三(san)(san)里坪水(shui)(shui)電(dian)(dian)站(zhan)位(wei)于湖北(bei)省房(fang)縣五臺龍潭峪三(san)(san)里坪,是南(nan)河十(shi)三(san)(san)個梯級(ji)電(dian)(dian)站(zhan)中的第四級(ji),以防洪、發(fa)(fa)電(dian)(dian)為(wei)主(zhu),兼顧(gu)防洪、航(hang)運、水(shui)(shui)產養殖、灌溉、旅游等(deng)綜(zong)合效益的國家大二型水(shui)(shui)利水(shui)(shui)電(dian)(dian)樞紐(niu)工程,是南(nan)河干流的第一座(zuo)較大的中型水(shui)(shui)電(dian)(dian)站(zhan)工程。電(dian)(dian)站(zhan)總裝機容量為(wei)70MW(2× 35MW),設計多年平均年發(fa)(fa)電(dian)(dian)量為(wei)1.8億(yi)kW×h;水(shui)(shui)庫正常蓄水(shui)(shui)位(wei)416m,相應庫容為(wei)4.99億(yi)m;大壩(ba)最(zui)大壩(ba)高(gao)141m,是國內(nei)目前已建和在(zai)建壩(ba)高(gao)最(zui)高(gao)的碾(nian)壓混凝(ning)土雙曲(qu)拱壩(ba) 。
基本情況
2004年(nian)8月(yue)(yue)(yue),國(guo)家發(fa)展和(he)改(gai)革(ge)委員會以發(fa)改(gai)農經[2004]1800號文(wen)(wen)批復了(le)該(gai)工(gong)(gong)程(cheng)(cheng)(cheng)可行性研究報(bao)告(gao);2006年(nian),國(guo)家發(fa)展和(he)改(gai)革(ge)委員會以發(fa)改(gai)投(tou)資[2006]1337號文(wen)(wen),核(he)定該(gai)工(gong)(gong)程(cheng)(cheng)(cheng)初步(bu)設計(ji)(ji)概算(suan);2007年(nian)10月(yue)(yue)(yue)湖(hu)北省水(shui)(shui)利(li)(li)(li)廳以鄂水(shui)(shui)利(li)(li)(li)電復[2007]253號文(wen)(wen)批復了(le)該(gai)工(gong)(gong)程(cheng)(cheng)(cheng)的初步(bu)設計(ji)(ji)報(bao)告(gao)。湖(hu)北省以鄂水(shui)(shui)利(li)(li)(li)建復(2008)72號文(wen)(wen)下(xia)達《關于房(fang)縣三里(li)坪水(shui)(shui)利(li)(li)(li)水(shui)(shui)電樞紐(niu)工(gong)(gong)程(cheng)(cheng)(cheng)開(kai)工(gong)(gong)的批復》。2006年(nian)4月(yue)(yue)(yue),前期工(gong)(gong)程(cheng)(cheng)(cheng)開(kai)始施(shi)工(gong)(gong),2009年(nian)6月(yue)(yue)(yue)主體工(gong)(gong)程(cheng)(cheng)(cheng)開(kai)始施(shi)工(gong)(gong),2010年(nian)5月(yue)(yue)(yue)13日(ri),大壩混凝土開(kai)始澆筑,工(gong)(gong)程(cheng)(cheng)(cheng)計(ji)(ji)劃2013年(nian)7月(yue)(yue)(yue)首臺水(shui)(shui)輪發(fa)電機組(zu)投(tou)產發(fa)電,2013年(nian)10月(yue)(yue)(yue)第2臺水(shui)(shui)輪發(fa)電機組(zu)投(tou)產發(fa)電,工(gong)(gong)程(cheng)(cheng)(cheng)完工(gong)(gong)。
地理位置
三里(li)坪水(shui)(shui)電(dian)站位(wei)(wei)于(yu)湖北省(sheng)房(fang)縣(xian)境內,壩址(zhi)位(wei)(wei)于(yu)在漢江中游(you)一級支流(liu)南河中段(duan)三里(li)坪村下游(you)約1.3km的鏈子崖(ya)處,距房(fang)縣(xian)縣(xian)城近50km、至河口129km,是(shi)南河流(liu)域干流(liu)梯級開發中的骨干工(gong)程(cheng)(cheng),大壩正常蓄水(shui)(shui)位(wei)(wei)416.0m,相應庫容(rong)4.72億(yi)m3,調節庫容(rong)2.11億(yi)m3,本工(gong)程(cheng)(cheng)是(shi)以(yi)防洪、發電(dian)為(wei)主,兼有灌溉、水(shui)(shui)庫養殖、庫區(qu)航(hang)運(yun)等(deng)綜合效益的水(shui)(shui)利(li)樞紐工(gong)程(cheng)(cheng)。地下電(dian)站廠房(fang)裝有2臺混流(liu)式水(shui)(shui)輪發電(dian)機(ji)組,額定(ding)單(dan)機(ji)容(rong)量為(wei)35MW,額定(ding)總裝機(ji)容(rong)量為(wei)70MW;最大單(dan)機(ji)容(rong)量為(wei)40MW,最大總裝機(ji)容(rong)量為(wei)80MW;年設計發電(dian)量1.83億(yi)千瓦時(shi)(shi),年設計發電(dian)利(li)用(yong)小(xiao)時(shi)(shi)數2620小(xiao)時(shi)(shi),保(bao)證出力1.24萬千瓦。
運作方式
在(zai)非(fei)汛(xun)期利用上庫(ku)(ku)的調(diao)節(jie)能力(li)進行(xing)日(ri)調(diao)節(jie)運(yun)用;在(zai)主汛(xun)期和秋(qiu)汛(xun)期水庫(ku)(ku)以(yi)下游防洪安(an)全為主,當入庫(ku)(ku)流量滿足電(dian)站(zhan)發電(dian)需(xu)要時充分發揮調(diao)峰作用,當電(dian)站(zhan)來(lai)水流量較小(xiao),電(dian)站(zhan)將(jiang)按保證(zheng)出力(li)發電(dian),盡(jin)可能保持(chi)水庫(ku)(ku)在(zai)高水位運(yun)行(xing)。
