【Key words】 power transformer; DC bias magnetization; system simulation; nonlinear equations; field-circuit coupled; transient eddy current problem; differential equations;
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The result is shown that with the increasing DC bias magnetization, the core losses is also increased which leads to temperature-rising. In the serious condition this will cause the over-heat of local part of core.
在求出直流偏磁量与励磁电流峰值关系的基础上,应用一种基于铁心空载损耗数据的方法,定量分析了在不同等级直流偏磁电流作用下,换流变压器铁心损耗情况,结果表明,随着直流偏磁电流的增加,铁心损耗也会随之增加,这会导致铁心温升上升,严重时会导致铁心局部过热,影响变压器的正常运行。
参考来源 - 大型换流变压器直流偏磁问题的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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