隨著電力(li)(li)電子技術，特別是大(da)功(gong)率(lv)可關斷器(qi)件(jian)技術的(de)發展和日益(yi)完善，國內外還在研制、開發一種更為(wei)先進的(de)靜止(zhi)無(wu)功(gong)功(gong)率(lv)發生裝置(SVG)，SVG憑借著其優越(yue)的(de)性(xing)能(neng)(neng)特點，在電力(li)(li)系統中的(de)應用(yong)將越(yue)來越(yue)廣泛(fan)。電網輸出(chu)的(de)功(gong)率(lv)包括兩(liang)部(bu)(bu)分：有功(gong)功(gong)率(lv)和無(wu)功(gong)功(gong)率(lv)。有功(gong)功(gong)率(lv)是指直接(jie)消耗電能(neng)(neng)，把(ba)電能(neng)(neng)轉(zhuan)變為(wei)機械能(neng)(neng)、熱能(neng)(neng)或化學能(neng)(neng)，利用(yong)這部(bu)(bu)分能(neng)(neng)量作功(gong)。而無(wu)功(gong)功(gong)率(lv)則是指為(wei)建立交(jiao)變磁場所(suo)需要的(de)電功(gong)率(lv)，這部(bu)(bu)分電能(neng)(neng)并不做(zuo)功(gong)。

光纖無(wu)功補償元(yuan)器件的必要性

還(huan)有是(shi)電(dian)(dian)(dian)力(li)用(yong)戶的(de)非線性負(fu)荷,沖擊(ji)性負(fu)荷等大量(liang)投運的(de)因素，如煉鋼(gang)電(dian)(dian)(dian)弧爐，電(dian)(dian)(dian)氣化(hua)機車運行(xing)等對電(dian)(dian)(dian)能(neng)質量(liang)的(de)影響(xiang)，使公用(yong)電(dian)(dian)(dian)網(wang)產(chan)生大量(liang)的(de)諧波干(gan)擾，產(chan)生電(dian)(dian)(dian)壓擾動(dong)，產(chan)生電(dian)(dian)(dian)壓波動(dong)與閃(shan)變(bian)等。比如說居民(min)、商業區及(ji)小工廠供電(dian)(dian)(dian)系統配電(dian)(dian)(dian)點的(de)電(dian)(dian)(dian)能(neng)質量(liang)檢測，根據重要程度(du)一(yi)(yi)般一(yi)(yi)個月(yue)或一(yi)(yi)季(ji)度(du)檢測一(yi)(yi)次，并應進行(xing)詳細的(de)記錄(lu)存檔。定期巡(xun)檢使用(yong)的(de)儀器(qi)主(zhu)要是(shi)便攜式電(dian)(dian)(dian)能(neng)質量(liang)分析(xi)儀或手持式電(dian)(dian)(dian)能(neng)質量(liang)分析(xi)儀。

高壓(ya)集(ji)中(zhong)補(bu)償(chang)(chang)是指將電(dian)(dian)容(rong)器(qi)裝(zhuang)于(yu)變(bian)電(dian)(dian)站(zhan)或用(yong)(yong)戶(hu)降壓(ya)變(bian)電(dian)(dian)站(zhan)6 kV～10 kV高壓(ya)母線(xian)的補(bu)償(chang)(chang)方(fang)式；電(dian)(dian)容(rong)器(qi)也(ye)可(ke)裝(zhuang)設于(yu)用(yong)(yong)戶(hu)總(zong)配(pei)電(dian)(dian)室低壓(ya)母線(xian),適用(yong)(yong)于(yu)負荷較集(ji)中(zhong)、離配(pei)電(dian)(dian)母線(xian)較近、補(bu)償(chang)(chang)容(rong)量較大(da)的場所(suo)，用(yong)(yong)戶(hu)本身(shen)又有一定(ding)的高壓(ya)負荷時，可(ke)減少(shao)對電(dian)(dian)力(li)系統(tong)無功的消耗并起到一定(ding)的補(bu)償(chang)(chang)作用(yong)(yong)。其(qi)優點是易(yi)于(yu)實行(xing)自動(dong)投切，可(ke)合理地(di)提高用(yong)(yong)戶(hu)的功率(lv)(lv)因素，利用(yong)(yong)率(lv)(lv)高,投資較少(shao)，便(bian)于(yu)維護，調節方(fang)便(bian)可(ke)避免過補(bu)，改善電(dian)(dian)壓(ya)質(zhi)量。但這種補(bu)償(chang)(chang)方(fang)式的補(bu)償(chang)(chang)經濟(ji)效益較差。