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隔離開關

隔離開關運行中異常現象的處理

發布日期:2022-10-25 點擊率:50

  隔離開關運行中發生異常時,首先應加強監視,有必要和可能時立即降低負荷,直到采取措施消除隱患為止。如果隔離開關裝在母線上,則母線應盡可能停止運行。例如,將負荷轉移到其他母線,以使該母線退出運行。

  如果母線停止運行可能造成較大經濟損失,則考慮采取帶電作業方式進行搶修,如擰緊已松動的緊固件等。通常,只有在萬不得已的情況下,才能采取將隔離開關臨時短接的應急措施.

  如果出現過電壓而發生閃絡、放電以及對地擊穿等嚴重情況,應立即停電或采取帶電作業方式進行處理.

  運行中的隔離開關出現以下異常現象,應迅速加以處理,以免故障擴大:①緊固件松動;②絕緣子因外部創傷、膠合劑老化而松動;③絕緣子上嚴重積垢;④合閘不嚴或合閘不到位;⑤因接觸不良溫升過高。

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