| 直流单极运行对交流变压器的影响 |
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| 引用本文： | 李长益.直流单极运行对交流变压器的影响[J].华东电力,2005,33(1):36-39. |
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| 作者姓名： | 李长益 |
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| 作者单位： | 江苏省电力科学研究院,江苏,南京,210036 |
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| 摘 要： | 超高压直流输电系统运行中地中电流使处于不同地电位的交流变压器中性点之间通过变压器绕组产生直流电流,分析了该直流电流对三相芯式、三相五柱式和三相分体式等不同结构变压器偏磁的影响,并结合实测结果分析了政平直流站对江苏500kV和220kV电网中性点接地运行的变压器的影响,根据有关分析提出了相应的建议。
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| 关 键 词： | 直流输出 直流偏磁 主变噪声 谐波 |
| 文章编号： | 1001-9529(2005)01-0036-04 |
| 修稿时间： | 2004年7月22日 |
Effect of DC monopole operation on AC transformers |
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| LI Chang-yi.Effect of DC monopole operation on AC transformers[J].East China Electric Power,2005,33(1):36-39. |
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| Authors: | LI Chang-yi |
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| Abstract: | In operation of HVDC transmission system, through the transformer winding, the current in the earth forms DC current between the neutral points of AC transformers located in different earth potential. The effects of the DC on the biasing of transformers with different structures such as three-phase core type, three-phase five-pole type and three-phase split type were analyzed. Combining testing results, the effect of the Zhengping DC substation on neutral point earthed transformers in Jiangsu 500 kV and 220 kV grids was analyzed and relevant suggestion was put forward according to related analysis. |
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| Keywords: | DC output DC biasing noise of main transformer harmonic |
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