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行業新聞

總線處理機配電隔離變壓器加油引起局部放電的檢測方法

2022-09-06

  隔離變壓器oil有幾種油基,原則上不能和不同類型的油基混用。新的隔離變壓器oil可能與隔離變壓器box中的油基不一致。

  配電隔離變壓器換料時沒有停電,導致冷油和熱油混合,加速循環油流,隔離變壓器的底水循環到高低壓線圈,造成絕緣短路。

  增加的隔離變壓器油不合格。諧振過電壓是由無功補償不當引起的。配電隔離變壓器容量為100,以減少線路損壞,提高設備利用率。kVA以上應采用無功補償裝置。如果補償不當,總電阻和總感應電阻等于運行線路,運行線路和設備就會產生生鐵磁共振,造成配電隔離變壓器等電氣設備過電壓、過電流燒毀。

  配電隔離變壓器合格避雷器bixu安裝在高低壓側,以減少雷電過電壓。鐵磁諧振過電壓對隔離變壓器高壓線圈或套管的危害。

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