NEWS
穿心電容知識
您所在的位置:
首頁 >
新聞資訊
> 穿心電容知識
關于低壓電容器的無功補償原理與操作補充規定!
一、低壓電容器柜的操作,按電器開關柜的操作規程進行操作。
二、各泵(beng)站(zhan)開(kai)泵(beng)時,砂泵(beng)運行(xing)(xing)起來后,即將低(di)壓(ya)(ya)電(dian)容(rong)器(qi)柜(ju)(ju)投入運行(xing)(xing)。正常停泵(beng)時,先(xian)停低(di)壓(ya)(ya)電(dian)容(rong)器(qi)柜(ju)(ju),后停砂泵(beng),停變壓(ya)(ya)器(qi)。若(ruo)發生機、電(dian)事故,可先(xian)停砂泵(beng),后停電(dian)容(rong)器(qi)柜(ju)(ju)。
三(san)、班間操作注(zhu)意事項:
1、班間電壓監視,若(ruo)各泵站電壓顯示過410伏(fu)時,及(ji)時切除(chu)低(di)壓電容(rong)器;電壓下降至410伏(fu)以下時將電容(rong)器投(tou)入運(yun)行(xing)。
2、電(dian)容器(qi)若發現:“鼓肚子(zi)”、漏(lou)油(you)、發熱、冒(mao)煙、異常聲響(xiang)等情況,必須及時斷開電(dian)容器(qi)柜開關,通知電(dian)工進行處(chu)理。
四(si)、低壓電容器的(de)投入與切除,是為了有效地(di)進行(xing)系統的(de)無功補償,提高功率因素,提高企業的(de)經濟效益(yi)的(de)重要手段之一,車間對電容器的(de)投、切將(jiang)納入考核,希望各泵站認真地(di)按操(cao)作規程執行(xing)。大多(duo)數(shu)用電設備均是根據電磁感應原理工作的(de),如配電變(bian)壓器、電動機等,它們(men)都是依靠建立交(jiao)變(bian)磁場才能(neng)進行(xing)能(neng)量的(de)轉(zhuan)換(huan)和傳遞。
為建(jian)立(li)交變(bian)磁場和感(gan)應磁通而需要的(de)電(dian)(dian)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)稱為無功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv),在功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)三角形中,有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)P與視(shi)在功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)S的(de)比(bi)值,稱為功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)因(yin)數cosφ,其計算公(gong)式(shi)為:cosφ=P/S=P/(P2+Q2)1/2在電(dian)(dian)網的(de)運行中,功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)因(yin)數反映了電(dian)(dian)源(yuan)輸(shu)出的(de)視(shi)在功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)被有(you)效利用(yong)的(de)程度(du),如何使(shi)得配電(dian)(dian)系統(tong)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)因(yin)數盡可能接近(jin)于1,使(shi)得電(dian)(dian)路(lu)中的(de)無功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)可以降(jiang)到(dao)較(jiao)小,視(shi)在功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)將大部分用(yong)來供(gong)給有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv),從而提高電(dian)(dian)能輸(shu)送的(de)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)。降(jiang)低(di)配電(dian)(dian)系統(tong)的(de)電(dian)(dian)能損耗,是配電(dian)(dian)系統(tong)節能的(de)途徑之一(yi)。
技術特(te)點:
采(cai)用無功補償(chang)(chang)通常有二(er)種(zhong)方式(shi),集中自動(dong)補償(chang)(chang),和就地固定(ding)補償(chang)(chang)。集中自動(dong)補償(chang)(chang)調節靈活,但不能解決(jue)線(xian)損的問題。
隨著經濟的(de)發展和人(ren)民(min)(min)生活水平的(de)提高,大量(liang)的(de)居住樓(lou)盤、高擋商場(chang)、賓(bin)館、辦(ban)公樓(lou)等民(min)(min)用建筑在(zai)城市(shi)中(zhong)(zhong)拔地而(er)起,使城市(shi)用電量(liang)快速增長。但是,在(zai)這些民(min)(min)用建筑場(chang)所(suo)內使用的(de)多為(wei)單(dan)相(xiang)電感性負荷,因(yin)(yin)其自身功率(lv)因(yin)(yin)數較低,在(zai)電網中(zhong)(zhong)滯后無功功率(lv)的(de)比(bi)重較大。
為確保(bao)(bao)降(jiang)(jiang)低電(dian)(dian)(dian)網(wang)中的(de)(de)無(wu)功(gong)(gong)功(gong)(gong)率(lv)(lv),提(ti)高功(gong)(gong)率(lv)(lv)因數,保(bao)(bao)障有功(gong)(gong)功(gong)(gong)率(lv)(lv)的(de)(de)充分利用(yong),提(ti)高系統的(de)(de)供(gong)電(dian)(dian)(dian)效(xiao)率(lv)(lv)和電(dian)(dian)(dian)壓質量(liang),減少線(xian)路損(sun)耗(hao),降(jiang)(jiang)低配電(dian)(dian)(dian)線(xian)路的(de)(de)成本(ben),節約電(dian)(dian)(dian)能,通常在低壓供(gong)配電(dian)(dian)(dian)系統中裝設電(dian)(dian)(dian)容(rong)器無(wu)功(gong)(gong)補償裝臵。