2020年3月26日,隨著青海省電力公司完成最新一次抄表(抄表統計周期為上月26日至當月25日),青海中控德令哈50MW光熱電站3月份運行數據正式出爐:當月累計發電量達1301.34萬kWh,上網電量1163.52萬kWh,月度發電量達成率達100.31%。
運(yun)(yun)行記錄顯示,本(ben)月(yue)(yue)29天(tian)(tian)中(zhong),有兩天(tian)(tian)受陰天(tian)(tian)影響未能(neng)運(yun)(yun)行,電(dian)(dian)站實(shi)際運(yun)(yun)行27天(tian)(tian)。當(dang)月(yue)(yue)DNI總量(liang)175.71kWh/m2,性能(neng)模(mo)型計算的(de)理(li)論發電(dian)(dian)量(liang)為(wei)1297.30萬kWh,實(shi)際發電(dian)(dian)量(liang)1301.34萬kWh,月(yue)(yue)度發電(dian)(dian)量(liang)達成率(lv)達100.31%。相(xiang)比(bi)2月(yue)(yue)份(fen)的(de)102.9%,3月(yue)(yue)份(fen)發電(dian)(dian)量(liang)達成率(lv)略有降(jiang)低(di),主要原因在(zai)于(yu)3月(yue)(yue)份(fen)多云(yun)天(tian)(tian)較多,相(xiang)比(bi)2月(yue)(yue)份(fen)運(yun)(yun)行難(nan)度提(ti)高;此外,3月(yue)(yue)20日這天(tian)(tian)根(gen)據氣(qi)象預測顯示,現(xian)場天(tian)(tian)氣(qi)不佳,電(dian)(dian)站決定當(dang)日組織對輸出線路進行檢修,集(ji)熱(re)系(xi)統(tong)未運(yun)(yun)行,通(tong)過性能(neng)模(mo)型計算,當(dang)日DNI總量(liang)2.76kWh/m2,實(shi)際少發電(dian)(dian)約15萬kWh。
青海中控德令(ling)哈(ha)50MW光熱電站于2019年9月底正式移交生產運行并進(jin)入(ru)性能考(kao)核期,至此電站已經穩定運行半年,各項技(ji)術指(zhi)標均優于設(she)計(ji)值。
考核期(qi)間共182天(tian)(tian),其中(zhong)有24天(tian)(tian)受陰云天(tian)(tian)影響未能運(yun)行(xing),電(dian)站實際運(yun)行(xing)158天(tian)(tian),未出現因設(she)備故障停機的情(qing)況(kuang),期(qi)間共有76天(tian)(tian)單日(ri)發(fa)電(dian)量達(da)(da)成(cheng)率(lv)(lv)(lv)超過100%。半年度(du)DNI總量為1055.69kWh/m2,累積(ji)發(fa)電(dian)量達(da)(da)7486.96萬(wan)kWh,上網電(dian)量達(da)(da)6708.71萬(wan)kWh,平均(jun)發(fa)電(dian)量達(da)(da)成(cheng)率(lv)(lv)(lv)達(da)(da)97.06%,其中(zhong)2020年1月、2月、3月發(fa)電(dian)量達(da)(da)成(cheng)率(lv)(lv)(lv)更是連續超過100%。創(chuang)下(xia)全球同(tong)類(lei)型電(dian)站投(tou)運(yun)后(hou)同(tong)期(qi)的最(zui)高記錄。
圖(tu)1:電(dian)站性(xing)能考(kao)核期內各(ge)月度發(fa)電(dian)量數據
表1:電站性(xing)能(neng)考(kao)核期內主要運行數據
塔式光(guang)熱(re)電(dian)(dian)(dian)(dian)站(zhan)因技術(shu)復(fu)雜、系(xi)統流(liu)程長、運行難度大,國際上(shang)普遍認為一般需要經過3-5年(nian)(nian)“學習期”的性(xing)能爬(pa)坡,才可以完(wan)全(quan)達(da)到(dao)(dao)設計發電(dian)(dian)(dian)(dian)量(liang),而國際上(shang)同(tong)(tong)類型電(dian)(dian)(dian)(dian)站(zhan)的EPC合同(tong)(tong)中,一般也要求在(zai)性(xing)能考核期內首年(nian)(nian)的發電(dian)(dian)(dian)(dian)量(liang)達(da)成率為70%-80%。根據已經公布的運行數據來看,目前尚未有(you)同(tong)(tong)類電(dian)(dian)(dian)(dian)站(zhan)宣布完(wan)全(quan)達(da)到(dao)(dao)設計發電(dian)(dian)(dian)(dian)量(liang)。青海(hai)中控德令哈50MW光(guang)熱(re)電(dian)(dian)(dian)(dian)站(zhan)在(zai)進入性(xing)能考核期后的第一個(ge)半(ban)年(nian)(nian)內平均發電(dian)(dian)(dian)(dian)量(liang)達(da)成率即達(da)到(dao)(dao)97.06%,彰顯(xian)了中國光(guang)熱(re)發電(dian)(dian)(dian)(dian)在(zai)技術(shu)、裝備、工程、運營方面的全(quan)面優勢。
未來半年(nian),中控太陽能(neng)技術團隊將重(zhong)點開展優化(hua)運行(xing)研(yan)究(jiu),在現有運行(xing)水平的基礎之(zhi)上進一步提升發電量(liang)達成率,力(li)爭到今年(nian)9月(yue)底,即進入性能(neng)考核的第一個年(nian)度,平均發電量(liang)達成率達到或超過100%!
圖(tu)2:運行中的青海中控德令哈50MW光熱電站(zhan)