三(san)里(li)坪(ping)水(shui)電站(zhan)(zhan)(zhan)位(wei)于湖北省房縣(xian)五臺龍潭峪三(san)里(li)坪(ping),是南河十三(san)個梯級(ji)(ji)電站(zhan)(zhan)(zhan)中(zhong)(zhong)的第四級(ji)(ji),以防洪、發電為(wei)主(zhu),兼顧防洪、航運、水(shui)產(chan)養殖、灌溉、旅游等(deng)綜(zong)合效益的國(guo)家大(da)二(er)型水(shui)利(li)水(shui)電樞紐工程(cheng),是南河干流的第一(yi)座較大(da)的中(zhong)(zhong)型水(shui)電站(zhan)(zhan)(zhan)工程(cheng)。電站(zhan)(zhan)(zhan)總裝機容(rong)量為(wei)70MW(2× 35MW),設(she)計(ji)多年(nian)平均(jun)年(nian)發電量為(wei)1.8億(yi)(yi)kW×h;水(shui)庫(ku)正常蓄(xu)水(shui)位(wei)416m,相應庫(ku)容(rong)為(wei)4.99億(yi)(yi)m;大(da)壩(ba)(ba)(ba)最(zui)(zui)大(da)壩(ba)(ba)(ba)高141m,是國(guo)內目前(qian)已建(jian)(jian)和在(zai)建(jian)(jian)壩(ba)(ba)(ba)高最(zui)(zui)高的碾壓(ya)混凝土雙(shuang)曲(qu)拱(gong)壩(ba)(ba)(ba) 。
基本情況
2004年(nian)8月,國家(jia)(jia)發(fa)(fa)展(zhan)和改(gai)革(ge)委員會(hui)(hui)以發(fa)(fa)改(gai)農經[2004]1800號(hao)文(wen)批(pi)復(fu)了該工(gong)程(cheng)可行(xing)性研究(jiu)報(bao)告;2006年(nian),國家(jia)(jia)發(fa)(fa)展(zhan)和改(gai)革(ge)委員會(hui)(hui)以發(fa)(fa)改(gai)投資[2006]1337號(hao)文(wen),核定(ding)該工(gong)程(cheng)初步(bu)設計(ji)(ji)概算(suan);2007年(nian)10月湖(hu)北(bei)省水(shui)(shui)利(li)(li)廳以鄂(e)水(shui)(shui)利(li)(li)電(dian)復(fu)[2007]253號(hao)文(wen)批(pi)復(fu)了該工(gong)程(cheng)的初步(bu)設計(ji)(ji)報(bao)告。湖(hu)北(bei)省以鄂(e)水(shui)(shui)利(li)(li)建復(fu)(2008)72號(hao)文(wen)下達《關于房縣(xian)三(san)里坪水(shui)(shui)利(li)(li)水(shui)(shui)電(dian)樞紐工(gong)程(cheng)開工(gong)的批(pi)復(fu)》。2006年(nian)4月,前期工(gong)程(cheng)開始(shi)施(shi)工(gong),2009年(nian)6月主體工(gong)程(cheng)開始(shi)施(shi)工(gong),2010年(nian)5月13日,大壩混凝土開始(shi)澆筑,工(gong)程(cheng)計(ji)(ji)劃(hua)2013年(nian)7月首臺水(shui)(shui)輪發(fa)(fa)電(dian)機組(zu)投產發(fa)(fa)電(dian),2013年(nian)10月第2臺水(shui)(shui)輪發(fa)(fa)電(dian)機組(zu)投產發(fa)(fa)電(dian),工(gong)程(cheng)完工(gong)。
地理位置
三里坪(ping)水(shui)(shui)電站(zhan)位于(yu)湖北省(sheng)房縣境內,壩址位于(yu)在漢江中游(you)一級(ji)(ji)支(zhi)流(liu)(liu)南(nan)河中段三里坪(ping)村下游(you)約1.3km的(de)鏈子崖處,距(ju)房縣縣城(cheng)近50km、至河口129km,是(shi)南(nan)河流(liu)(liu)域干流(liu)(liu)梯級(ji)(ji)開(kai)發中的(de)骨干工(gong)程(cheng),大(da)壩正常蓄水(shui)(shui)位416.0m,相(xiang)應庫(ku)容(rong)4.72億m3,調節庫(ku)容(rong)2.11億m3,本工(gong)程(cheng)是(shi)以(yi)防洪、發電為主,兼(jian)有(you)灌溉、水(shui)(shui)庫(ku)養殖、庫(ku)區航運等綜合(he)效(xiao)益的(de)水(shui)(shui)利樞紐工(gong)程(cheng)。地下電站(zhan)廠房裝有(you)2臺混流(liu)(liu)式水(shui)(shui)輪發電機(ji)(ji)(ji)組(zu),額(e)定單機(ji)(ji)(ji)容(rong)量(liang)為35MW,額(e)定總(zong)裝機(ji)(ji)(ji)容(rong)量(liang)為70MW;最大(da)單機(ji)(ji)(ji)容(rong)量(liang)為40MW,最大(da)總(zong)裝機(ji)(ji)(ji)容(rong)量(liang)為80MW;年(nian)設計(ji)發電量(liang)1.83億千(qian)瓦(wa)時(shi),年(nian)設計(ji)發電利用小(xiao)時(shi)數2620小(xiao)時(shi),保證出力1.24萬(wan)千(qian)瓦(wa)。
運作方式
在(zai)(zai)非汛(xun)(xun)期(qi)利用上庫的調節(jie)(jie)能力(li)進行日調節(jie)(jie)運(yun)用;在(zai)(zai)主汛(xun)(xun)期(qi)和秋汛(xun)(xun)期(qi)水(shui)庫以下游防洪(hong)安全(quan)為主,當(dang)入庫流量(liang)(liang)滿足電(dian)站(zhan)發電(dian)需要時充分發揮調峰作用,當(dang)電(dian)站(zhan)來(lai)水(shui)流量(liang)(liang)較小,電(dian)站(zhan)將按保(bao)證出力(li)發電(dian),盡可能保(bao)持(chi)水(shui)庫在(zai)(zai)高(gao)水(shui)位(wei)運(yun)行。
