電(dian)(dian)(dian)池電(dian)(dian)(dian)源(yuan)(yuan)在(zai)很(hen)多地方都會應用到，給很(hen)多電(dian)(dian)(dian)子設備(bei)做(zuo)備(bei)用電(dian)(dian)(dian)源(yuan)(yuan)或(huo)戶外電(dian)(dian)(dian)源(yuan)(yuan)等(deng)，極大(da)的(de)方便了人們的(de)日常(chang)生活，但是我們在(zai)使用電(dian)(dian)(dian)池電(dian)(dian)(dian)源(yuan)(yuan)的(de)時(shi)候，經常(chang)會遇到一些(xie)大(da)小不一的(de)問題，下面主要(yao)講(jiang)一下電(dian)(dian)(dian)源(yuan)(yuan)常(chang)見(jian)問題造成的(de)原因(yin)。

1、電壓的(de)變化(hua)范圍過(guo)大

電(dian)(dian)網(wang)(wang)供(gong)電(dian)(dian)不(bu)足，供(gong)電(dian)(dian)部(bu)門采取降壓(ya)(ya)(ya)供(gong)電(dian)(dian)，或地(di)處偏遠地(di)帶，損耗過多，導致(zhi)電(dian)(dian)壓(ya)(ya)(ya)偏低(di)。電(dian)(dian)網(wang)(wang)用電(dian)(dian)太少，導致(zhi)電(dian)(dian)壓(ya)(ya)(ya)偏高，電(dian)(dian)壓(ya)(ya)(ya)低(di)負載(zai)不(bu)能正常(chang)工作，電(dian)(dian)壓(ya)(ya)(ya)太高，負載(zai)使用壽命縮短，或將負載(zai)燒(shao)毀。

2、波形失真

普遍的波形(xing)失真指標準電(dian)(dian)源波形(xing)的多種諧波。電(dian)(dian)網諧波產生的原因是整流器、UPS電(dian)(dian)源、電(dian)(dian)子調速裝備、熒光(guang)燈系(xi)統、計算機、微波爐、節能燈、調光(guang)器等電(dian)(dian)力電(dian)(dian)子設(she)備和電(dian)(dian)器設(she)備中開關電(dian)(dian)源的使用或二次電(dian)(dian)源本身(shen)自(zi)身(shen)產生。

諧(xie)波(bo)對公用電網(wang)的(de)危害主要(yao)包括(kuo)：

1）使公用電網中的元(yuan)件產(chan)生附(fu)加的諧(xie)波損(sun)耗(hao)，降低了發電、輸變電設備的效(xiao)率，大量的3次諧(xie)波流過(guo)中性線時，會引起線路過(guo)熱甚至(zhi)發生火災；

2）影響各種電(dian)氣設(she)備的正常(chang)工作，除了引起附加(jia)損耗外(wai)，還(huan)可(ke)使電(dian)機產生機械振(zhen)動、噪聲和過(guo)(guo)電(dian)壓，使變壓器(qi)局部嚴重(zhong)過(guo)(guo)熱，使電(dian)容器(qi)、電(dian)纜等設(she)備過(guo)(guo)熱、絕緣老(lao)化、壽命(ming)縮(suo)短(duan)，以致損壞；

3）會(hui)引起(qi)公用電(dian)網(wang)中局(ju)部并(bing)聯諧(xie)振和串聯諧(xie)振，從而(er)使諧(xie)波放(fang)大(da)，使前述的(de)危害大(da)大(da)增加，甚至引起(qi)嚴重事(shi)故；

4）會導致(zhi)繼電(dian)(dian)保護和(he)自(zi)動(dong)裝置誤動(dong)作，并(bing)使(shi)電(dian)(dian)氣(qi)測量(liang)儀表計量(liang)不準確；