定義:豪泰牌變頻串聯諧振試驗裝置/電纜耐壓設備

 當電容電抗XC等于電感電抗XL，即XC=XL中的電壓U，電路與電流同相，電路呈現純電阻.. 這種現象稱為串聯諧振.. 如果電路中發生串聯諧振，則電 路Z的阻抗=√R2XC-XL2=R，電路中總阻抗的最小值，電流將達到最大值。
二、危害性 當發生共振，由于等效電感和電容，電感和電容兩端的RMS電壓等于，即：UL = UC。接收主機檢查：長按“開/關機鍵"開機，屏幕顯 示正常，右上角顯示電量。如果開機后迅速自動關機，則說明電池電量過低，請充電后再使用。器是最新研制出的新型核相產品， 分別用于35、110kV系統，確定兩個電網(發電機組)相位是否相同，以便確定并網。絕緣管采用高性能絕緣材料，核相儀表采用塑料外殼配合活 動支架，可方便地將核相儀表在絕緣管上靈活地改變觀看角度，使用安裝簡便易行。
采用(yong)無線(xian)傳輸(shu)技(ji)術(shu)，操(cao)作(zuo)安(an)全(quan)(quan)可靠(kao)，使(shi)用(yong)方(fang)(fang)便(bian)(bian)，克服了有(you) 線(xian)核相(xiang)(xiang)器(qi)(qi)(qi)的(de)諸(zhu)多缺點，符合(he)國家(jia)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力安(an)全(quan)(quan)工器(qi)(qi)(qi)具(ju)質(zhi)量(liang)監督檢驗測試相(xiang)(xiang)關標準。與(yu)有(you)線(xian)核相(xiang)(xiang)器(qi)(qi)(qi)相(xiang)(xiang)比(bi)，其(qi)主要(yao)優(you)點是去掉了連(lian)接兩(liang)個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網（電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源）兩(liang)端的(de)引 線(xian)，使(shi)用(yong)不受任(ren)何(he)地形和設施構(gou)架的(de)方(fang)(fang)式限制，提高(gao)了安(an)全(quan)(quan)性。本(ben)產品(pin)安(an)全(quan)(quan)可靠(kao)、性能穩定、操(cao)作(zuo)簡便(bian)(bian)是一種理想的(de)核相(xiang)(xiang)儀器(qi)(qi)(qi)。此(ci)外，因(yin)為(wei)相(xiang)(xiang)位相(xiang)(xiang)反，從(cong) 而使(shi)兩(liang)個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)相(xiang)(xiang)互抵消。有(you)效值是在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)(qi)或(huo)(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感器(qi)(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)：UL = UC = XLI0 =ω0LIO=ω0LU/ R其(qi)中ω0L/ R被稱為(wei)諧(xie)(xie)振(zhen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，它代表電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)比(bi)的(de)品(pin)質(zhi)因(yin)數。 即UC / U或(huo)(huo)UL / U. 品(pin)質(zhi)因(yin)數是衡(heng)量(liang)諧(xie)(xie)振(zhen)控(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路設計特性的(de)一個(ge)非常重(zhong)要(yao)技(ji)術(shu)參(can)數。如電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路中電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗越(yue)大，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻越(yue)小，則品(pin)質(zhi)因(yin)數越(yue)高(gao)。因(yin)此(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容或(huo)(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感上的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)值將比(bi) 外加電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)大的(de)多。一般采用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容諧(xie)(xie)振(zhen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路的(de)品(pin)質(zhi)因(yin)數可達(da)幾十甚至幾百。所以(yi)可以(yi)串聯諧(xie)(xie)振(zhen)又叫電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)諧(xie)(xie)振(zhen)。

豪泰牌變頻串聯諧振試驗裝置/電纜耐壓設備在(zai)電(dian)力(li)管理系統中，變頻串聯諧振將會發展 產生企業高(gao)出國家(jia)電(dian)網額(e)定輸出電(dian)壓數倍的(de)過電(dian)壓，對電(dian)力(li)電(dian)子設備的(de)安全環境造成學生很大程度危害。

