采用长闪络避雷器防止绝缘导线的断线

Long flash arrester to prevent insulated conductor breakage

随着配电线路绝缘导线的应用,由雷电引起的绝缘导线断线已成为配电系统一个新的问题。该文利用俄罗斯PodporkinGV提出采用长闪络避雷器(LFA)提高普通配电线路和输电线路的雷击耐雷水平的思路,提出采用LFA防止10kV中性点不接地配电系统绝缘导线的断线问题。研制了样品,并在清华大学高电压实验室进行了长闪络避雷器与绝缘子的绝缘配合试验,结果表明,长闪络避雷器可以解决10kV中性点不接地配电系统绝缘导线的断线问题。

Insulated conductors on electrical distribution lines are subject to breakage by lightning strikes. A long flash arrester (LFA) was used to protect distribution line insulations from lightning strikes in a 10 kV distribution system with an ungrounded neutral. An arrester sample was used to test the insulation coordination between the insulator and the long flash arrester in the High Voltage Laboratory at Tsinghua University. The tests showed that the long flash arrester can protect the insulated conductor in a 10 kV distribution system with an ungrounded neutral from breakage.