變壓器(qi)繞組鐵(tie)心變形(xing)直接或間(jian)接損壞變壓器(qi)，這種故(gu)(gu)障(zhang)隱患(huan)一般常(chang)規的(de)電(dian)(dian)(dian)氣試驗(yan)無法(fa)(fa)診斷(duan)變壓(ya)(ya)器(qi)(qi)(qi)(qi)及(ji)類似結構電(dian)(dian)(dian)力設備的(de)振動(dong)(dong)(dong)在(zai)(zai)線(xian)監測(ce)法(fa)(fa)，國(guo)外最早應用(yong)于(yu)并聯電(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)通(tong)過(guo)在(zai)(zai)線(xian)監測(ce)變壓(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)振動(dong)(dong)(dong)來反映(ying)繞(rao)(rao)組(zu)(zu)(zu)及(ji)鐵(tie)(tie)心(xin)狀況(kuang)是(shi)近幾年的(de)事情(qing)，與FRALVI及(ji)在(zai)(zai)線(xian)或離線(xian)測(ce)量(liang)短(duan)(duan)路電(dian)(dian)(dian)抗等(deng)方法(fa)(fa)相(xiang)比，振動(dong)(dong)(dong)法(fa)(fa)不僅能(neng)檢(jian)測(ce)出故(gu)(gu)障(zhang)繞(rao)(rao)組(zu)(zu)(zu)，還能(neng)檢(jian)測(ce)鐵(tie)(tie)心(xin)狀況(kuang)，且該法(fa)(fa)與電(dian)(dian)(dian)力系(xi)統(tong)沒有電(dian)(dian)(dian)氣連接，安(an)全可(ke)靠，因此應研究了解(jie)電(dian)(dian)(dian)力變壓(ya)(ya)器(qi)(qi)(qi)(qi)在(zai)(zai)空載(zai)(zai)負載(zai)(zai)狀況(kuang)及(ji)遭受短(duan)(duan)路時的(de)器(qi)(qi)(qi)(qi)身(shen)振動(dong)(dong)(dong)特性，其中空載(zai)(zai)振動(dong)(dong)(dong)特性更是(shi)基礎(chu)1原(yuan)理電(dian)(dian)(dian)力變壓(ya)(ya)器(qi)(qi)(qi)(qi)在(zai)(zai)穩(wen)定運行時，硅鋼片(pian)鐵(tie)(tie)心(xin)、繞(rao)(rao)組(zu)(zu)(zu)在(zai)(zai)電(dian)(dian)(dian)磁(ci)場作用(yong)下(xia)產生振動(dong)(dong)(dong)并通(tong)過(guo)變壓(ya)(ya)器(qi)(qi)(qi)(qi)油的(de)傳遞引起器(qi)(qi)(qi)(qi)身(shen)振動(dong)(dong)(dong)變壓(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)表面(mian)的(de)振動(dong)(dong)(dong)與變壓(ya)(ya)器(qi)(qi)(qi)(qi)繞(rao)(rao)組(zu)(zu)(zu)及(ji)鐵(tie)(tie)心(xin)的(de)壓(ya)(ya)緊狀況(kuang)位移及(ji)變形狀態(tai)密切相(xiang)關故(gu)(gu)可(ke)通(tong)過(guo)在(zai)(zai)線(xian)測(ce)量(liang)器(qi)(qi)(qi)(qi)身(shen)振動(dong)(dong)(dong)來監測(ce)繞(rao)(rao)組(zu)(zu)(zu)和鐵(tie)(tie)心(xin)狀況(kuang)。

變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)相(xiang)同分(fen)接位置(zhi)的(de)(de)(de)激磁(ci)電(dian)流(liu)在(zai)鐵心(xin)中(zhong)產生的(de)(de)(de)主磁(ci)通在(zai)空(kong)載(zai)、負載(zai)及負載(zai)變(bian)(bian)化時(shi)(shi)大(da)小(xiao)基本(ben)保持不(bu)變(bian)(bian)，故(gu)(gu)磁(ci)致伸縮引(yin)起的(de)(de)(de)鐵心(xin)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)也基本(ben)保持不(bu)變(bian)(bian)為(wei)得(de)到(dao)(dao)在(zai)不(bu)同分(fen)接位置(zhi)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)鐵心(xin)的(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)特(te)性(xing)，只需測(ce)(ce)(ce)(ce)(ce)(ce)(ce)取(qu)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)空(kong)載(zai)條件下(xia)(xia)的(de)(de)(de)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)因負載(zai)條件下(xia)(xia)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)還包(bao)括負載(zai)電(dian)流(liu)作用(yong)下(xia)(xia)的(de)(de)(de)繞(rao)(rao)組(zu)(zu)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)，故(gu)(gu)繞(rao)(rao)組(zu)(zu)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)可通過(guo)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)取(qu)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)負載(zai)情況(kuang)(kuang)(kuang)下(xia)(xia)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)，與空(kong)載(zai)時(shi)(shi)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)比較來取(qu)得(de)與正(zheng)常振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)相(xiang)比，變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)鐵心(xin)或(huo)繞(rao)(rao)組(zu)(zu)發(fa)(fa)(fa)生位移松動(dong)(dong)(dong)(dong)或(huo)變(bian)(bian)形時(shi)(shi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)的(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)會有較高(gao)頻(pin)成分(fen)出現(xian)，原頻(pin)率處(chu)(chu)的(de)(de)(de)幅(fu)(fu)值(zhi)也會發(fa)(fa)(fa)生變(bian)(bian)化，且位移變(bian)(bian)形越大(da)，高(gao)頻(pin)成分(fen)和幅(fu)(fu)值(zhi)變(bian)(bian)化越大(da)因變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)各(ge)位置(zhi)處(chu)(chu)的(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)特