電力有源濾波中的投(tou)切(qie)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)具(ju)有(you)特殊的電(dian)(dian)(dian)(dian)磁過(guo)零(ling)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)技術。 過(guo)零(ling)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)的偏移小于2.5。 開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)浪(lang)涌電(dian)(dian)(dian)(dian)流小于額定(ding)電(dian)(dian)(dian)(dian)流的2.5倍(bei)。 智能控(kong)制(zhi)單元通(tong)過(guo)在斷(duan)開(kai)(kai)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)的動態和(he)靜(jing)態觸點(dian)時(shi)(shi)檢(jian)測(ce)兩端(duan)電(dian)(dian)(dian)(dian)壓來控(kong)制(zhi)電(dian)(dian)(dian)(dian)壓的零(ling)交(jiao)叉點(dian)的閉合(he)(he)：通(tong)過(guo)在投(tou)切(qie)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)的動態和(he)靜(jing)態觸點(dian)時(shi)(shi)檢(jian)測(ce)電(dian)(dian)(dian)(dian)流來控(kong)制(zhi)電(dian)(dian)(dian)(dian)壓閉合(he)(he)時(shi)(shi)，控(kong)制(zhi)其在電(dian)(dian)(dian)(dian)流的過(guo)零(ling)點(dian)處斷(duan)開(kai)(kai)以實現“過(guo)零(ling)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)”功(gong)能，使(shi)低壓功(gong)率電(dian)(dian)(dian)(dian)容器投(tou)入運行時(shi)(shi)產生(sheng)的浪(lang)涌電(dian)(dian)(dian)(dian)流很小，并且(qie)沒有(you)返回低壓功(gong)率電(dian)(dian)(dian)(dian)容器時(shi)(shi)會產生(sheng)電(dian)(dian)(dian)(dian)弧，從而(er)延長了(le)低壓功(gong)率電(dian)(dian)(dian)(dian)容器和(he)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)設(she)備(bei)(bei)本身的壽命，還減少了(le)開(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)設(she)備(bei)(bei)接通(tong)和(he)關(guan)(guan)(guan)(guan)(guan)(guan)閉時(shi)(shi)對電(dian)(dian)(dian)(dian)網的影響：提高(gao)了(le)電(dian)(dian)(dian)(dian)網的電(dian)(dian)(dian)(dian)能質量。

通常情況下，電氣設備不僅需要從電源獲取有功功率，而且還需要從電源獲取電力有源濾波。如果(guo)電(dian)網中的(de)(de)無(wu)(wu)功(gong)功(gong)率供應超過需求(qiu)，則電(dian)氣設備(bei)將沒有(you)足夠的(de)(de)無(wu)(wu)功(gong)功(gong)率來(lai)建立正常(chang)的(de)(de)電(dian)磁場，這些電(dian)氣設備(bei)將無(wu)(wu)法在(zai)額定條件下運行，并(bing)且電(dian)氣設備(bei)的(de)(de)端電(dian)壓將下降，這會影響電(dian)氣設備(bei)的(de)(de)正常(chang)運行。

電力有源濾波在電(dian)源中占有重要地(di)(di)位(wei)。使(shi)用合理的補(bu)償設備(bei)，可(ke)以最(zui)大程度地(di)(di)減(jian)少(shao)電(dian)網(wang)損(sun)耗。相(xiang)反，選擇或使(shi)用不當可(ke)能會導(dao)致(zhi)許多(duo)因素(su)，例如(ru)電(dian)源系統(tong)，電(dian)壓波動和諧波增(zeng)加。

電力有源濾波的(de)保(bao)護功(gong)能包(bao)括(kuo)：配電過壓(ya)，欠壓(ya)，失壓(ya)和缺(que)相保(bao)護； 電源輸入端子過熱(re)保(bao)護； 功(gong)率電容器(qi)相過流段保(bao)護； 功(gong)率電容器(qi)主體內部的(de)超溫部分保(bao)護等。

從應用市場來看，電力有源濾波行業在國內外飛速發展，已經滲透到電能的產生、輸送、分配和應用的各個環節，廣泛應用到工業系統、電力系統、交通系統、通信系統、計算機系統、新能源系統和日常生活中，是使用電能的其他所有產業的基礎技術。同時在國家對先進制造業的大力支持下促進了云南有源濾波行業的發展，在全社會提倡節能減(jian)排和安全生(sheng)產宏觀(guan)背景下，產品市(shi)(shi)場(chang)需求(qiu)仍將保持增長，市(shi)(shi)場(chang)空間逐步擴大，給經營與(yu)發展帶來良好的機遇與(yu)廣(guang)闊的空間。

從發電機和高壓輸電線供給的無功功率，遠遠滿足不了負荷的需要，所以在電網中要設置一些無功補償裝置來補充無功功率，電力有源濾波以保證用戶對無(wu)功(gong)(gong)功(gong)(gong)率的(de)需要，這樣用電設備才(cai)能在額定電壓下工(gong)作。這就(jiu)是(shi)電網需要裝設無(wu)功(gong)(gong)補(bu)償裝置(zhi)的(de)道(dao)理。