無功(gong)(gong)(gong)(gong)(gong)補(bu)償的基本原(yuan)理：電(dian)(dian)網輸出的功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)包括(kuo)兩部分;一是(shi)有(you)功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv);二(er)是(shi)無功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv).直接消(xiao)耗電(dian)(dian)能(neng)(neng)(neng),把電(dian)(dian)能(neng)(neng)(neng)轉變為機械能(neng)(neng)(neng),熱能(neng)(neng)(neng),化(hua)學能(neng)(neng)(neng)或聲能(neng)(neng)(neng),利用(yong)這(zhe)(zhe)些能(neng)(neng)(neng)作功(gong)(gong)(gong)(gong)(gong),這(zhe)(zhe)部分功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)稱(cheng)為有(you)功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv);不(bu)消(xiao)耗電(dian)(dian)能(neng)(neng)(neng);只(zhi)是(shi)把電(dian)(dian)能(neng)(neng)(neng)轉換(huan)為另一種(zhong)形式的能(neng)(neng)(neng),這(zhe)(zhe)種(zhong)能(neng)(neng)(neng)作為電(dian)(dian)氣設備(bei)能(neng)(neng)(neng)夠作功(gong)(gong)(gong)(gong)(gong)的必備(bei)條(tiao)件,并且,這(zhe)(zhe)種(zhong)能(neng)(neng)(neng)是(shi)在電(dian)(dian)網中(zhong)與電(dian)(dian)能(neng)(neng)(neng)進行周期性轉換(huan),這(zhe)(zhe)部分功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)稱(cheng)為無功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)。

生(sheng)產(chan)型企業無功(gong)補償(chang)模(mo)組(zu)設計時需(xu)要注意的事項

靜止(zhi)無功(gong)(gong)(gong)(gong)發(fa)(fa)生器能(neng)動(dong)(dong)態(tai)地補償(chang)無功(gong)(gong)(gong)(gong)電(dian)(dian)流(liu)和諧(xie)波電(dian)(dian)流(liu)，從而對(dui)減少線(xian)路(lu)損耗(hao)，增大(da)有功(gong)(gong)(gong)(gong)輸送(song)能(neng)力，抑制諧(xie)波，提高電(dian)(dian)能(neng)質量都起到(dao)很好(hao)的(de)(de)作用。靜止(zhi)無功(gong)(gong)(gong)(gong)發(fa)(fa)生器的(de)(de)基本原理是將自換(huan)相橋(qiao)式(shi)電(dian)(dian)路(lu)通過電(dian)(dian)抗(kang)器或(huo)者直接并聯(lian)到(dao)電(dian)(dian)網上，適當地調節橋(qiao)式(shi)電(dian)(dian)路(lu)交流(liu)側輸出電(dian)(dian)壓的(de)(de)相位和幅值，或(huo)者直接控制其交流(liu)側電(dian)(dian)流(liu)，可以(yi)使該電(dian)(dian)路(lu)吸收(shou)或(huo)者發(fa)(fa)出滿足要(yao)求的(de)(de)無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率，實現動(dong)(dong)態(tai)無功(gong)(gong)(gong)(gong)補償(chang)的(de)(de)目的(de)(de)。

第二個特點就(jiu)是(shi)電(dian)力系(xi)統過渡過程十分短暫。一般在正常(chang)(chang)運行狀(zhuang)態變化所(suo)引起的(de)電(dian)磁暫態和機電(dian)暫態的(de)過渡過程受電(dian)網相應的(de)時間常(chang)(chang)數制約，通(tong)常(chang)(chang)可(ke)在2-3個周期內完成，大約是(shi)40-60毫秒(miao)。如果在電(dian)力系(xi)統故障等非正常(chang)(chang)運行狀(zhuang)態一般也可(ke)以在小于10個周期內完成，大約是(shi)200毫秒(miao)。我們眨眼的(de)時間大約是(shi)500毫秒(miao)，大家可(ke)以感受一下(xia)這個速度。