電(dian)(dian)阻的(de)變(bian)化導(dao)致(zhi)電(dian)(dian)路(lu)(lu)模式的(de)變(bian)化。顯示(shi)串(chuan)聯諧振(zhen)裝置曲線和電(dian)(dian)路(lu)(lu)的(de)Q值的(de)大致(zhi)視圖。在w=0,應(ying)用(yong)于電(dian)(dian)路(lu)(lu)的(de)電(dian)(dian)壓不會隨著時(shi)(shi)間(jian)的(de)推移而(er)改變(bian)，因此電(dian)(dian)路(lu)(lu)中(zhong)沒有電(dian)(dian)流。當(dang)頻率從 0 變(bian)為(wei)電(dian)(dian)抗時(shi)(shi)，它是(shi)耐受性的(de)，并且更(geng)改為(wei) 0。因此，電(dian)(dian)流從 0 增(zeng)(zeng)加到最大諧振(zhen)值，電(dian)(dian)壓和電(dian)(dian)流之(zhi)間(jian)的(de)相角從 -p/2 更(geng)改為(wei) 0。當(dang)頻率從to更(geng)改時(shi)(shi)，產(chan)生的(de)電(dian)(dian)抗從 0 增(zeng)(zeng)加，并且是(shi)感性的(de)。

結(jie)果(guo)，電(dian)流(liu)從最大值減小到(dao)0，角度 j 從0增大到(dao) p/2。電(dian)壓與電(dian)流(liu)成比例(li)變化(hua)。

就電(dian)(dian)(dian)感兩端(duan)的電(dian)(dian)(dian)壓而(er)言，這兩個因素(su)都(dou)取決于(yu)頻(pin)率。當w=0電(dian)(dian)(dian)阻(zu)時，電(dian)(dian)(dian)流I=0，因此。當頻(pin)率從(cong)0變(bian)為(wei)時，兩個因素(su)都(dou)會(hui)增(zeng)加。隨著(zhu)頻(pin)率的進(jin)一(yi)步增(zeng)大，電(dian)(dian)(dian)流I減小，但由(you)于(yu)wL的增(zeng)大，電(dian)(dian)(dian)壓繼續增(zeng)大。分析表明，對(dui)于(yu)有Q因子(zi)的電(dian)(dian)(dian)路(lu)，其增(zeng)加量不斷達到U值(zhi)，對(dui)于(yu)有Q因子(zi)的電(dian)(dian)(dian)路(lu)，電(dian)(dian)(dian)壓在某(mou)一(yi)特定頻(pin)率達到最大，然(ran)后下降。

因(yin)(yin)此。現在(zai)，讓我們可(ke)以考(kao)慮進行串聯諧振電(dian)容器兩端的(de)(de)電(dian)壓對(dui)(dui)頻率的(de)(de)依(yi)賴性。因(yin)(yin)此，當w=0時，電(dian)路中(zhong)沒有(you)工作電(dian)流(liu)。隨(sui)(sui)著(zhu)w從零開始不斷增加(jia)，它(ta)連續減(jian)小。分析研究表明(ming)，對(dui)(dui)于(yu)(yu)企業具(ju)有(you)Q因(yin)(yin)子的(de)(de)電(dian)路，電(dian)壓會(hui)持續發(fa)展下降，首(shou)先，由(you)于(yu)(yu)不同電(dian)流(liu)I 的(de)(de)增加(jia)，電(dian)壓會(hui)上(shang)升(sheng)，并(bing)在(zai)一(yi)些特定使(shi)用頻率下達到(dao)最大值(zhi)，然后逐漸下降。在(zai)電(dian)壓的(de)(de)降低成(cheng)本隨(sui)(sui)著(zhu)網絡頻率的(de)(de)增加(jia)開始于(yu)(yu)中(zhong)國一(yi)個相對(dui)(dui)較低的(de)(de)頻率，由(you)于(yu)(yu)我國連續地減(jian)小。

等于零，所以(yi)如果如前所述。電(dian)(dian)流和(he)(he)頻率(lv)關系曲線(xian)顯示該電(dian)(dian)路(lu)具有“選擇性(xing)特性(xing)"。電(dian)(dian)纜(lan)變頻串聯諧(xie)(xie)振(zhen)(zhen)(zhen)試驗裝置電(dian)(dian)路(lu)在(zai)其共振(zhen)(zhen)(zhen)頻率(lv)的頻率(lv)對電(dian)(dian)流的阻抗最小。串聯諧(xie)(xie)振(zhen)(zhen)(zhen)電(dian)(dian)路(lu)的選擇特性(xing)廣泛應用于通信和(he)(he)無線(xian)電(dian)(dian)工程中，諧(xie)(xie)振(zhen)(zhen)(zhen)模(mo)(mo)式(shi)是其正常(chang)工作模(mo)(mo)式(shi)。相反，在(zai)沒有提(ti)供諧(xie)(xie)振(zhen)(zhen)(zhen)模(mo)(mo)式(shi)的器(qi)件中，諧(xie)(xie)振(zhen)(zhen)(zhen)是不可(ke)取的，因為在(zai)線(xian)圈和(he)(he)電(dian)(dian)容器(qi)上產生的表觀電(dian)(dian)壓可(ke)能對絕緣有危險。