水(shui)(shui)利(li)樞紐由碾壓(ya)混凝土(tu)雙曲(qu)拱壩、泄洪(hong)消能建筑(zhu)物(wu)、引水(shui)(shui)式地(di)下電站廠房組成。攔(lan)河(he)(he)大壩最大壩高(gao)(gao)141.00m,壩軸線長284.62m,壩頂高(gao)(gao)程420m,河(he)(he)床建基面高(gao)(gao)程279m。
地下廠(chang)(chang)(chang)房位于(yu)大壩右岸山體(ti)內,廠(chang)(chang)(chang)房采用中部(bu)式。電站(zhan)(zhan)主要(yao)建筑物由進水口、引(yin)水隧洞(dong)及(ji)壓力鋼管、主廠(chang)(chang)(chang)房洞(dong)室群(含主副廠(chang)(chang)(chang)房、安(an)裝(zhuang)場、母線洞(dong))、尾(wei)(wei)水隧洞(dong)、尾(wei)(wei)水閘(zha)門井、尾(wei)(wei)水渠、交(jiao)通洞(dong)、出線洞(dong)及(ji)地面開關站(zhan)(zhan)等組成。
電氣主接線
電站(zhan)發電機和主變(bian)壓(ya)器組(zu)合(he)方式采用一(yi)機一(yi)變(bian)單元接線,110KV(GIS開關站(zhan))出(chu)線一(yi)回,110KV電壓(ya)側采用單母接線。
接入系統
以一回(hui)110KV線路接入房縣220KV開關站(zhan),線路總長30.5km。
廠用電系統
400V廠用(yong)電(dian)I段、II段分別經兩臺(tai)容(rong)量為(wei)1250KVA;電(dian)壓為(wei)10.5±2X.2.5%/0.4KV干式(shi)變(bian)壓器(qi)接(jie)入(ru)1#、2#發電(dian)機10.5kv母(mu)線,;備用(yong)電(dian)源(yuan)由青峰(feng)變(bian)電(dian)站經10KV線路供電(dian)通過一臺(tai)容(rong)量為(wei)800KVA電(dian)壓為(wei)10.5±2X.2.5%/0.4KV干式(shi)變(bian)壓器(qi)接(jie)入(ru)400VII段,廠內500KW柴油發電(dian)機作為(wei)后備電(dian)源(yuan)接(jie)入(ru)400VI段;400V分為(wei)兩段,加設母(mu)聯(lian)開關采(cai)用(yong)南京自動化公(gong)司備自投裝置實(shi)現自動投切;壩區采(cai)用(yong)250kW柴油發電(dian)機作為(wei)應急(ji)供電(dian)電(dian)源(yuan)。
控制方式
電(dian)站(zhan)采用南京南瑞集(ji)(ji)團生(sheng)產的(de)計算機(ji)監控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)系統實現(xian)全廠(chang)生(sheng)產設(she)(she)備(bei)集(ji)(ji)中監測監控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong),電(dian)站(zhan)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)分(fen)為三(san)層:現(xian)地(di)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)級(ji)、廠(chang)站(zhan)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)級(ji)和調(diao)(diao)度控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)級(ji)。控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)調(diao)(diao)節方(fang)式的(de)優先級(ji)從高(gao)到(dao)低為:現(xian)地(di)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)級(ji)、主站(zhan)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)級(ji)、調(diao)(diao)度控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)級(ji)。在主站(zhan)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)方(fang)式下,現(xian)地(di)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)單元只(zhi)接受通過廠(chang)站(zhan)級(ji)(中控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)室)人機(ji)接口設(she)(she)備(bei)發布的(de)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)及調(diao)(diao)節命令(ling)。調(diao)(diao)度級(ji)只(zhi)能采集(ji)(ji)、監視(shi)來(lai)自(zi)三(san)里坪水(shui)電(dian)站(zhan)的(de)運行信息和數據,不能直接對電(dian)站(zhan)的(de)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)對象進(jin)行遠方(fang)控(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)與(yu)操(cao)作(zuo)。
調度方式
三里坪水電站由湖(hu)北省電力(li)調度(du)通信(xin)中心調度(du)。
電站建設(she)單位(wei)(wei)為湖北能源集團房縣水(shui)(shui)(shui)利(li)水(shui)(shui)(shui)電發展有限公司(業主(zhu)),設(she)計(ji)單位(wei)(wei)為長江(jiang)水(shui)(shui)(shui)利(li)委員會長江(jiang)勘(kan)測規劃設(she)計(ji)研究(jiu)院,主(zhu)要施工單位(wei)(wei)中國水(shui)(shui)(shui)電十五局。