328215.49123.2792.2252776.3993693.46551967.6-1968.359.53215.49123.2292.2746689.0813593.06581969.7-1970.280.656215.49123.3692.1363162.1168873.22581970.7-1973.264.252215.49123.2592.2450376.138083111.3941973.7-1975.168.869215.49123.2892.2153978.48917187.08891975.6-1976.2101.258215.49123.5191.9879166.5421484.62081976.7-1977.381.745215.49123.3792.1264007.969983.7361977.6-1978.285.258215.49123.492.0966736.9783783.8953備注：供水期總電能為77.20196226億kWh蓄水期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1950.1-1951.690.355215.49123.4392.0670703.69105178.76951952.2-1952.7144.788215.49123.7491.75112916.541554.11921954.3-1954.6204.313215.49124.0691.43158782.869533.47541955.2-1955.695.16215.49123.4792.0274431.297242.17221956.2-1956.967.849215.49123.2792.2253184.7956372.71631958.2-1958.584.647215.49123.3992.166265.9039531.45041962.3-1962.7126.735215.49123.6491.8598945.1828842.88761967.2-1967.693.36215.49123.4592.0473039.262442.13161969.1-1969.787.523215.49123.4192.0868502.5016462.99881970.2-1970.7109.588215.49123.5591.9485641.9261253.12421973.3-1973.6152.313215.49123.7891.71118733.314532.59881975.3-1975.6174.313215.49123.991.59135705.285232.97031976.2-1976.7124.988215.49123.6391.8697591.8802853.56021977.3-1977.6119.647215.49123.6191.8893441.9140632.04531978.2-1978.787.388215.49123.4192.0868396.8398452.4951蓄水期總電能為47.5148942773536億kWh不蓄不供期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1952.1-1952.2124215.49123.6391.8696820.4410.70641954.6-1954.7229215.49124.1791.32177754.3811.29691956.9-1957.678.737215.49123.3592.1461666.0310394.04921958.5-1959.679.181215.49123.3592.1462013.76739135.88191959.6-1959.971.033215.49123.392.1955662.524331.21831962.2-1962.3120215.49123.6191.8893717.610.68381962.7-1962.898.4215.49123.499276948.810.56141962.8-1964.671.275215.49123.392.1955852.15913228.96491965.3-1967.273.247215.49123.3192.1857391.22191239.63071968.3-1969.178.646215.49123.3592.1461594.76074104.4941973.2-1973.397215.49123.4892.0175862.24510.55351973.6-1973.792215.49123.4492.0571983.110.52521975.1-1975.298215.49123.49927663610.55911975.2-1975.3116215.49123.5991.990613.410.6611備注：不蓄不供期的總電能為39.7864742787053億kWh總電能為166.4424415億KW.H，年平均電能為5.739394534 億kWh正常蓄水為233時正常蓄水位為233m供水期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1952.7-1954.3109.175217.78123.5594.2387444.26212012.7598671955.6-1956.269.543217.78123.2994.4955854.503683.26011571959.6-1962.271.073217.78123.394.4857077.30483213.3259531962.8-1965.371.524217.78123.394.4857439.49393112.9914351967.6-1968.364.333217.78123.2594.5351691.887293.39429611970.7-1973.265.646217.78123.2694.5252741.30933111.9288181973.7-1975.171.271217.78123.394.4857236.3147187.51673071975.6-1976.2106.661217