當電(dian)(dian)力系統中的負載(zai)具有儲能(neng)(neng)元件的時候，就會有無(wu)功功率產生，像電(dian)(dian)容、電(dian)(dian)感都是使用普遍(bian)的儲能(neng)(neng)元件。電(dian)(dian)阻負載(zai)消(xiao)耗(hao)(hao)的有功功率將電(dian)(dian)能(neng)(neng)轉(zhuan)換(huan)(huan)成為熱能(neng)(neng)，或(huo)者進一步轉(zhuan)換(huan)(huan)成其(qi)他(ta)形式。而電(dian)(dian)感和電(dian)(dian)容并不實(shi)際消(xiao)耗(hao)(hao)能(neng)(neng)量，在一個(ge)周期內(nei)會先將電(dian)(dian)能(neng)(neng)轉(zhuan)換(huan)(huan)成磁場能(neng)(neng)儲存起來，再釋放出來，返回(hui)電(dian)(dian)源(yuan)。

變壓(ya)器無功補償的(de)諧(xie)波放大(da)問題解決辦(ban)法

繼電器(qi)與(yu)交(jiao)流(liu)接(jie)觸器(qi)相配合組成(cheng)漏電保(bao)護(hu)裝置，適(shi)用(yong)于(yu)電源系統(tong)中(zhong)性點直接(jie)接(jie)地，低(di)壓（380、220V）配電系統(tong)中(zhong)，作間(jian)接(jie)接(jie)觸保(bao)護(hu)。在線(xian)路漏電流(liu)很(hen)小的場合，當其它保(bao)護(hu)失敗時，漏電保(bao)護(hu)裝置提(ti)供直接(jie)觸保(bao)護(hu)。安全(quan)、省(sheng)電、方便、抗擊(ji)。

為此，對無功補(bu)償(chang)(chang)功率(lv)較(jiao)大的電(dian)(dian)容(rong)器(qi)，如(ru)需接在電(dian)(dian)源進線(xian)側，則應(ying)對電(dian)(dian)容(rong)器(qi)另外加(jia)控制開關，在電(dian)(dian)動機停(ting)運時予以切除。就地(di)補(bu)償(chang)(chang)的電(dian)(dian)容(rong)器(qi)不(bu)宜采(cai)用(yong)普通電(dian)(dian)力電(dian)(dian)容(rong)器(qi)：推廣就地(di)補(bu)償(chang)(chang)技術時，不(bu)宜直接使用(yong)普通油浸紙(zhi)質(zhi)電(dian)(dian)力電(dian)(dian)容(rong)器(qi)，因(yin)為其(qi)自愈功能很差，使用(yong)中可能產生(sheng)性擊穿(chuan)，甚至引起爆炸，危及人身安全。 應(ying)用(yong)選型需要考慮的因(yin)素