文章來源：國(guo)家電網公司 發布(bu)時間：2012-04-11
3月25日，國家電(dian)(dian)(dian)(dian)網公司所(suo)屬的國家能源大型風(feng)(feng)電(dian)(dian)(dian)(dian)并網系統研發（實驗(yan)(yan)）中心(xin)張北風(feng)(feng)電(dian)(dian)(dian)(dian)試(shi)(shi)(shi)驗(yan)(yan)基地(di)，順利完成(cheng)1號風(feng)(feng)電(dian)(dian)(dian)(dian)機組(zu)低電(dian)(dian)(dian)(dian)壓穿(chuan)越(yue)測試(shi)(shi)(shi)的所(suo)有(you)測試(shi)(shi)(shi)項(xiang)目。張北風(feng)(feng)電(dian)(dian)(dian)(dian)試(shi)(shi)(shi)驗(yan)(yan)基地(di)是(shi)目前國內唯一具備開展低電(dian)(dian)(dian)(dian)壓穿(chuan)越(yue)試(shi)(shi)(shi)驗(yan)(yan)、可(ke)對風(feng)(feng)電(dian)(dian)(dian)(dian)機組(zu)進(jin)行電(dian)(dian)(dian)(dian)網適應性檢測的試(shi)(shi)(shi)驗(yan)(yan)基地(di)。
低電(dian)(dian)(dian)壓(ya)(ya)穿越是(shi)指當(dang)電(dian)(dian)(dian)網故障或擾動(dong)引(yin)起風電(dian)(dian)(dian)場并網點的(de)電(dian)(dian)(dian)壓(ya)(ya)跌(die)落(luo)(luo)時，在(zai)(zai)一(yi)定的(de)電(dian)(dian)(dian)壓(ya)(ya)跌(die)落(luo)(luo)范圍內，風電(dian)(dian)(dian)機組能夠不(bu)間斷并網運行。在(zai)(zai)本次(ci)測試(shi)(shi)期間，技(ji)術人員分別嚴格測試(shi)(shi)了該機組在(zai)(zai)多重條(tiao)件組合環(huan)境下的(de)低電(dian)(dian)(dian)壓(ya)(ya)穿越表(biao)現，包括(kuo)小功率輸出、大功率輸出、電(dian)(dian)(dian)網三相短(duan)路(lu)、相間短(duan)路(lu)以及不(bu)同(tong)電(dian)(dian)(dian)壓(ya)(ya)跌(die)落(luo)(luo)深度（20%、35%、50%、75%和90%）等20余種組合環(huan)境的(de)近百次(ci)測試(shi)(shi)。他們科學安(an)排測試(shi)(shi)計劃，嚴格遵守(shou)測試(shi)(shi)流程，積極幫(bang)助制造(zao)商(shang)調試(shi)(shi)和改善風機性(xing)能。
風(feng)(feng)電(dian)(dian)機(ji)組(zu)低電(dian)(dian)壓(ya)穿越(yue)能(neng)力(li)包(bao)括三項(xiang)重(zhong)要指標(biao)：風(feng)(feng)電(dian)(dian)場(chang)并網(wang)點(dian)電(dian)(dian)壓(ya)跌(die)至(zhi)20%標(biao)稱(cheng)電(dian)(dian)壓(ya)時，風(feng)(feng)電(dian)(dian)場(chang)內(nei)的(de)風(feng)(feng)電(dian)(dian)機(ji)組(zu)能(neng)夠保(bao)證(zheng)(zheng)不脫網(wang)連續運行625毫(hao)秒；風(feng)(feng)電(dian)(dian)場(chang)并網(wang)點(dian)電(dian)(dian)壓(ya)在(zai)發(fa)生跌(die)落后(hou)2秒內(nei)能(neng)夠恢(hui)復到標(biao)稱(cheng)電(dian)(dian)壓(ya)的(de)90%時，風(feng)(feng)電(dian)(dian)場(chang)內(nei)的(de)風(feng)(feng)電(dian)(dian)機(ji)組(zu)能(neng)夠保(bao)證(zheng)(zheng)不脫網(wang)連續運行；風(feng)(feng)電(dian)(dian)機(ji)組(zu)有功(gong)功(gong)率(lv)(lv)在(zai)故障清(qing)(qing)除后(hou)應快(kuai)速恢(hui)復，自故障清(qing)(qing)除時刻開始，能(neng)以(yi)至(zhi)少(shao)10％額定(ding)功(gong)率(lv)(lv)秒的(de)功(gong)率(lv)(lv)變化(hua)率(lv)(lv)恢(hui)復至(zhi)故障前的(de)值。
經(jing)各方共同(tong)努力，1號風(feng)電(dian)機組(zu)的(de)各項性(xing)能指標均滿足國家電(dian)網公司企業標準(zhun)對低電(dian)壓穿越能力的(de)要求(qiu)，順利通過了風(feng)電(dian)機組(zu)低電(dian)壓穿越現場測試(shi)。