.78123.5494.2485439.727484.9869461976.7-1977.387.149217.78123.4194.3769906.134684.0802813供水期總電能為74.24444235億kWh蓄水期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1952.2-1952.7136.142217.78123.794.08108870.03553.97157891954.3-1954.7199.678217.78124.0493.74159101.43444.64321621958.2-1959.677.504217.78123.3494.4462215.561167.26279571962.2-1962.7116.742217.78123.5994.1993465.396353.40961771967.2-1967.682.553217.78123.3894.466240.527241.93316351970.2-1970.7100.942217.78123.5194.2780884.319952.950661973.3-1973.6137.903217.78123.7194.07110266.54932.41351421975.3-1975.6159.903217.78123.8293.96127708.1332.79527551976.2-1976.7116.342217.78123.5994.1993145.150353.39793511977.3-1977.6105.237217.78123.5394.2584307.991631.8453333蓄水期的總電能為34.6230902017306億kWh不蓄不供期的劃分時間段調(diào)節(jié)流量立方米/秒上游水位（米）下游水位（米）水頭（米）保證出力(kW)月數(shù)電能(億kWh)1950.1-1952.189.417217.78123.4394.3571710.19862412.5567431952.1-1952.2124217.78123.6394.1599234.110.7240121954.7-1955.685.041217.78123.494.3868222.4414115.47526031956.2-1958.273.835217.78123.3294.4659282.85992410.3806661962.7-1962.898.4217.78123.4994.2978864.15610.57539291965.3-1967.273.247217.78123.3194.4758816.9748239.86995891968.3-1969.178.646217.78123.3594.4363125.6051104.60564421969.1-1970.283.825217.78123.3994.3967254.0549136.37891261973.2-1973.397217.78123.4894.377750.3510.56726661973.6-1973.792217.78123.4494.3473773.8810.53825421975.1-1975.298217.78123.4994.2978543.5710.57305391975.2-1975.3116217.78123.5994.1992871.3410.67758931977.6-1978.786.077217.78123.494.3869053.5517136.5495913不蓄不供期總電能為59.4723445240973億kWh總電能為168.339877079096億KW.H, 年平均電能為5.804823348億kWh水利動能經(jīng)濟(jì)計(jì)算：1） 水電站必須容量：正常蓄水位227m：N水必1=正常蓄水位230m：N水必2=正常蓄水位233m：N水必3= =式中為裝機(jī)容量年利用小時數(shù)，取為3000h2）水電站造價原值：根據(jù)已知資料，水電站單位千瓦投資K水=6500元/千瓦，水電站增加單位千瓦投資K水=4200元/千瓦，以正常蓄水位227m為基準(zhǔn)，分別計(jì)算正常蓄水位為227m、230m、233m三種方案對應(yīng)水電站造價原值K。正常蓄水位227m：K1=650185.274=120428.1萬元正常蓄水位230m：K2=650191.313=124353.55萬元正常蓄水位233m：K3=650193.494=125771.17萬元3）正常蓄水位為227m、230m、233m三種方案對應(yīng)水電站施工工期m都是4年（包括初始運(yùn)行期） 4）水電站折算造價K：（折算因子r0=0.08）按照各年投資平均分配，且投資在年初，分別計(jì)算正常蓄水位為227m、230m、233m三種方案對應(yīng)水電站折現(xiàn)至施工期末的折算造價K。K1=120428.1/4=146518.85萬元K2=124353.55/4=151294.77萬元K3=125771.17/4=153019.53萬元5）水電站本利年攤還值RP =K(A/P，r0，n1)按規(guī)范，取水電站投資收益率r0=0.08 ,經(jīng)濟(jì)壽命n1=50年。 