220kV同塔雙回輸電線路復(fù)合絕緣子的操作和雷電沖擊放電特性
[Abstract]:Lightning trip accidents often occur in composite insulators running on high voltage transmission lines in the lightning area of southern China. It is considered that the main reason is that the lack of dry arc distance configuration of composite insulators in individual areas leads to the low lightning withstand voltage. For this reason, 220 kV double circuit transmission line tower is used to simulate the true tower window, and the simulated conductors are installed. The operation shock and lightning shock tests are carried out on the composite insulators with different dry arc distances in the upper, middle and lower phases, and the 50% discharge voltage data and fitting curves are given statistically. The results show that for every increase of 0.15m in the dry arc distance of the composite insulator, the 50% discharge voltage of the operating shock increases by 54 脳 65 kV, lightning impulse 50% discharge voltage increases 80 脳 84 kV; with simulated tower window, and the lightning impulse 50% discharge voltage of the composite insulator unit dry arc distance is about 5.6% higher than that without the tower window. The research results can provide a reference for the selection of composite insulators for transmission lines, especially for transmission lines in multi-minefield areas.
【作者單位】: 清華大學(xué)深圳研究生院;南方電網(wǎng)公司物資部;武漢大學(xué)電氣工程學(xué)院;中國電力科學(xué)研究院;廣東電網(wǎng)公司佛山供電局;
【基金】:國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)(2009CB724503) 廣東電網(wǎng)公司科技項目~~
【分類號】:TM216
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【共引文獻】
相關(guān)期刊論文 前10條
1 束洪春;曹璞t,
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