發布時間：2018-03-30
電(dian)(dian)網(wang)之間的(de)互(hu)(hu)聯(lian)(lian)(lian)是(shi)世界各國(guo)發展電(dian)(dian)網(wang)的(de)主(zhu)要經驗(yan)，跨區聯(lian)(lian)(lian)網(wang)和跨國(guo)聯(lian)(lian)(lian)網(wang)是(shi)實現更大(da)范圍(wei)內能(neng)源(yuan)資(zi)源(yuan)優化配置和提高電(dian)(dian)網(wang)整(zheng)體(ti)經濟效益的(de)重要途徑。互(hu)(hu)聯(lian)(lian)(lian)電(dian)(dian)網(wang)作為(wei)(wei)(wei)一個(ge)動態(tai)(tai)平(ping)衡系統，故(gu)(gu)障(zhang)發生(sheng)時，原有平(ping)衡被打(da)破，故(gu)(gu)障(zhang)能(neng)量(liang)瞬(shun)間傳至整(zheng)個(ge)電(dian)(dian)網(wang)，系統狀態(tai)(tai)迅(xun)速(su)惡化，防御不當將(jiang)導致故(gu)(gu)障(zhang)范圍(wei)迅(xun)速(su)擴大(da)，甚(shen)至發生(sheng)大(da)停(ting)電(dian)(dian)。據統計，21世紀發生(sheng)的(de)負荷損(sun)失超(chao)過300萬千瓦的(de)大(da)停(ting)電(dian)(dian)事故(gu)(gu)中，90%以(yi)上與故(gu)(gu)障(zhang)后動態(tai)(tai)過程中輸電(dian)(dian)斷面(mian)連鎖斷開和受端電(dian)(dian)網(wang)電(dian)(dian)壓(ya)崩潰(kui)相關，造(zao)成(cheng)的(de)總(zong)經濟損(sun)失超(chao)過1000億美元。與國(guo)外(wai)相比，我國(guo)電(dian)(dian)網(wang)輸電(dian)(dian)規模、輸電(dian)(dian)距離、電(dian)(dian)壓(ya)等級(ji)均居世界第一，電(dian)(dian)網(wang)運(yun)行(xing)面(mian)臨(lin)的(de)輸電(dian)(dian)安全運(yun)行(xing)、電(dian)(dian)網(wang)電(dian)(dian)壓(ya)穩定(ding)等問題更為(wei)(wei)(wei)嚴(yan)峻，建立可靠的(de)互(hu)(hu)聯(lian)(lian)(lian)電(dian)(dian)網(wang)動態(tai)(tai)過程安全防御體(ti)系成(cheng)為(wei)(wei)(wei)亟需解決的(de)任務。
國家電(dian)(dian)網(wang)(wang)(wang)所(suo)屬中國電(dian)(dian)力(li)(li)科學研(yan)(yan)(yan)究(jiu)院歷時14年，一(yi)是(shi)建立了(le)(le)(le)電(dian)(dian)力(li)(li)系(xi)統強迫振(zhen)蕩(dang)理(li)論，攻克(ke)了(le)(le)(le)輸電(dian)(dian)斷面(mian)動(dong)態功率分析與控(kong)制(zhi)技(ji)術，研(yan)(yan)(yan)制(zhi)出(chu)分類(lei)分時聯合控(kong)制(zhi)系(xi)統，解(jie)決了(le)(le)(le)輸電(dian)(dian)斷面(mian)功率波動(dong)和振(zhen)蕩(dang)“預測(ce)、辨識、定(ding)(ding)位、控(kong)制(zhi)”4項難(nan)題；二(er)是(shi)突(tu)破了(le)(le)(le)受(shou)端電(dian)(dian)網(wang)(wang)(wang)全(quan)過程(cheng)電(dian)(dian)壓(ya)穩(wen)(wen)定(ding)(ding)評估(gu)與控(kong)制(zhi)技(ji)術，制(zhi)定(ding)(ding)了(le)(le)(le)我國首個電(dian)(dian)壓(ya)穩(wen)(wen)定(ding)(ding)評價標準(zhun)(zhun)，研(yan)(yan)(yan)制(zhi)出(chu)電(dian)(dian)壓(ya)穩(wen)(wen)定(ding)(ding)全(quan)過程(cheng)防控(kong)系(xi)統，提(ti)(ti)出(chu)了(le)(le)(le)國家電(dian)(dian)網(wang)(wang)(wang)動(dong)態電(dian)(dian)壓(ya)支撐能力(li)(li)提(ti)(ti)升方案(an)，大幅提(ti)(ti)升電(dian)(dian)網(wang)(wang)(wang)電(dian)(dian)壓(ya)穩(wen)(wen)定(ding)(ding)水平；三是(shi)研(yan)(yan)(yan)發(fa)出(chu)世界首套“毫秒級-秒級-分鐘級”多(duo)時間尺度統一(yi)仿真的電(dian)(dian)力(li)(li)系(xi)統全(quan)過程(cheng)動(dong)態仿真軟件，實現了(le)(le)(le)國家電(dian)(dian)網(wang)(wang)(wang)（約(yue)50000節點）數十分鐘乃(nai)至數小(xiao)時動(dong)態過程(cheng)的準(zhun)(zhun)確仿真。
該項目產生直接經濟效益(yi)11.6億元，成果(guo)(guo)應(ying)用(yong)(yong)于34個省級(ji)及以上電(dian)網規劃(hua)調度運行，有(you)力(li)保(bao)障了(le)西南(nan)水電(dian)大規模送出，近三年減少長(chang)江上游(you)棄水電(dian)量533億千瓦時。成果(guo)(guo)應(ying)用(yong)(yong)于22個輸電(dian)工(gong)程、45套動(dong)態無(wu)功(gong)補償設備(bei)，累計提(ti)升輸電(dian)能力(li)約1600萬(wan)千瓦。成果(guo)(guo)還應(ying)用(yong)(yong)于巴(ba)西、葡萄(tao)牙等國家(jia)的電(dian)網安全(quan)分(fen)析(xi)中，大幅(fu)提(ti)升我國在(zai)相關(guan)領(ling)域的國際(ji)影(ying)響(xiang)力(li)。