| 考虑次谐波条件下变压器过励磁保护判据研究 |
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| 引用本文： | 何泽勇.考虑次谐波条件下变压器过励磁保护判据研究[J].电气开关,2014(3):51-52,56. |
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| 作者姓名： | 何泽勇 |
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| 作者单位： | 湖南省电力公司邵阳新邵电力局,湖南邵阳422900 |
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| 摘 要： | 研究了目前变压器过励磁保护的工作原理以及次谐波对变压器铁芯过励磁的影响。现有的变压器过励磁保护忽略了次谐波对变压器铁芯过励磁的影响。提出一种计及次谐波对变压器铁芯过励磁影响的过励磁倍数新算法,采用该算法,将提升变压器过励磁保护的有效性。
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| 关 键 词： | 变压器过励磁 继电保护 次谐波 FFT |
Study on Transformer Overexcited Protection Criterion Under Considering Subharmonic Condition |
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| HE Ze-yong.Study on Transformer Overexcited Protection Criterion Under Considering Subharmonic Condition[J].Electric Switchgear,2014(3):51-52,56. |
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| Authors: | HE Ze-yong |
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| Affiliation: | HE Ze-yong ( Shaoyang Xinshao Electric Power Bureau, Shaoyang 422900, China) |
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| Abstract: | The working principle of transformer overexcited protection and the effect of subharmonic on the tansformer core overexcitation are studied. The existing transformer overexcitation protection neglects the effect of the subharmonic on the transformer core overexcitation. The paper proposes the new overexcitation multiple algorithm of the effect of the subharmonic on the transformer core overexcitation. If the alqorithm is adopted,it will improve effectiveness of the transformer overexcitation. |
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| Keywords: | transformer overexcitation relay protection subharomnic FFT |
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