| ±1100 kV古泉换流站接地极对变压器直流偏磁的影响 |
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| 作者姓名： | 刘从法 殷飞 周楠 魏德军 梁明 |
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| 作者单位： | 中国电力工程顾问集团西南电力设计院有限公司;国网新疆电力有限公司经济技术研究院 |
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| 摘 要： | 文中对±1100 kV古泉换流站接地极周边变压器及变电站地网进行了直流偏磁影响研究,根据周边交流电网中变压器的直流偏磁电流分布进行分析,建立相应的直流电阻网络耦合模型,并结合变压器直流偏磁的耐受电流限值,提出相应的变压器直流偏磁治理范围及直流偏磁治理方案,为华东地区的接地极选址提供参考。
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| 关 键 词： | 接地极电流 变压器 直流偏磁 |
| 收稿时间： | 2018/1/5 0:00:00 |
| 修稿时间： | 2018/2/12 0:00:00 |
Impact on DC Bias Magnetic of the Power Transformers by Grounding Electrode Current of±1100 kV Guquan Convertor Station |
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| Authors: | LIU Congf YIN Fei ZHOU Nan WEI Dejun LIANG Ming |
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| Affiliation: | Southwest Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, Chengdu 610021, China;State Grid Xinjiang Economic Research Institute, Urumqi 830002, China |
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| Abstract: | This paper studies the influence of DC bias on transformer and substation grounding grid around the grounding pole of ±1100 kV Guquan converter station.The DC bias current distribution of transformer in the surrounding AC power grid is analyzed,and the corresponding DC resistance network coupling model is established.At the same time,on the basis of the above research,combined with the withstand current limit of transformer DC bias,the corresponding DC bias control range and DC bias control scheme are proposed,and the reference for the location of grounding electrode in east China is provided. |
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| Keywords: | grounding electrode current transformer DC bias magnetic |
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