(te)征(zheng)與距離(li)最近的(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)源關系最緊密，根據(ju)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)各(ge)處(chu)(chu)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)取(qu)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)改(gai)變(bian)(bian)的(de)(de)(de)程度可方便地判(pan)斷(duan)出是哪一(yi)部分(fen)繞(rao)(rao)組(zu)(zu)或(huo)鐵心(xin)發(fa)(fa)(fa)生了故(gu)(gu)障(zhang)，即利用(yong)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)法在(zai)線(xian)監測(ce)(ce)(ce)(ce)(ce)(ce)(ce)電(dian)力(li)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)可實(shi)(shi)現(xian)故(gu)(gu)障(zhang)定位故(gu)(gu)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)法用(yong)于在(zai)線(xian)監測(ce)(ce)(ce)(ce)(ce)(ce)(ce)電(dian)力(li)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)時(shi)(shi)，必須(xu)在(zai)空(kong)載(zai)狀(zhuang)況(kuang)(kuang)(kuang)下(xia)(xia)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)量器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)，以得(de)到(dao)(dao)鐵心(xin)的(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)狀(zhuang)況(kuang)(kuang)(kuang)，從(cong)而判(pan)定鐵心(xin)是否發(fa)(fa)(fa)生故(gu)(gu)障(zhang)；繞(rao)(rao)組(zu)(zu)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)必須(xu)從(cong)負載(zai)時(shi)(shi)的(de)(de)(de)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)中(zhong)剔(ti)除掉鐵心(xin)的(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)，從(cong)而判(pan)定繞(rao)(rao)組(zu)(zu)是否發(fa)(fa)(fa)生故(gu)(gu)障(zhang)2試(shi)(shi)驗(yan)(yan)及結(jie)果2.1試(shi)(shi)驗(yan)(yan)對(dui)象(xiang)及測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)接線(xian)模擬實(shi)(shi)驗(yan)(yan)表明變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)系統可以正(zheng)確的(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)量出變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)的(de)(de)(de)加速度信(xin)(xin)(xin)號(hao)（經由電(dian)荷放大(da)器(qi)(qi)(qi)(qi)變(bian)(bian)換(huan)為(wei)與其(qi)(qi)成正(zheng)比的(de)(de)(de)電(dian)壓(ya)(ya)(ya)(ya)信(xin)(xin)(xin)號(hao)），故(gu)(gu)利用(yong)該(gai)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)系統對(dui)一(yi)臺(tai)長(chang)期空(kong)載(zai)試(shi)(shi)驗(yan)(yan)中(zhong)的(de)(de)(de)電(dian)力(li)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)(de)(de)低(di)高(gao)壓(ya)(ya)(ya)(ya)側進行了器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)表面的(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)試(shi)(shi)驗(yan)(yan)時(shi)(shi)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)冷卻系統關閉(bi)該(gai)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)(de)(de)各(ge)參(can)數如下(xia)(xia)：型(xing)號(hao)：OSFPSZI2.2測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)結(jie)果及分(fen)析(xi)(xi)(xi)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)傳(chuan)感(gan)器(qi)(qi)(qi)(qi)用(yong)雙面膠(jiao)分(fen)別(bie)貼于高(gao)、低(di)壓(ya)(ya)(ya)(ya)臂(bei)出口(kou)拐脖下(xia)(xia)方。因C相(xiang)低(di)壓(ya)(ya)(ya)(ya)側接有試(shi)(shi)驗(yan)(yan)電(dian)源，故(gu)(gu)未測(ce)(ce)(ce)(ce)(ce)(ce)(ce)該(gai)變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)試(shi)(shi)驗(yan)(yan)接線(xian)相(xiang)。高(gao)、低(di)壓(ya)(ya)(ya)(ya)側各(ge)相(xiang)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)信(xin)(xin)(xin)號(hao)頻(pin)譜分(fen)別(bie)見3測(ce)(ce)(ce)(ce)(ce)(ce)(ce)后分(fen)析(xi)(xi)(xi)認(ren)為(wei)：變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)空(kong)載(zai)試(shi)(shi)驗(yan)(yan)時(shi)(shi)器(qi)(qi)(qi)(qi)身(shen)(shen)(shen)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)基頻(pin)為(wei)100Hz，并有其(qi)(qi)它(ta)高(gao)次諧(xie)(xie)波(bo)成分(fen)，1000Hz后的(de)(de)(de)諧(xie)(xie)波(bo)基本(ben)衰減到(dao)(dao)0，這與理(li)論分(fen)析(xi)(xi)(xi)的(de)(de)(de)結(jie)果一(yi)致。

