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</li> </ul> </div> </div></div> <div id="f0kbceeioz" class="inpage_right"> <div id="f0kbceeioz" class="mbx2"><a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 2018-09-23</div> <div id="f0kbceeioz" class="inpage_content"> <div id="f0kbceeioz" class="nr_main_box"> <h1 class="inside_rnewtil">串聯(lián)諧振裝置的優(yōu)點及操作注意事項</h1> <div id="f0kbceeioz" class="inside_rnewtime">點擊次數(shù)：1575 更新更新時間：2018-09-23</div> <div id="f0kbceeioz" class="inside_rnewcon"><p>一、串聯(lián)諧振裝置的優(yōu)點及操作注意事項 </p><p>應用串聯(lián)諧振裝置能夠很好地保護被試驗設備，降低風險，主要表現(xiàn)在以下幾方面： </p><p>1 串聯(lián)諧振是一種諧振式的電流濾波電路，對于電源電壓的波形畸變，串聯(lián)諧振能夠有效改善并同時獲得正弦電壓波形，有效地防止諧波的尖峰對被試設備的傷害； </p><p>2 使用試驗變壓器時，如果電流擊穿被試驗設備，電流會立刻大幅度的上升，嚴重的損壞被試驗設備。 </p><p>3 勵磁變壓器的主要特點就是電壓和容量小，僅僅是被試驗設備的 1/Q，體積小、重量輕、安全可靠的設備非常適用于現(xiàn)場試驗，因此，串聯(lián)諧振裝置是高壓、耐壓試驗設備的主要選擇。由于諧振產(chǎn)品設備大多都是高壓設備，工作人員一定要注意操作安全，使用前認真閱讀熟悉說明書，操作過程中嚴格按照相關標準和規(guī)定進行作業(yè)，注意操作安全距離，認真仔細的正確連接各聯(lián)結(jié)線。 </p><p> </p><p>二、串聯(lián)諧振裝置的應用 </p><p>1 GIS 交流耐壓試驗的應用 </p><p>氣體絕緣開關設備GIS是把斷路器、隔離開關、電壓互感器、電流互感器、避雷器等組合在一起并以SF6氣體絕緣的電力設備，GIS一般由2～18個間隔組成，試驗中每一間隔相當于一個電容器，對GIS進行耐壓試驗相當于對這個電容進行耐壓試驗。某變電站220kV GIS為雙母線單母聯(lián)接線，1個主變進線間隔，4個220kV出線間隔，1個母聯(lián)間隔，2個PT間隔。由于母線避雷器和母線電壓互感器并聯(lián)組合在PT間隔，母線避雷器不能進行交流耐壓試驗，因此進行交流耐壓前，不能安裝避雷器，待交流耐壓試驗完成后，再安裝。規(guī)程要求母線電壓互感器的交流耐壓試驗頻率不能低于100Hz,如果GIS所有電氣設備一起進行交流耐壓試驗，電容量很大，試驗頻率將低于100Hz。受試驗條件與設備的限制，早年的氣體絕緣設備都是沒有經(jīng)過嚴格正規(guī)的現(xiàn)場耐壓試驗，由事故統(tǒng)計數(shù)據(jù)也可以發(fā)現(xiàn)絕緣設備發(fā)生的事故率*。因此，在氣體絕緣設備的安裝現(xiàn)場必須進行耐壓試驗，以確保氣體絕緣設備能夠安全、穩(wěn)定、可靠地運行。 </p><p>2 電纜設備試驗中的應用 </p><p>在大電網(wǎng)的會議的建議導則中，提出了運用諧振試驗系統(tǒng)進行絕緣電纜的高壓試驗，并在總結(jié)報告中指出了三點： </p><p>a)由于直流電場強度按電阻率分布,而電阻率受溫度等影響較大,同時耐壓試驗過程中,終端頭的外部閃絡引起的行波可能造成絕緣損壞。 </p><p>b)直流耐壓試驗在很高電壓下,難以檢出相間的絕緣缺陷。 </p><p>c)直流電壓本身容易在電纜內(nèi)部集起空間電荷,引起電纜附件沿絕緣閃絡,因波過程還會產(chǎn)生過電壓,這些現(xiàn)象迭加在一起,使局部電場增強,容易形成絕緣弱點,在試驗過程中可能導致絕緣擊穿,并可能在運行中引起事故。 </p><p>不少電纜在直流耐壓試驗中運行不久，常常會出現(xiàn)絕緣擊穿、正常運行的電纜被嚴重損壞的情況。交流耐壓試驗的電場分布與實際的運行情況極其吻合，所以對電纜的試驗比較有效。一般的電纜電容量和試驗電流比較大，電感調(diào)節(jié)非常麻煩且其設備體積巨大，不易操作，而諧振試驗設備體積小，靈活性強，易于操作。因此，在電纜現(xiàn)場進行交流耐壓試驗時，更多的是使用串聯(lián)諧振裝置。 </p></div> <div id="f0kbceeioz" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-1644147.html">串聯(lián)諧振試驗裝置針對110kv電力變壓器短路故障的案例</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-1644145.html">淺談串聯(lián)諧振裝置的試驗方法及電力應用</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="f0kbceeioz" id="z_Footer"> <div id="f0kbceeioz" class="pz_down"> <div id="f0kbceeioz" class="w_1200"> <div id="f0kbceeioz" class="footT"> <div id="f0kbceeioz" class="footAddr"> <div id="f0kbceeioz" class="footTit">上?？档请姎饪萍加邢薰?/div> <div id="f0kbceeioz" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot1.png">地址：上海市普陀區(qū)金通路1118弄6號</div> <div id="f0kbceeioz" class="dAddr"><img 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