文章來源：國家電(dian)網(wang)公(gong)司 發布(bu)時間：2009-08-28
為緩解西(xi)藏(zang)地(di)(di)區(qu)冬春(chun)季(ji)節(jie)電(dian)(dian)力供應緊張狀況(kuang)，西(xi)藏(zang)電(dian)(dian)力有限公(gong)司在今年(nian)年(nian)初建(jian)(jian)成(cheng)藏(zang)中電(dian)(dian)網應急電(dian)(dian)源工程的基礎上(shang),積極開拓地(di)(di)熱(re)發(fa)電(dian)(dian)新途徑，建(jian)(jian)設羊八井(jing)雙螺桿膨脹動力機地(di)(di)熱(re)發(fa)電(dian)(dian)示范(fan)工程。
截至目前，工程主廠房及附(fu)屬土建工程已經完成70%，雙螺桿膨脹動力機及輔(fu)機、發電機和5面控制盤柜已安裝完畢。
雙螺(luo)桿膨(peng)脹動力機(ji)是(shi)一種新型的將(jiang)熱(re)能轉換成(cheng)機(ji)械能的熱(re)機(ji)，是(shi)我國(guo)擁有自主知(zhi)識(shi)產權(quan)的高新技術(shu)產品(pin)。羊八井地(di)熱(re)電(dian)廠(chang)是(shi)中(zhong)國(guo)最大(da)的地(di)熱(re)電(dian)站，總裝(zhuang)機(ji)容量(liang)為24.18萬千瓦。目前，西藏地(di)熱(re)發電(dian)已(yi)經起(qi)到舉(ju)足輕重(zhong)的作用，發電(dian)量(liang)在(zai)電(dian)網中(zhong)占10%，在(zai)冬季與枯水期(qi)可達(da)12%。
羊(yang)八(ba)(ba)井(jing)雙螺桿膨脹動力(li)(li)機地熱(re)發電示范(fan)工(gong)(gong)(gong)程于5月18日正(zheng)式開工(gong)(gong)(gong)，工(gong)(gong)(gong)程建(jian)設資金(jin)401萬元，在羊(yang)八(ba)(ba)井(jing)4001號(hao)深(shen)層井(jing)安(an)裝一臺(tai)1000千瓦地熱(re)發電機組(zu)，用于供汽發電。該工(gong)(gong)(gong)程可以將地熱(re)水全部引(yin)入動力(li)(li)機膨脹做功，地熱(re)水在送入動力(li)(li)機之(zhi)前，無需進行擴容等處理，因而能量利用率較高。西藏公司(si)高度重(zhong)視工(gong)(gong)(gong)程建(jian)設，參建(jian)員工(gong)(gong)(gong)加班加點(dian)，克(ke)服施(shi)工(gong)(gong)(gong)中(zhong)出現的諸多(duo)困難(nan)，確(que)保了工(gong)(gong)(gong)程的順(shun)利進行。