水(shui)利(li)樞紐由碾(nian)壓混凝(ning)土(tu)雙曲(qu)拱壩(ba)、泄洪消能建筑物、引(yin)水(shui)式地(di)下(xia)電站廠(chang)房組成。攔河大壩(ba)最大壩(ba)高(gao)141.00m,壩(ba)軸線長284.62m,壩(ba)頂(ding)高(gao)程420m,河床建基面高(gao)程279m。
地下廠房(fang)位于大(da)壩(ba)右岸山(shan)體內(nei),廠房(fang)采用中部式。電站主要建(jian)筑物由進水(shui)口、引水(shui)隧洞(dong)(dong)及壓(ya)力鋼管、主廠房(fang)洞(dong)(dong)室群(含(han)主副廠房(fang)、安裝(zhuang)場、母線洞(dong)(dong))、尾水(shui)隧洞(dong)(dong)、尾水(shui)閘門井、尾水(shui)渠、交通洞(dong)(dong)、出線洞(dong)(dong)及地面開關站等組成。
電氣主接線
電站發電機和主變壓(ya)器組合方式采用一(yi)機一(yi)變單元接(jie)線,110KV(GIS開關(guan)站)出線一(yi)回,110KV電壓(ya)側采用單母接(jie)線。
接入系統
以一回110KV線(xian)路接(jie)入房縣220KV開(kai)關站(zhan),線(xian)路總(zong)長30.5km。
廠用電系統
400V廠(chang)用(yong)(yong)電(dian)(dian)(dian)(dian)I段(duan)、II段(duan)分別(bie)經兩臺容量(liang)為(wei)1250KVA;電(dian)(dian)(dian)(dian)壓為(wei)10.5±2X.2.5%/0.4KV干式變壓器接(jie)入1#、2#發(fa)電(dian)(dian)(dian)(dian)機10.5kv母線(xian),;備用(yong)(yong)電(dian)(dian)(dian)(dian)源由青峰變電(dian)(dian)(dian)(dian)站(zhan)經10KV線(xian)路供電(dian)(dian)(dian)(dian)通過一臺容量(liang)為(wei)800KVA電(dian)(dian)(dian)(dian)壓為(wei)10.5±2X.2.5%/0.4KV干式變壓器接(jie)入400VII段(duan),廠(chang)內500KW柴(chai)油發(fa)電(dian)(dian)(dian)(dian)機作(zuo)為(wei)后備電(dian)(dian)(dian)(dian)源接(jie)入400VI段(duan);400V分為(wei)兩段(duan),加設母聯開關采(cai)用(yong)(yong)南京自動(dong)化公司備自投裝(zhuang)置(zhi)實現自動(dong)投切;壩區采(cai)用(yong)(yong)250kW柴(chai)油發(fa)電(dian)(dian)(dian)(dian)機作(zuo)為(wei)應急供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源。
控制方式
電站(zhan)(zhan)采用南(nan)京南(nan)瑞集團生產的(de)計算機監控(kong)(kong)(kong)系統(tong)實現(xian)全(quan)廠(chang)生產設備集中監測監控(kong)(kong)(kong),電站(zhan)(zhan)控(kong)(kong)(kong)制(zhi)分為三(san)層:現(xian)地控(kong)(kong)(kong)制(zhi)級、廠(chang)站(zhan)(zhan)控(kong)(kong)(kong)制(zhi)級和(he)調(diao)(diao)(diao)度(du)控(kong)(kong)(kong)制(zhi)級。控(kong)(kong)(kong)制(zhi)調(diao)(diao)(diao)節(jie)方式的(de)優先級從(cong)高(gao)到低為:現(xian)地控(kong)(kong)(kong)制(zhi)級、主站(zhan)(zhan)控(kong)(kong)(kong)制(zhi)級、調(diao)(diao)(diao)度(du)控(kong)(kong)(kong)制(zhi)級。在主站(zhan)(zhan)控(kong)(kong)(kong)制(zhi)方式下,現(xian)地控(kong)(kong)(kong)制(zhi)單元只接受(shou)通過廠(chang)站(zhan)(zhan)級(中控(kong)(kong)(kong)室)人機接口設備發布的(de)控(kong)(kong)(kong)制(zhi)及調(diao)(diao)(diao)節(jie)命令。調(diao)(diao)(diao)度(du)級只能(neng)采集、監視(shi)來自(zi)三(san)里坪水電站(zhan)(zhan)的(de)運(yun)行信息和(he)數據(ju),不能(neng)直接對電站(zhan)(zhan)的(de)控(kong)(kong)(kong)制(zhi)對象進行遠方控(kong)(kong)(kong)制(zhi)與操作。
調度方式
三里(li)坪水電站由湖北省電力調(diao)度通信中心調(diao)度。
電(dian)(dian)站(zhan)建設單位為(wei)湖北能源(yuan)集團房縣(xian)水(shui)(shui)利水(shui)(shui)電(dian)(dian)發展有限公司(業主(zhu)(zhu)),設計(ji)(ji)單位為(wei)長江水(shui)(shui)利委員(yuan)會(hui)長江勘測規劃(hua)設計(ji)(ji)研究院,主(zhu)(zhu)要施工單位中國水(shui)(shui)電(dian)(dian)十五局。