文(wen)章來源：國家電網公司 發布時(shi)間(jian)：2009-08-28
為緩解(jie)西藏(zang)地區冬(dong)春季節電(dian)(dian)力供應(ying)緊(jin)張(zhang)狀況，西藏(zang)電(dian)(dian)力有限公司在今年年初建(jian)成(cheng)藏(zang)中(zhong)電(dian)(dian)網應(ying)急電(dian)(dian)源(yuan)工程(cheng)的基礎(chu)上,積極開拓(tuo)地熱發電(dian)(dian)新途徑，建(jian)設羊八(ba)井雙螺桿膨脹動力機地熱發電(dian)(dian)示范工程(cheng)。
截(jie)至目前(qian)，工(gong)程主廠房及附屬土(tu)建工(gong)程已(yi)經(jing)完(wan)(wan)成70%，雙螺桿膨脹動力(li)機及輔機、發電機和5面(mian)控制(zhi)盤柜(ju)已(yi)安裝完(wan)(wan)畢。
雙螺桿膨脹動(dong)力(li)機(ji)是一種新型的將熱(re)(re)能轉(zhuan)換成機(ji)械能的熱(re)(re)機(ji)，是我國(guo)擁(yong)有自主知(zhi)識產權的高新技術(shu)產品。羊八井(jing)地熱(re)(re)電廠是中國(guo)最(zui)大的地熱(re)(re)電站，總裝(zhuang)機(ji)容量(liang)為24.18萬千瓦(wa)。目前，西藏地熱(re)(re)發電已經(jing)起到舉足輕重的作用(yong)，發電量(liang)在電網中占(zhan)10%，在冬季與枯水期(qi)可達12%。
羊八(ba)井(jing)(jing)雙螺桿膨(peng)(peng)脹動(dong)力(li)(li)機地(di)熱發電(dian)示范工(gong)(gong)(gong)程于(yu)5月(yue)18日正式開(kai)工(gong)(gong)(gong)，工(gong)(gong)(gong)程建設(she)(she)資金401萬(wan)元，在(zai)羊八(ba)井(jing)(jing)4001號深層(ceng)井(jing)(jing)安裝一臺1000千(qian)瓦地(di)熱發電(dian)機組，用于(yu)供汽發電(dian)。該工(gong)(gong)(gong)程可(ke)以(yi)將地(di)熱水(shui)全部引入動(dong)力(li)(li)機膨(peng)(peng)脹做功，地(di)熱水(shui)在(zai)送入動(dong)力(li)(li)機之(zhi)前，無需進行擴容(rong)等(deng)處理，因而能量利用率較高(gao)。西藏公司(si)高(gao)度重(zhong)視工(gong)(gong)(gong)程建設(she)(she)，參建員工(gong)(gong)(gong)加班加點，克服施工(gong)(gong)(gong)中出現的諸(zhu)多(duo)困難，確(que)保了工(gong)(gong)(gong)程的順(shun)利進行。