目前(qian),歐美各國都在開展利用(yong)先(xian)進技術抑制(zhi)電力消費高峰的實驗,智能電表(biao)在發揮結(jie)算、管理等作用(yong)的同(tong)時(shi)(shi),也為智能用(yong)電提供(gong)了豐(feng)富、實時(shi)(shi)的增值服務。
智能電表初的安裝目的是提升遠程抄表、遠程開關等業務的效率。有了智能電表,每戶的電力需求可以詳細把握,并可以根據需要只啟動必要數量的發電與配電設備。雖然智能電表需要成本和安裝費用,但是可以控制對發電與配電設備的投資。此外,近年來智能電表控制高峰需求期電力消費量的效果也越來越明顯。電力公司利用智能電表向用戶發送電力相關信息(消費量與單價等),從而根據需求響應減少電力消費量。
作為(wei)智能電(dian)(dian)(dian)網中(zhong)為(wei)基礎的設(she)備之一,智能電(dian)(dian)(dian)表(biao)本身的節(jie)能技術(shu)也在不斷受到(dao)關注。因為(wei)智能電(dian)(dian)(dian)表(biao)需要使用(yong)(yong)(yong)專用(yong)(yong)(yong)的電(dian)(dian)(dian)池(chi),如果智能電(dian)(dian)(dian)表(biao)很(hen)耗電(dian)(dian)(dian),電(dian)(dian)(dian)池(chi)的壽命就會(hui)縮短,表(biao)內電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)量不足還會(hui)影響計(ji)量和用(yong)(yong)(yong)戶(hu)用(yong)(yong)(yong)電(dian)(dian)(dian)。要為(wei)數(shu)以千萬計(ji)的智能電(dian)(dian)(dian)表(biao)更換(huan)電(dian)(dian)(dian)池(chi)對電(dian)(dian)(dian)力(li)公(gong)司(si)和用(yong)(yong)(yong)戶(hu)都(dou)是一件(jian)繁瑣和耗費(fei)成(cheng)本的事。
為解(jie)決(jue)上述問題,可以使(shi)用安森美半導(dao)體(ti)的(de)(de)一些有針對(dui)性的(de)(de)解(jie)決(jue)方案,從設計之初(chu)就(jiu)解(jie)決(jue)智能電(dian)表(biao)的(de)(de)耗(hao)電(dian)問題。
電源管理和穩壓方案:
在這方面安(an)森(sen)美半導體有豐富的器(qi)(qi)件(jian)可(ke)供(gong)使用,比如在AC-DC轉(zhuan)換應(ying)用方面,有用于低功率(lv)離(li)線(xian)(xian)電(dian)源的自供(gong)電(dian)高電(dian)壓(ya)單片開(kai)關穩壓(ya)器(qi)(qi)NCP1010-4、用于中等功率(lv)離(li)線(xian)(xian)電(dian)源的單片開(kai)關穩壓(ya)器(qi)(qi)NCP1027、高電(dian)壓(ya)門控振蕩器(qi)(qi)單片開(kai)關穩壓(ya)器(qi)(qi)NCP1050-5;
在(zai)DC-DC轉換應(ying)用(yong)方(fang)面(mian),有3A開(kai)關穩壓(ya)(ya)器(qi)(qi)NCP3170和NCP3155、1.5開(kai)關穩壓(ya)(ya)器(qi)(qi)或用(yong)作高(gao)達5A控制器(qi)(qi)的(de)(de)NCP3063/4、0.5A/1.0 A/3A開(kai)關穩壓(ya)(ya)器(qi)(qi)LM2594/5/6、PWM控制器(qi)(qi)NCP3020/11和NCP1034;在(zai)LDO方(fang)面(mian),有500mA LDO線(xian)(xian)性(xing)(xing)穩壓(ya)(ya)器(qi)(qi)NCP5500、200mA輸出LDO線(xian)(xian)性(xing)(xing)穩壓(ya)(ya)器(qi)(qi)NCP4588、50/150mA線(xian)(xian)性(xing)(xing)穩壓(ya)(ya)器(qi)(qi)NCP4640/1、100mA LDO線(xian)(xian)性(xing)(xing)穩壓(ya)(ya)器(qi)(qi)LP2951和80mA LDO線(xian)(xian)性(xing)(xing)穩壓(ya)(ya)器(qi)(qi)NCP562。這些電源方(fang)案(an)具有高(gao)能效(xiao)、低能耗及豐(feng)富的(de)(de)保護特性(xing)(xing)等特點,非常(chang)適合智能電表應(ying)用(yong)。
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