The final result shows that steep - front wave impulse voltage test plays a very effective part in finding serious faults of the insulator , however , tiny faults are not easy to be found through this method 計(jì)算和試驗(yàn)結(jié)果相一致,結(jié)果表明陡波試驗(yàn)在檢驗(yàn)合成絕緣子嚴(yán)重內(nèi)絕緣故障方面很有效,但對(duì)較輕的故障就不太有效。
The lightning impulse breakdown and steep - front impulse breakdown test of silicone rubber are also performed , which give a reference for other so lid materials . the result of this research also will give a reference to revises the standard of steep - front wave impulse voltage test 為了配合本課題的研究還做了硅橡膠材料的雷電沖擊耐受強(qiáng)度和陡波沖擊耐受強(qiáng)度試驗(yàn),這兩個(gè)試驗(yàn)對(duì)了解其它固體材料的雷電沖擊系數(shù)和伏秒特性也具有參考價(jià)值。
In order to verify the effectiveness of steep - front impulse voltage test in finding the internal faults of composite insulator , some insulators with faults , including conductive channel , semi - conductive channels , airy channel , partial little air bubble that occur separately at different place , are modeled . steep - front wave impulse voltage test is made for these faulty insulator and normal insulator 為了檢驗(yàn)陡波試驗(yàn)對(duì)于發(fā)現(xiàn)合成絕緣子內(nèi)部故障的有效性,分別模擬了絕緣子內(nèi)部不同部位有導(dǎo)電性、半導(dǎo)電性通道,小氣泡,金屬雜質(zhì),長氣泡以及芯棒與護(hù)套間不粘連故障的絕緣子,并從三維靜電場(chǎng)計(jì)算和用不同陡度的陡波試驗(yàn)兩個(gè)方面進(jìn)行了驗(yàn)證。