無功的增加會導致電源質量的大幅下降，引起電源電壓降低，同時就會導致所工作在無功損耗很高的電源電壓下工作運行的設備效率降低，損耗不斷增加，引起設備嚴重發熱導致燒毀現象，所以就必須采用無功功率補償裝置來補償無功功率因素。那么，高低壓無功補償柜是怎么自動工作的？

一(yi)般是(shi)(shi)采(cai)用投入或者切除移相電(dian)(dian)容(rong)的(de)(de)(de)方式來(lai)補(bu)(bu)償的(de)(de)(de)，具體無功(gong)不錯控制(zhi)柜就是(shi)(shi)采(cai)用自動無功(gong)功(gong)率(lv)因(yin)素補(bu)(bu)償控制(zhi)器(qi)來(lai)完成(cheng)的(de)(de)(de)。這種裝置一(yi)般是(shi)(shi)檢(jian)測(ce)電(dian)(dian)源線(xian)路至(zhi)負荷端的(de)(de)(de)無功(gong)功(gong)率(lv)因(yin)素后實時投入補(bu)(bu)償的(de)(de)(de)。正(zheng)常情況下，當(dang)功(gong)率(lv)因(yin)數低于0.9、電(dian)(dian)壓偏(pian)低是(shi)(shi)會投入電(dian)(dian)容(rong)器(qi)組(zu)，當(dang)功(gong)率(lv)因(yin)數接近1且超前，電(dian)(dian)壓偏(pian)高時會自動退(tui)出電(dian)(dian)容(rong)組(zu)，3.當(dang)功(gong)率(lv)參數異常，超出電(dian)(dian)容(rong)器(qi)的(de)(de)(de)工作條件時，會退(tui)出電(dian)(dian)容(rong)器(qi)組(zu)，如(ru)果電(dian)(dian)容(rong)器(qi)三相電(dian)(dian)流明顯不平(ping)衡，也會退(tui)出運行，應進行檢(jian)查。

SVCH高壓動態無功補償裝置是(shi)目前電(dian)(dian)力系(xi)統(tong)(tong)中(zhong)(zhong)應用(yong)最(zui)多、最(zui)為(wei)成(cheng)熟的動態(tai)并(bing)聯補償(chang)設備，也(ye)是(shi)一(yi)類較(jiao)早得到應用(yong)的FACTS設備。裝(zhuang)置是(shi)綜合應用(yong)現代(dai)電(dian)(dian)力電(dian)(dian)子技術(shu)、電(dian)(dian)能控制技術(shu)、以及自動化技術(shu)而研制開發的高(gao)科技產(chan)品，是(shi)一(yi)種能夠為(wei)電(dian)(dian)力系(xi)統(tong)(tong)快速而連(lian)續(xu)地提供(gong)容性(xing)和感性(xing)無功功率(lv)的電(dian)(dian)力電(dian)(dian)子裝(zhuang)置，主要應用(yong)于3~35kV的交流電(dian)(dian)力系(xi)統(tong)(tong)中(zhong)(zhong)，與系(xi)統(tong)(tong)并(bing)聯連(lian)接，可根(gen)據系(xi)統(tong)(tong)需(xu)要動態(tai)連(lian)續(xu)提供(gong)無功功率(lv)，消除諧(xie)波(bo)，能改善用(yong)戶的電(dian)(dian)壓質(zhi)量，減少電(dian)(dian)壓波(bo)動及電(dian)(dian)壓閃(shan)變。

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