當電(dian)(dian)(dian)網中(zhong)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓或電(dian)(dian)(dian)流波(bo)(bo)(bo)(bo)(bo)(bo)(bo)形非理想的(de)(de)(de)(de)(de)(de)(de)正(zheng)弦波(bo)(bo)(bo)(bo)(bo)(bo)(bo)時，即說明其(qi)(qi)中(zhong)含(han)有(you)(you)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)高于(yu)(yu)50Hz的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓或電(dian)(dian)(dian)流成(cheng)(cheng)分(fen)(fen)(fen)(fen)，我們(men)將(jiang)(jiang)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)高于(yu)(yu)50Hz的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)流或電(dian)(dian)(dian)壓成(cheng)(cheng)分(fen)(fen)(fen)(fen)稱(cheng)(cheng)(cheng)之(zhi)(zhi)為(wei)(wei)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)。當諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)為(wei)(wei)工頻(pin)(pin)(pin)(pin)(pin)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)的(de)(de)(de)(de)(de)(de)(de)整(zheng)(zheng)數(shu)(shu)(shu)(shu)倍(bei)時，我們(men)將(jiang)(jiang)其(qi)(qi)稱(cheng)(cheng)(cheng)之(zhi)(zhi)為(wei)(wei)整(zheng)(zheng)數(shu)(shu)(shu)(shu)次諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)，這類諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)通常用(yong)(yong)次數(shu)(shu)(shu)(shu)來(lai)表示。例如(ru):將(jiang)(jiang)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)為(wei)(wei)工頻(pin)(pin)(pin)(pin)(pin)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)5倍(bei)(250Hz)的(de)(de)(de)(de)(de)(de)(de)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)稱(cheng)(cheng)(cheng)之(zhi)(zhi)為(wei)(wei)5次諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)，將(jiang)(jiang)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)為(wei)(wei)工頻(pin)(pin)(pin)(pin)(pin)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)7倍(bei)(350Hz)的(de)(de)(de)(de)(de)(de)(de)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)稱(cheng)(cheng)(cheng)之(zhi)(zhi)為(wei)(wei)7次諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)，依此類推。大部分(fen)(fen)(fen)(fen)非線性負(fu)荷(he)成(cheng)(cheng)生的(de)(de)(de)(de)(de)(de)(de)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)都是(shi)(shi)整(zheng)(zheng)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo) 當諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)不是(shi)(shi)工頻(pin)(pin)(pin)(pin)(pin)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)的(de)(de)(de)(de)(de)(de)(de)整(zheng)(zheng)數(shu)(shu)(shu)(shu)倍(bei)時，我們(men)將(jiang)(jiang)其(qi)(qi)稱(cheng)(cheng)(cheng)之(zhi)(zhi)為(wei)(wei)分(fen)(fen)(fen)(fen)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)。這類諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)通常直接使(shi)用(yong)(yong)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)來(lai)表示。例如(ru):頻(pin)(pin)(pin)(pin)(pin)率(lv)(lv)為(wei)(wei)1627Hz的(de)(de)(de)(de)(de)(de)(de)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)。