據(ju)中央(yang)電(dian)(dian)(dian)視臺報道(dao),2018年12月(yue)25日13時21分,隨著(zhu)第57號(hao)風(feng)機的成(cheng)功并網(wang)(wang),國家電(dian)(dian)(dian)投(tou)大(da)豐H3海(hai)上(shang)風(feng)電(dian)(dian)(dian)項目(mu)72臺風(feng)機順利實(shi)現全容量(liang)投(tou)產并網(wang)(wang)。標(biao)志著(zhu)我國離岸最遠的海(hai)上(shang)風(feng)電(dian)(dian)(dian)場正式投(tou)入運(yun)營;標(biao)志著(zhu)該(gai)項目(mu)順利實(shi)現全容量(liang)并網(wang)(wang),創下了(le)電(dian)(dian)(dian)力行業內同等規模海(hai)上(shang)風(feng)電(dian)(dian)(dian)項目(mu)建設及投(tou)運(yun)在當年開(kai)工、當年建成(cheng)、當年收(shou)益(yi)的三項紀(ji)錄。也為我國在深海(hai)領域(yu)發展大(da)容量(liang)、大(da)規模海(hai)上(shang)風(feng)電(dian)(dian)(dian)積累了(le)寶貴經(jing)驗。
2018年2月,遼寧榮(rong)信興業電力技(ji)術有(you)限公司(si)與國(guo)家(jia)電投集團江蘇海(hai)上(shang)風(feng)力發電有(you)限公司(si)成功簽訂(ding)中(zhong)電投大豐H3#300MW海(hai)上(shang)風(feng)電場陸上(shang)集控(kong)中(zhong)心(xin)SVG項目。
該項目位于江蘇(su)鹽城大豐亮(liang)月沙北側海域(yu)(yu),平臺內(nei)總裝機(ji)(ji)容量302.4MW,中心離(li)岸(an)距離(li)43km,規劃海域(yu)(yu)面積為90k㎡,平臺內(nei)安裝了(le)72臺單機(ji)(ji)容量4.2MW風電機(ji)(ji)組,預計年發(fa)電量約8.5億(yi)kWh。
該RSVG項(xiang)目共(gong)2套35kV 40M SVG,根據海上平(ping)臺濕度大,高鹽霧(wu)的運行環(huan)境,RSVG采用水循環(huan)的冷卻方(fang)式。2018年9月,2套設(she)備成功(gong)投入運行。
不同于榮信興業以往海上平(ping)臺的(de)SVG項(xiang)(xiang)目(mu)(mu),該項(xiang)(xiang)目(mu)(mu)是目(mu)(mu)前(qian)國(guo)內(nei)建成離(li)(li)岸距離(li)(li)最遠的(de)海上風電項(xiang)(xiang)目(mu)(mu)。通過該項(xiang)(xiang)目(mu)(mu)設備的(de)運行經(jing)驗(yan),為(wei)后續更多(duo)的(de)海上平(ping)臺項(xiang)(xiang)目(mu)(mu)奠定成熟穩定的(de)技術(shu)基礎。
1. 新能源場(chang)(chang)站應(ying)用(yong)案(an)例(li)-風(feng)電 項(xiang)(xiang)目名稱(cheng):華能山西東馬(ma)坊風(feng)電場(chang)(chang)SVG項(xiang)(xiang)目 應(ying)用(yong)分類:風(feng)電場(chang)(chang) 項(xiang)(xiang)目要求:控(kong)制風(feng)電場(chang)(chang)110kV側母線電壓
當(dang)前(qian)大(da)規模風(feng)(feng)電(dian)(dian)(dian)場由數(shu)百臺甚至數(shu)千臺風(feng)(feng)電(dian)(dian)(dian)機(ji)(ji)(ji)組組成(cheng),它們類型多樣(雙饋風(feng)(feng)電(dian)(dian)(dian)機(ji)(ji)(ji)組、鼠(shu)籠式(shi)風(feng)(feng)電(dian)(dian)(dian)機(ji)(ji)(ji)組、直(zhi)驅風(feng)(feng)電(dian)(dian)(dian)機(ji)(ji)(ji)組等),控(kong)制參數(shu)各異,而(er)且運行(xing)方式(shi)各不相同(tong)。風(feng)(feng)電(dian)(dian)(dian)場大(da)多地處偏遠地區(qu),遠離(li)負荷中心,其并網點短路(lu)比(SCR)隨(sui)著(zhu)風(feng)(feng)電(dian)(dian)(dian)機(ji)(ji)(ji)組并網數(shu)量的增(zeng)加(jia)而(er)降低,形成(cheng)弱(ruo)交流系統(tong)。同(tong)時,大(da)規模風(feng)(feng)電(dian)(dian)(dian)場常采(cai)用高壓直(zhi)流輸(shu)電(dian)(dian)(dian)(HVDC)技術或串(chuan)聯(lian)補償(chang)技術實(shi)現遠距離(li)外送(song)。相關研究表(biao)明,當(dang)風(feng)(feng)電(dian)(dian)(dian)場并入弱(ruo)交流系統(tong)、含串(chuan)聯(lian)補償(chang)系統(tong),以及HVDC系統(tong)時,均可能發生次同(tong)步振蕩。
福建省華安水(shui)電(dian)廠(chang)電(dian)力發展公司35kV金山2#變電(dian)站10kV母線(xian)(xian)接有裕興(xing)Ⅰ、Ⅱ、Ⅲ、Ⅳ路(lu)4條(tiao)饋線(xian)(xian),供(gong)華易鑫鐵廠(chang)負荷,其中裕興(xing)Ⅰ、Ⅱ路(lu)分別供(gong)兩臺容(rong)(rong)量(liang)為8000kVA電(dian)弧(hu)爐,裕興(xing)Ⅲ路(lu)供(gong)一臺容(rong)(rong)量(liang)為4000kVA精煉(lian)爐,裕興(xing)Ⅳ路(lu)供(gong)一臺容(rong)(rong)量(liang)630kVA動力變及5000kVA無功(gong)補(bu)償(chang)裝置(zhi)。正常生產時,兩臺電(dian)弧(hu)爐和精煉(lian)爐會同時生產。
因為電(dian)(dian)(dian)弧爐工作時(shi)會(hui)產(chan)生很大無功(gong)沖(chong)擊,會(hui)使電(dian)(dian)(dian)網公共母線(xian)上(shang)產(chan)生較(jiao)(jiao)大的(de)(de)(de)(de)無功(gong)變動,且會(hui)產(chan)生不規(gui)則的(de)(de)(de)(de)低(di)次諧波(bo)(bo),對離(li)此負(fu)荷較(jiao)(jiao)近的(de)(de)(de)(de)水(shui)力(li)發(fa)電(dian)(dian)(dian)廠設備產(chan)生較(jiao)(jiao)大影(ying)響(xiang)。現(xian)場(chang)反饋電(dian)(dian)(dian)弧爐工作時(shi),水(shui)力(li)發(fa)電(dian)(dian)(dian)機組的(de)(de)(de)(de)有(you)功(gong)功(gong)率波(bo)(bo)動達6MW~7MW,有(you)功(gong)功(gong)率的(de)(de)(de)(de)快速(su)波(bo)(bo)動可能(neng)導致機組振動,對機組的(de)(de)(de)(de)長期穩定運(yun)行有(you)著極大危害(hai)。