LXQII-6KV消諧器，LXQII-10KV消諧器，LXQII-35KV消諧器

LXQII型消諧(xie)(xie)器(qi)(qi)(qi)是安(an)裝在(zai)6～35kV中(zhong)(zhong)性(xing)(xing)(xing)(xing)點(dian)不接(jie)(jie)地(di)(di)電(dian)(dian)網中(zhong)(zhong)的電(dian)(dian)磁式(shi)(shi)電(dian)(dian)壓(ya)互感(gan)器(qi)(qi)(qi)（以(yi)下簡(jian)稱PT），壓(ya)變一次(ci)側中(zhong)(zhong)性(xing)(xing)(xing)(xing)點(dian)與地(di)(di)之間的高容量(liang)(liang)非(fei)線性(xing)(xing)(xing)(xing)電(dian)(dian)阻(zu)器(qi)(qi)(qi)，起(qi)阻(zu)尼與限流作用，可以(yi)有(you)(you)效(xiao)保護(hu)PT以(yi)及PT一次(ci)側的高壓(ya)熔絲。變電(dian)(dian)站(zhan)中(zhong)(zhong)性(xing)(xing)(xing)(xing)點(dian)不接(jie)(jie)地(di)(di)系統(tong)(tong)中(zhong)(zhong)，電(dian)(dian)壓(ya)互感(gan)器(qi)(qi)(qi)常因(yin)(yin)鐵(tie)磁諧(xie)(xie)振(zhen)而(er)燒毀或(huo)熔斷熔絲。人們對此做了(le)大量(liang)(liang)的分析(xi)研究，采取了(le)不少措施防止諧(xie)(xie)振(zhen)發(fa)生，然而(er)由于(yu)系統(tong)(tong)結構(gou)的復雜性(xing)(xing)(xing)(xing)和運(yun)行方式(shi)(shi)的靈活，造成運(yun)行參數具有(you)(you)隨(sui)機性(xing)(xing)(xing)(xing)。同時(shi)也因(yin)(yin)現存的各(ge)種消諧(xie)(xie)措施的局限性(xing)(xing)(xing)(xing)，使得只能(neng)在(zai)某些情況下消除諧(xie)(xie)振(zhen)。電(dian)(dian)壓(ya)互感(gan)器(qi)(qi)(qi)飽(bao)和引(yin)起(qi)的鐵(tie)磁諧(xie)(xie)振(zhen)仍然是威脅電(dian)(dian)力(li)系統(tong)(tong)安(an)全(quan)運(yun)行的重要(yao)原因(yin)(yin)。因(yin)(yin)此，有(you)(you)必要(yao)在(zai)分析(xi)中(zhong)(zhong)性(xing)(xing)(xing)(xing)點(dian)不接(jie)(jie)地(di)(di)系統(tong)(tong)鐵(tie)磁諧(xie)(xie)振(zhen)機理的基礎上探討消諧(xie)(xie)措施，以(yi)便在(zai)實際(ji)工作中(zhong)(zhong)有(you)(you)針(zhen)對性(xing)(xing)(xing)(xing)地(di)(di)預防、消除中(zhong)(zhong)性(xing)(xing)(xing)(xing)點(dian)不接(jie)(jie)地(di)(di)系統(tong)(tong)鐵(tie)磁諧(xie)(xie)振(zhen)。

6～35KV中性點不接(jie)(jie)地電(dian)(dian)網中的(de)電(dian)(dian)磁式電(dian)(dian)壓(ya)互感器(qi)，當母線空(kong)載或(huo)出線較少時(shi)，因(yin)合閘充電(dian)(dian)或(huo)在運行時(shi)接(jie)(jie)地故(gu)障消除等(deng)原因(yin)的(de)激發(fa)，會(hui)使電(dian)(dian)壓(ya)互感器(qi)過(guo)(guo)飽(bao)和，則可(ke)能產生鐵磁諧振過(guo)(guo)電(dian)(dian)壓(ya)。出現相(xiang)對地電(dian)(dian)壓(ya)不穩，接(jie)(jie)地指示(shi)誤動作，PT高壓(ya)保險(xian)絲熔(rong)斷等(deng)異常現象，嚴重時(shi)會(hui)導致PT燒毀，繼而引(yin)發(fa)其他事故(gu)。

      LXQII型消諧電阻器，是安裝在6～35kV 電磁式電壓互感器一次繞組Y₀接線中性(xing)(xing)點與(yu)地之間的高(gao)容量非線性(xing)(xing)電(dian)(dian)阻器(qi)，起(qi)阻尼與(yu)限流(liu)的作用。該消諧(xie)電(dian)(dian)阻器(qi)*符合(he)現(xian)行電(dian)(dian)力(li)部標準DL/T 620—1997《交流(liu)電(dian)(dian)氣裝置的過(guo)電(dian)(dian)壓(ya)保護和絕緣配(pei)合(he)》第4.1.5 條中的規定，可(ke)以起(qi)到良好的限制電(dian)(dian)壓(ya)互(hu)感(gan)器(qi)鐵磁(ci)諧(xie)振的效果(guo)。

如果6～35kV電網中性點不接地，母線上Y₀接線(xian)的(de)PT一次(ci)繞組(zu)(zu)，將(jiang)(jiang)成(cheng)為該電網(wang)對(dui)(dui)地*金屬性(xing)通道(dao)。電網(wang)對(dui)(dui)地電容通過(guo)PT一次(ci)繞組(zu)(zu)有一個(ge)充(chong)放電的(de)過(guo)渡過(guo)程。試驗測得(de)此(ci)時常(chang)常(chang)有zui高(gao)(gao)幅值達數安(an)培的(de)工頻(pin)半波涌(yong)流(liu)通過(guo)PT，此(ci)電流(liu)有可能將(jiang)(jiang)PT高(gao)(gao)壓熔(rong)(rong)絲熔(rong)(rong)斷。而安(an)裝了LXQⅡ系(xi)列消諧器后(hou)，這種涌(yong)流(liu)將(jiang)(jiang)得(de)到有效抑制，高(gao)(gao)壓熔(rong)(rong)絲不再因為這種涌(yong)流(liu)而熔(rong)(rong)斷。

LXQII-6KV消諧器，LXQII-10KV消諧器，LXQII-35KV消諧器

消諧器型號：LXQ/RXQ/NLS/GK/QNC高壓消諧器
RXQ-6KV,RXQ-10KV,RXQ-35KV中性點用消諧電阻器
LXQII-6KV,LXQII-10KV,LXQII-35KV壓變中性點用消諧電阻器 
LXQII（D）-6KV,LXQII（D）-10KV,LXQII（D）-35KV弱絕緣型高壓消諧器
LXQIII-6KV,LXQIII-10KV,LXQIII-35KV壓變中性點用消諧電阻器 
LXQIII（D）-6KV,LXQIII（D）-10KV,LXQIII（D）-35KV弱絕緣型高壓消諧器
LXQ2-6KV,LXQ2-10KV,LXQ2-35KV電壓互感器中性點用高壓消諧器 
LXQ2（D）-6KV,LXQ2（D）-10KV,LXQ2（D）-35KV弱絕緣型高壓消諧器
LXQ3-6KV,LXQ3-10KV,LXQ3-35KV電壓互感器中性點用高壓消諧器
LXQ3（D）-6KV,LXQ3（D）-10KV,LXQ3（D）-35KV弱絕(jue)緣(yuan)型高壓消諧器