眾所周知，現在電網中的諧波源越來越多，例如大量的應用變頻器以及電助熔等設備，產生大量的諧波，增加變電器的損耗，電纜升溫的情況也隨之出現，影響了設備的正常使用，提升了故障停電的可能。正是基于這樣的背景下，消諧電抗電容器應運(yun)而生，有效(xiao)避免出現受諧波的(de)影響，從(cong)而出現諧振(zhen)的(de)情況(kuang)。
在含(han)有諧(xie)(xie)(xie)波(bo)的系(xi)(xi)統(tong)中(zhong)，使(shi)用(yong)消諧(xie)(xie)(xie)電(dian)(dian)(dian)(dian)(dian)抗(kang)電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)，能(neng)夠有效避免出(chu)現系(xi)(xi)統(tong)受到(dao)諧(xie)(xie)(xie)波(bo)的影響，從而(er)出(chu)現諧(xie)(xie)(xie)振的情(qing)況。在電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)組中(zhong)主要(yao)是(shi)(shi)由電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)與電(dian)(dian)(dian)(dian)(dian)抗(kang)器(qi)(qi)所組成，使(shi)用(yong)消諧(xie)(xie)(xie)電(dian)(dian)(dian)(dian)(dian)抗(kang)電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)可(ke)以對電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)串聯電(dian)(dian)(dian)(dian)(dian)抗(kang)器(qi)(qi)的功(gong)率因數進行(xing)改善。在消諧(xie)(xie)(xie)電(dian)(dian)(dian)(dian)(dian)抗(kang)電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)中(zhong)，選擇抗(kang)值(zhi)時需要(yao)注意產生(sheng)諧(xie)(xie)(xie)波(bo)的情(qing)況下，電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)總(zong)抗(kang)值(zhi)不應(ying)使(shi)用(yong)容(rong)抗(kang)，而(er)是(shi)(shi)應(ying)該(gai)使(shi)用(yong)感抗(kang)，從源頭消除(chu)系(xi)(xi)統(tong)工作中(zhong)產生(sheng)的諧(xie)(xie)(xie)波(bo)。
使用帶消諧低壓電容器的好處
通過實際案例我們了解到，采用純電容器無功補償，會放(fang)大諧波電流，導致設(she)備被損壞。所以我們鼓勵在企(qi)業中使(shi)(shi)用和推廣(guang)消諧電抗電容器(qi)，此舉可以消除(chu)純電容器(qi)使(shi)(shi)用中過流或過壓(ya)引起的(de)事(shi)故，明顯提高電容器(qi)了的(de)使(shi)(shi)用壽命，減少了設(she)備維(wei)修率，同時就會為(wei)企(qi)業節省大量(liang)的(de)維(wei)修資金(jin)(jin)和設(she)備的(de)更(geng)換資金(jin)(jin)，直接轉(zhuan)化成有效地經濟效益。
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