本文選題：高壓直流電纜　切入點(diǎn)：聚乙烯　出處：《高電壓技術(shù)》2017年11期

【摘要】：高壓直流電纜絕緣材料的交聯(lián)特性直接影響電纜的運(yùn)行溫度和空間電荷特性,因而主要通過(guò)凝膠質(zhì)量分?jǐn)?shù)、流變行為和熱延伸測(cè)試分別分析了北歐化工(試樣1)和陶氏化學(xué)(試樣2)生產(chǎn)的2種新型高壓直流電纜用XLPE材料交聯(lián)特性的差異,并研究了交聯(lián)效應(yīng)對(duì)材料空間電荷性能和熱力學(xué)性能的影響。結(jié)果表明:試樣2在低交聯(lián)劑添加量的情況下保證了較高的交聯(lián)度,耐熱性較好。對(duì)比2種材料的空間電荷特性,發(fā)現(xiàn)試樣1兩電極附近的同極性注入較明顯,而試樣2內(nèi)部的電荷注入較深。在低場(chǎng)強(qiáng)下,試樣2內(nèi)部積累的電荷量較少;而隨著場(chǎng)強(qiáng)的增加,試樣2內(nèi)部積累的正電荷量變大,且電荷衰減速率較慢。此外,從XLPE的分子結(jié)構(gòu)和結(jié)晶形態(tài)對(duì)2種材料的交聯(lián)機(jī)理進(jìn)行了探討,研究結(jié)果為未來(lái)如何通過(guò)降低交聯(lián)劑含量開發(fā)國(guó)產(chǎn)化高壓直流電纜XLPE材料提供了新思路。
[Abstract]:The cross-linking characteristics of insulating materials for HVDC cables directly affect the operating temperature and space charge characteristics of the cables, and therefore mainly depend on the gel mass fraction. Rheological behavior and thermal extension tests were used to analyze the difference of crosslinking properties of two new XLPE materials for HVDC cables produced by Nordic chemical industry (sample 1) and Dow chemistry (sample 2), respectively. The effects of crosslinking effect on the space charge and thermodynamic properties of the materials were studied. The results showed that the cross-linking degree and heat resistance of sample 2 were higher and better than those of the two kinds of materials under the condition of low amount of crosslinking agent, and the space charge characteristics of the two materials were compared. It was found that the same polarity injection was more obvious in the vicinity of two electrodes in sample 1, but the charge injection was deeper in sample 2. At low field strength, the charge accumulated in sample 2 was less, and with the increase of field strength, the charge accumulation in specimen 2 was lower than that in sample 2. The amount of positive charge accumulated in sample 2 increased and the rate of charge decay was slow. In addition, the crosslinking mechanism of the two materials was discussed from the molecular structure and crystalline morphology of XLPE. The results provide a new idea for the development of home-made XLPE materials for HVDC cables by reducing the content of crosslinker.
【作者單位】： 全球能源互聯(lián)網(wǎng)研究院輸變電技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;西安交通大學(xué)電力設(shè)備電氣絕緣國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFB0900702) 國(guó)家電網(wǎng)公司科技項(xiàng)目(5545DW160013)~~
【分類號(hào)】：TM21

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 歐迪恒;;額定電壓1500V及以下軌道交通用直流電纜的設(shè)計(jì)與加工[J];電線電纜;2013年01期

2 張乒;直流電纜絕緣設(shè)計(jì)[J];高電壓技術(shù);2004年08期

3 儲(chǔ)道;;用計(jì)算機(jī)研究高壓直流電纜內(nèi)電場(chǎng)的分布規(guī)律[J];電線電纜;1984年02期

4 王邦柱;戴少濤;張東;滕玉平;高智遠(yuǎn);;長(zhǎng)距離室溫絕緣超導(dǎo)直流電纜的熱損耗分析[J];低溫與超導(dǎo);2013年11期

5 徐鵬;曾奕;江秀臣;;1．5kV直流電纜在線監(jiān)測(cè)系統(tǒng)研制[J];高壓電器;2006年01期

6 陳錚錚;趙健康;張麗;閔紅;許強(qiáng);;直流電纜上交流分量的計(jì)算及其屏蔽[J];中國(guó)電力;2012年07期

7 曲世光;;高壓直流電纜電場(chǎng)分布的簡(jiǎn)化計(jì)算方法[J];電線電纜;1993年02期

8 王志新;劉t，

本文編號(hào)：1662112