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探讨管型母线的特性

  时间:  2022-10-26    点击:279
      伴(ban)随着我国经济(ji)的(de)(de)髙速发(fa)展(zhan)趋势,全(quan)部社会发(fa)展(zhan)对电(dian)(dian)(dian)(dian)力(li)工程的(de)(de)要求日益扩大。现(xian)阶(jie)段(duan)115kV和(he)220KV变电(dian)(dian)(dian)(dian)站底(di)压(ya)侧(ce)均选用10kV、35kV额(e)定电(dian)(dian)(dian)(dian)压(ya),伴(ban)随着主变容(rong)积的(de)(de)增(zeng)(zeng)加,变电(dian)(dian)(dian)(dian)器底(di)压(ya)侧(ce)三相五线侧(ce)的(de)(de)额(e)定电(dian)(dian)(dian)(dian)压(ya)也在(zai)持续增(zeng)(zeng)加。基本管型母(mu)线从(cong)技(ji)术上(shang)(shang)和(he)构(gou)造上(shang)(shang)愈来愈难(nan)(nan)达(da)到母(mu)线发(fa)烫(tang)(tang)和(he)短路故障电(dian)(dian)(dian)(dian)驱(qu)动力(li)的(de)(de)规定,从(cong)而(er)造成额(e)外耗损(sun)、趋肤效应(ying)指数的(de)(de)扩大,导致截留工作(zuo)能力(li)的(de)(de)降低、电(dian)(dian)(dian)(dian)流量遍布不匀称。尤其是每台主变容(rong)积为180MVA及之上(shang)(shang)时,主变10kV小(xiao)组出线侧(ce)不但有母(mu)线桥自身的(de)(de)电(dian)(dian)(dian)(dian)驱(qu)动力(li)难(nan)(nan)题(ti)、发(fa)烫(tang)(tang)难(nan)(nan)题(ti),也有母(mu)线桥支撑(cheng)绝(jue)缘(yuan)子、钢架构(gou)及其母(mu)线桥周边混凝土上(shang)(shang)柱、基本内的(de)(de)建筑钢筋在(zai)磁场(chang)中(zhong)磁感应(ying)涡旋(xuan)造成的(de)(de)发(fa)烫(tang)(tang)难(nan)(nan)题(ti)。

      管型母线做为矩(ju)(ju)形框(kuang)母(mu)线(xian)(xian)(xian)(xian)(xian)的(de)代替品。管(guan)型(xing)(xing)母(mu)线(xian)(xian)(xian)(xian)(xian)具(ju)备(bei)下列特性:电(dian)(dian)(dian)缆(lan)(lan)载流量大(da)管(guan)型(xing)(xing)母(mu)线(xian)(xian)(xian)(xian)(xian)的(de)行为主体为中(zhong)空(kong)(kong)空(kong)(kong)调铜(tong)管(guan)或铝合金管(guan),表面(mian)积大(da),相对(dui)性基本(ben)矩(ju)(ju)形框(kuang)母(mu)线(xian)(xian)(xian)(xian)(xian),其电(dian)(dian)(dian)导(dao)体表面(mian)电(dian)(dian)(dian)流强度遍(bian)(bian)布匀称(cheng),高额定电(dian)(dian)(dian)压可以达到12000A。绝缘特性好(hao)管(guan)型(xing)(xing)母(mu)线(xian)(xian)(xian)(xian)(xian)选用(yong)密封(feng)性屏蔽掉绝缘方法,机壳接地装置电(dian)(dian)(dian)位差为零,母(mu)线(xian)(xian)(xian)(xian)(xian)表面(mian)静电(dian)(dian)(dian)场遍(bian)(bian)布匀称(cheng),电(dian)(dian)(dian)气设备(bei)绝缘特性强。能够 立即根据缆(lan)(lan)沟和电(dian)(dian)(dian)缆(lan)(lan)线(xian)(xian)(xian)(xian)(xian)隔层。冲(chong)击(ji)韧性高管(guan)型(xing)(xing)母(mu)线(xian)(xian)(xian)(xian)(xian)行为主体容许(xu)地应力为矩(ju)(ju)形框(kuang)母(mu)线(xian)(xian)(xian)(xian)(xian)的(de)4倍,可承担的(de)短路容量大(da),冲(chong)击(ji)韧性高,促(cu)使母(mu)线(xian)(xian)(xian)(xian)(xian)支撑点跨度大(da)可以达到8米。排(pai)热好(hao)、升温低管(guan)型(xing)(xing)母(mu)线(xian)(xian)(xian)(xian)(xian)为中(zhong)空(kong)(kong)电(dian)(dian)(dian)导(dao)体,母(mu)线(xian)(xian)(xian)(xian)(xian)两边开有通风口(kou),內(nei)径风管(guan)能当然产生热空(kong)(kong)气对(dui)流,排(pai)热标准好(hao)对(dui)比基本(ben)母(mu)线(xian)(xian)(xian)(xian)(xian)好(hao)些(xie)。