RP1 =146518.85=11976.87萬元 RP2 = 151294.77=12367.27萬元 RP3 =153019.53=12508.25萬元6）水電站正常年運(yùn)行費(fèi)U= K1.75% U1=120428.11.75%=2107.49萬元U2=124353.551.75%=2176.19萬元U3=125771.171.75%=2201萬元7）水電站年費(fèi)用ACh ACh1= RP1+ U1 =11976.87+2107.49=14084.36萬元 ACh2= RP2 + U2 =12367.27+2176.19=14543.45萬元 ACh3= RP3+ U3=12508.25+2201=14709.25萬元8）替代電站補(bǔ)充必需容量N2=1.05N1 N21=1.05N11=1.05(193.494-185.274) =8.63MWN22=1.05N12= 1.05(193.494- 191.313)=2.29MW N23=0MW9）替代電站補(bǔ)充年電量E2=1.05E1 E11=2.466萬MWh；E12=0.654萬MWh；E13=0萬MWhE21 =1.05E11 =2.589 萬MWhE22=1.05E12 =0.687萬MWhE23 =0萬MWh10）替代電站補(bǔ)充造價原值K2=800N2 K21=800 N21=6904.92萬元 K22=800 N22 =1832萬元 K23=800 N23=0萬元11）替代電站補(bǔ)充折算造價K2 K21 =6904.92/4=8400.876萬元 K22 =1832/4=2228.912萬元K23=0萬元12）替代電站補(bǔ)充造價本利年攤還值RP2 =K2(A/P，r0，n2)，其中n2=25。 RP21 =8400.876=786.984萬元 RP22 =2228.912=208.802萬元 RP23 =0萬元13）替代電站補(bǔ)充年運(yùn)行費(fèi)U2=K215% U21=K215%=6904.9235%=345.25萬元 U22=K225%=18325%=91.6萬元 U23=K235%=014）替代電站補(bǔ)充年燃料費(fèi)U2 U21= E212%=2589 2%=51.79萬元 U22= E222%=6872%=13.74萬元U23=015）替代電站補(bǔ)充年費(fèi)用ACt ACt1 =RP21 +U21 +U21 =1184.02萬元 ACt2=RP22+U22 +U22 =314.14萬元 ACt3=RP23+U23+U23 =0萬元16）系統(tǒng)年費(fèi)用ACs ACs1 = ACh1+ ACt1 =15268.38萬元 ACs2 = ACh2+ ACt2=14857.60萬元 ACs3 = ACh3+ ACt3=14709.25萬元正常蓄水位為227m、230m、233m三種方案水利動能經(jīng)濟(jì)計(jì)算成果見表水利動能經(jīng)濟(jì)計(jì)算成果表序號項(xiàng)目單位方案一方案二方案三1正常蓄水位Zmm2272302332水電站必須容量N1MW185.2739649191.3131511193.49411163N1MW8.2201466672電站多年平均年電能Eaa萬MW.h55.5821894857.3939453458.048233485E1萬MW.h2.4660440.6542881406水電站造價原值K1萬元120428.0772124353.5482125771.17257水電站折算造價K1萬元146518.849151294.7743153019.52738水電站本利年攤還值Rp1萬元11976.8694912367.2672812508.253519水電站正常年運(yùn)行費(fèi)U0萬元2107.4913512176.1870942200.99551910水電站年費(fèi)用ACh萬元14084.3608514543.4543714709.2490311替代電站補(bǔ)充裝機(jī)容量N2MW8.6311542.29000849012替代電站補(bǔ)充年電量E2萬MW.h2.58934620.687002547013替代電站補(bǔ)充造價原值K2萬元6904.92321832.006792014替代電站補(bǔ)充折算造價K2萬元8400.8764682228.911503015替代電站補(bǔ)充造價本利年攤還值Rp2萬元786.9838505208.8017082016替代電站補(bǔ)充年運(yùn)行費(fèi)U2萬元345.2461691.6003396017替代電站補(bǔ)充年燃料費(fèi)U2萬元51.78692413.74005094018替代電站補(bǔ)充年費(fèi)用ACt萬元1184.0169345314統(tǒng)年費(fèi)用ACs萬元15268.3777814857.5964714709.249032通過對計(jì)算結(jié)果的分析，各正常蓄水位方案在技術(shù)上都是可行的。從系統(tǒng)年費(fèi)用上看233.0m方案較為有利,從經(jīng)濟(jì)、技術(shù)、社會、環(huán)境等方面進(jìn)行綜合評價，選擇湖南鎮(zhèn)水電站正常蓄水位233.0m。2.2 死水位的選擇2.2.1 死水位選擇的步驟正常蓄水位已定的情況下，死水位選擇的步驟如下：（1）根據(jù)已定的正常蓄水位，確定三個相應(yīng)的死水位方案（199m,197m,195m）；（2）對三個死水位方案求得相應(yīng)的興利庫容和水庫消落深度；然后對每個方案進(jìn)行徑流調(diào)節(jié)，求得各個方案的調(diào)節(jié)流量（3）對三個死水位方案，計(jì)算保證出力，根據(jù)保證出力最大的原則選定死水位方案。根據(jù)計(jì)算分析，本水庫的設(shè)計(jì)保證率為90%，則允許破壞年數(shù)為： =2年 在每種方案中，流量從最小往大選，去掉允許破壞年2年，每種方案時間段的選擇與徑流調(diào)節(jié)與保證出力計(jì)算如下表所示：死水位為199m時徑流調(diào)節(jié)與保證出力計(jì)算表時段t單位1970年8月91011121971,12 3 4567891011月平均天然淶水m/s25.1050.4036.7016.5041.8015.4013.9025.1070.90133.00184.0010.308.9137.8010.605.44Q調(diào)65.2565.2565.2565.2565.2565.2565.2565.2565.2565.2565.2565.2565.2565.2565.2565.25水庫供水流量40.1514.8528.5548.7523.4549.8551.3540.15-5.65-67.75-118.7554.9556.3427.4554.6559.81水庫供水量億m1.060.390.751.280.621.311.351.06-0.15-1.78