LOW FREQUENCY HEATING FIELD DRY-OUT OF A 750 MVA 500 KV AUTO TRANSFORMER

Elisa Figueroa; Tomasz Kalicki; G. teNyenhuis

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LOW FREQUENCY HEATING FIELD DRY-OUT OF A 750 MVA 500 KV AUTO TRANSFORMER

机译：750 MVA 500 KV自动变压器的低频加热场干燥

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Although the number of confirmed measurements is limited, it has already been concluded by Hydro One that the Low Frequency Heating (LFH) method is superior to the previously used methods. The results of less than one percent remaining moisture allow Hydro One to restore the transformers' overload capabilities without fear of bubble formation.rnIt is believed that future dry-outs will give Hydro One more evidence to support the previous statement. More data, combined with the on-line monitoring of the moisture activity inside the transformer returned to service after the dry-out will further prove the effectiveness of this method.

机译：尽管已确认的测量次数有限，但Hydro Hydro已得出结论，低频加热（LFH）方法优于以前使用的方法。残留水分少于1％的结果使Hydro One可以恢复变压器的过载能力，而不必担心会形成气泡。人们相信，未来的干燥将为Hydro One提供更多的证据来支持上述说法。更多数据，以及在线监测变干后恢复使用的变压器内部的水分活度，将进一步证明该方法的有效性。

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来源
《Electricity Today》 |2009年第1期|8-10|共3页
作者
Elisa Figueroa; Tomasz Kalicki; G. teNyenhuis;
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作者单位

Hydro One Networks Inc (HONI), Ontario, Canada;

Hydro One Networks Inc (HONI), Ontario, Canada;

ABB Transformer Repair and Engineering Services in Brampton, Canada.;

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LOW FREQUENCY HEATING FIELD DRY-OUT OF A 750 MVA 500 KV AUTO TRANSFORMER

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