      耗损(sun)(sun)低管(guan)型母线的(de)(de)(de)外(wai)观设计决策了其(qi)表面趋肤效应指数低,Kf≦1,沟通交流电(dian)(dian)阻(zu)器小,因此母线的(de)(de)(de)输出功率(lv)损(sun)(sun)害(hai)小。化(hua)(hua)学交联(lian)屏蔽(bi)(bi)掉绝缘(yuan)(yuan)母线的(de)(de)(de)绝缘(yuan)(yuan)层(ceng)的(de)(de)(de)介电(dian)(dian)损(sun)(sun)耗小于0.01%。绝缘(yuan)(yuan)原材料(liao)耐(nai)高温指数高化(hua)(hua)学交联(lian)屏蔽(bi)(bi)掉绝缘(yuan)(yuan)管(guan)型母线的(de)(de)(de)主绝缘(yuan)(yuan)原材料(liao)为聚四(si)氟(fu)乙烯,有优质的(de)(de)(de)电(dian)(dian)气设备特(te)性和有机化(hua)(hua)学可(ke)靠性,可(ke)在-200℃~ 200℃中(zhong)一(yi)切正常(chang)工作中(zhong),介电(dian)(dian)损(sun)(sun)耗小、阻(zu)燃性、抗老化(hua)(hua)、相互配合别的(de)(de)(de)绝缘(yuan)(yuan)原材料(liao),商品的(de)(de)(de)使用(yong)期限≧30年。
      
      抗(kang)电气设备(bei)振动工(gong)作(zuo)能(neng)力(li)强(qiang)动平稳(wen)实(shi)验結果表面,工(gong)作(zuo)电压10kV、额定(ding)电压4000A的(de)铜制(zhi)管母,可承担63kA(4s)短路(lu)容量冲击性(xing)。其能(neng)够 立即(ji)将母线(xian)(xian)固定(ding)不(bu)动在钢(gang)架(jia)构上(shang)或混泥(ni)土支撑(cheng)(cheng)架(jia)上(shang),撤销穿墙(qiang)套管和支撑(cheng)(cheng)绝缘子,具备(bei)极强(qiang)的(de)抗(kang)振动工(gong)作(zuo)能(neng)力(li)。不(bu)会受到(dao)自(zi)然环境影响,稳(wen)定(ding)性(xing)高管型母线(xian)(xian)的(de)每相是封闭式(shi)屏(ping)蔽掉(diao)绝缘,內(nei)部(bu)(bu)无精华露造成(cheng),且清除了(le)外部(bu)(bu)湿气,尘(chen)土及(ji)其外在因素所造成(cheng)的(de)接(jie)地装置和两(liang)色短路(lu)故(gu)障(zhang)常见故(gu)障(zhang),运作(zuo)具备(bei)高宽(kuan)比的(de)稳(wen)定(ding)性(xing)。母线(xian)(xian)构架(jia)简要、布局清楚、安裝便捷、维护保养劳动量少。商品一次(ci)安裝取(qu)得成(cheng)功,终生免维护保养。



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