高(gao)(gao)低壓(ya)(ya)(ya)(ya)(ya)兩側(ce)(ce)(ce)(ce)器(qi)(qi)(qi)身的(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)動(dong)(dong)(dong)特性(xing)(xing)(xing)不同(tong)(tong)(tong)(tong)(tong)。三相(xiang)(xiang)(xiang)高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)位(wei)(wei)置(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)動(dong)(dong)(dong)信(xin)號(hao)(hao)(hao)頻(pin)(pin)(pin)域(yu)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)幅值(zhi)(zhi)出現在(zai)相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)頻(pin)(pin)(pin)率(lv)位(wei)(wei)置(zhi)(zhi)，即高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)在(zai)400Hz；而(er)低壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)振(zhen)(zhen)動(dong)(dong)(dong)信(xin)號(hao)(hao)(hao)頻(pin)(pin)(pin)域(yu)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)幅值(zhi)(zhi)都在(zai)100Hz高(gao)(gao)低壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)各(ge)(ge)自相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)位(wei)(wei)置(zhi)(zhi)處振(zhen)(zhen)動(dong)(dong)(dong)信(xin)號(hao)(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)基頻(pin)(pin)(pin)及各(ge)(ge)次(ci)諧波的(de)(de)(de)(de)(de)(de)(de)幅度是在(zai)一個數量級上(shang)(shang)，即頻(pin)(pin)(pin)域(yu)特性(xing)(xing)(xing)基本(ben)相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)。但(dan)(dan)從高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)各(ge)(ge)相(xiang)(xiang)(xiang)幅頻(pin)(pin)(pin)特性(xing)(xing)(xing)些許的(de)(de)(de)(de)(de)(de)(de)差(cha)別(bie)可以看出，若主(zhu)(zhu)頻(pin)(pin)(pin)的(de)(de)(de)(de)(de)(de)(de)幅值(zhi)(zhi)相(xiang)(xiang)(xiang)對來說大一些的(de)(de)(de)(de)(de)(de)(de)話，則諧波測試另一臺300MVA電力變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)空載振(zhen)(zhen)動(dong)(dong)(dong)特性(xing)(xing)(xing)發現除高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)主(zhu)(zhu)頻(pin)(pin)(pin)出現在(zai)300Hz外，其(qi)它的(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)動(dong)(dong)(dong)特性(xing)(xing)(xing)與(yu)上(shang)(shang)述變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)規律相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)3結(jie)論變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)器(qi)(qi)(qi)身振(zhen)(zhen)動(dong)(dong)(dong)信(xin)號(hao)(hao)(hao)以100Hz為基頻(pin)(pin)(pin)，并有(you)其(qi)它的(de)(de)(de)(de)(de)(de)(de)諧波成分(fen)。到(dao)1000Hz以后(hou)的(de)(de)(de)(de)(de)(de)(de)諧波幅值(zhi)(zhi)基本(ben)衰減到(dao)0對于高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)或低壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)(ce)(ce)相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)位(wei)(wei)置(zhi)(zhi)而(er)言，器(qi)(qi)(qi)身振(zhen)(zhen)動(dong)(dong)(dong)信(xin)號(hao)(hao)(hao)有(you)著共同(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)規律，即振(zhen)(zhen)動(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)主(zhu)(zhu)頻(pin)(pin)(pin)相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)，各(ge)(ge)相(xiang)(xiang)(xiang)振(zhen)(zhen)動(dong)(dong)(dong)信(xin)號(hao)(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)幅頻(pin)(pin)(pin)特性(xing)(xing)(xing)基本(ben)相(xiang)(xiang)(xiang)似但(dan)(dan)不同(tong)(tong)(tong)(tong)(tong)型號(hao)(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)主(zhu)(zhu)頻(pin)(pin)(pin)可能不同(tong)(tong)(tong)(tong)(tong)由(you)于變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)結(jie)構(gou)、各(ge)(ge)相(xiang)(xiang)(xiang)鐵心和繞組壓(ya)(ya)(ya)(ya)(ya)緊(jin)狀況以及變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)箱體(ti)結(jie)構(gou)等(deng)因素的(de)(de)(de)(de)(de)(de)(de)影響/變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)側(ce)(ce)(ce)(ce)各(ge)(ge)相(xiang)(xiang)(xiang)相(xiang)(xiang)(xiang)同(tong)(tong)(tong)(tong)(tong)頻(pin)(pin)(pin)率(lv)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)動(dong)(dong)(dong)幅值(zhi)(zhi)有(you)一定差(cha)別(bie)，但(dan)(dan)主(zhu)(zhu)頻(pin)(pin)(pin)幅值(zhi)(zhi)相(xiang)(xiang)(xiang)對大時，其(qi)諧波成分(fen)幅值(zhi)(zhi)也略高(gao)(gao)，反之亦然。

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