含(han)有(you)(you)逆變器的(de)(de)(de)(de)(de)(de)(de)負(fu)荷(he)電(dian)(dian)(dian)流，例如(ru)中(zhong)頻(pin)(pin)(pin)(pin)(pin)爐或者變頻(pin)(pin)(pin)(pin)(pin)器的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)流，通常既含(han)有(you)(you)整(zheng)(zheng)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)又含(han)有(you)(you)分(fen)(fen)(fen)(fen)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)。 用(yong)(yong)于(yu)(yu)檢(jian)(jian)測(ce)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)儀(yi)器就(jiu)叫作諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)檢(jian)(jian)測(ce)儀(yi)，又稱(cheng)(cheng)(cheng)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)分(fen)(fen)(fen)(fen)析儀(yi)絕大部分(fen)(fen)(fen)(fen)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)測(ce)量(liang)儀(yi)器都使(shi)用(yong)(yong)傅立葉(xie)變換(huan)的(de)(de)(de)(de)(de)(de)(de)方法來(lai)進(jin)(jin)行(xing)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)測(ce)量(liang)，使(shi)用(yong)(yong)傅立葉(xie)變換(huan)進(jin)(jin)行(xing)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)分(fen)(fen)(fen)(fen)析的(de)(de)(de)(de)(de)(de)(de)前提(ti)是(shi)(shi)要求被(bei)分(fen)(fen)(fen)(fen)析的(de)(de)(de)(de)(de)(de)(de)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)形必須是(shi)(shi)一個周(zhou)期波(bo)(bo)(bo)(bo)(bo)(bo)(bo)形，也(ye)就(jiu)是(shi)(shi)說，使(shi)用(yong)(yong)傅立葉(xie)變換(huan)只能(neng)測(ce)量(liang)整(zheng)(zheng)數(shu)(shu)(shu)(shu)次諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)。極少數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)檢(jian)(jian)測(ce)儀(yi)可(ke)以(yi)檢(jian)(jian)測(ce)分(fen)(fen)(fen)(fen)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)，測(ce)量(liang)分(fen)(fen)(fen)(fen)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)不能(neng)使(shi)用(yong)(yong)傅立葉(xie)變換(huan)的(de)(de)(de)(de)(de)(de)(de)方法，測(ce)量(liang)分(fen)(fen)(fen)(fen)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)具體(ti)方法隨生產廠商(shang)的(de)(de)(de)(de)(de)(de)(de)不同而有(you)(you)所不同，并且(qie)幾(ji)乎都是(shi)(shi)進(jin)(jin)口的(de)(de)(de)(de)(de)(de)(de)產品，國內開發的(de)(de)(de)(de)(de)(de)(de)可(ke)以(yi)測(ce)量(liang)分(fen)(fen)(fen)(fen)數(shu)(shu)(shu)(shu)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)諧(xie)(xie)波(bo)(bo)(bo)(bo)(bo)(bo)(bo)檢(jian)(jian)測(ce)儀(yi)目前只有(you)(you)一種。
電能質(zhi)量(liang)分析儀可測試(shi)參(can)數(shu)
電(dian)(dian)流真(zhen)有(you)(you)效(xiao)值(zhi)、基(ji)(ji)波(bo)(bo)有(you)(you)效(xiao)值(zhi)、2~50次諧波(bo)(bo)有(you)(you)效(xiao)值(zhi); 電(dian)(dian)壓(ya)真(zhen)有(you)(you)效(xiao)值(zhi)、基(ji)(ji)波(bo)(bo)有(you)(you)效(xiao)值(zhi)、2~50次諧波(bo)(bo)電(dian)(dian)壓(ya)畸變率(lv)、總畸變率(lv); 真(zhen)功(gong)(gong)率(lv)因(yin)數、基(ji)(ji)波(bo)(bo)功(gong)(gong)率(lv)因(yin)數; 基(ji)(ji)波(bo)(bo)視在功(gong)(gong)率(lv)、基(ji)(ji)波(bo)(bo)有(you)(you)功(gong)(gong)功(gong)(gong)率(lv)、基(ji)(ji)波(bo)(bo)無(wu)功(gong)(gong)功(gong)(gong)率(lv); 電(dian)(dian)壓(ya)偏(pian)差; 三相電(dian)(dian)壓(ya)不平衡度; 基(ji)(ji)波(bo)(bo)電(dian)(dian)壓(ya)(電(dian)(dian)流)相角(jiao); 電(dian)(dian)網(wang)頻率(lv); 電(dian)(dian)壓(ya)波(bo)(bo)動(dong)與閃(shan)(shan)變值(zhi)(長時閃(shan)(shan)變值(zhi)(Plt)、短(duan)時閃(shan)(shan)變值(zhi)(Pst));
