想要知道電氣設備為什么要進行無功補償,首先我(wo)們要(yao)知道什么叫無功補償。
無功補償 ,是一種(zhong)在電(dian)力(li)供(gong)(gong)電(dian)系統(tong)中起提高電(dian)網的(de)功率(lv)因數的(de)作(zuo)用,降低供(gong)(gong)電(dian)變壓器及輸送線(xian)路的(de)損耗(hao),提高供(gong)(gong)電(dian)效率(lv),改(gai)善供(gong)(gong)電(dian)環境的(de)技(ji)術。
絕大(da)多數電氣設(she)備在運行時需要無功和有功。
有功(gong)功(gong)率(lv):直接(jie)消(xiao)耗電能,把電能轉變為(wei)機(ji)械能、熱能、化學能或(huo)聲(sheng)能,利用這些能作功(gong),這部(bu)分功(gong)率(lv)稱為(wei)有功(gong)功(gong)率(lv);
無功(gong)功(gong)率:消耗電(dian)能(neng),但只是把電(dian)能(neng)轉換為(wei)另一(yi)種形式的(de)能(neng),這(zhe)種能(neng)作為(wei)電(dian)氣設(she)備能(neng)夠作功(gong)的(de)必(bi)備條件,并且,這(zhe)種能(neng)是在電(dian)網中與電(dian)能(neng)進行周(zhou)期性轉換,這(zhe)部分功(gong)率稱為(wei)無功(gong)功(gong)率。
有功(gong)功(gong)率(lv)(lv)的(de)(de)平(ping)方+無(wu)功(gong)功(gong)率(lv)(lv)的(de)(de)平(ping)方=視在功(gong)率(lv)(lv)的(de)(de)平(ping)方,是一(yi)個三角函數的(de)(de)關系。
功(gong)率(lv)(lv)(lv)因(yin)數=有功(gong)功(gong)率(lv)(lv)(lv)/視在功(gong)率(lv)(lv)(lv),即cosΦ=P/S ,而功(gong)率(lv)(lv)(lv)因(yin)數是(shi)衡量電氣設備效率(lv)(lv)(lv)高低的一(yi)個系數。
在一定的(de)有功(gong)功(gong)率(lv)下,功(gong)率(lv)因數低,說明電路用于(yu)交變磁(ci)場轉換的(de)無功(gong)功(gong)率(lv)大,電能損(sun)失越大,因此供電部門對用電單位的(de)功(gong)率(lv)因數有一定的(de)標準要求。
電(dian)網中的(de)(de)電(dian)力負荷(he),如電(dian)動(dong)機、變壓(ya)器(qi)、日光燈及(ji)電(dian)弧爐(lu)等,大多屬(shu)于電(dian)感(gan)(gan)性(xing)負荷(he),這些電(dian)感(gan)(gan)性(xing)的(de)(de)設備(bei)在(zai)運行過程中不僅需(xu)要向電(dian)力系(xi)統(tong)吸(xi)收(shou)(shou)有功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv),還同時吸(xi)收(shou)(shou)無(wu)(wu)(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)。因(yin)此在(zai)電(dian)網中安(an)裝(zhuang)并(bing)聯電(dian)容器(qi)無(wu)(wu)(wu)功(gong)(gong)(gong)補(bu)償設備(bei)后,將(jiang)可(ke)以提供補(bu)償感(gan)(gan)性(xing)負荷(he)所消耗的(de)(de)無(wu)(wu)(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv),減(jian)(jian)少了電(dian)網電(dian)源(yuan)側(ce)向感(gan)(gan)性(xing)負荷(he)提供及(ji)由(you)線(xian)(xian)路輸(shu)(shu)送的(de)(de)無(wu)(wu)(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)。由(you)于減(jian)(jian)少了無(wu)(wu)(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)在(zai)電(dian)網中的(de)(de)流動(dong),因(yin)此可(ke)以降低輸(shu)(shu)配(pei)電(dian)線(xian)(xian)路中變壓(ya)器(qi)及(ji)母線(xian)(xian)因(yin)輸(shu)(shu)送無(wu)(wu)(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)造成的(de)(de)電(dian)能損耗,這就是無(wu)(wu)(wu)功(gong)(gong)(gong)補(bu)償的(de)(de)效益(yi)。 無(wu)(wu)(wu)功(gong)(gong)(gong)補(bu)償的(de)(de)主要目(mu)的(de)(de)就是提升補(bu)償系(xi)統(tong)的(de)(de)功(gong)(gong)(gong)率(lv)因(yin)數。
通(tong)過以上的(de)介紹(shao),我們知道了安裝無(wu)功(gong)補償(chang)設備(bei)的(de)重要性,選(xuan)擇無(wu)功(gong)補償(chang)設備(bei),一(yi)定要選(xuan)擇正規、合格的(de)產品。
希拓(tuo)電氣專(zhuan)注解決無功補償問題,為用(yong)戶提供合理的(de)解決方(fang)案。