| 直流输电地中电流对电网设备影响的分析与处理 |
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| 引用本文： | 蒯狄正,万达,邹云.直流输电地中电流对电网设备影响的分析与处理[J].电力系统自动化,2005,29(2):81-82. |
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| 作者姓名： | 蒯狄正 万达 邹云 |
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| 作者单位： | 南京理工大学自动化系，江苏省电力科学研究院有限公司，南京理工大学自动化系 江苏省南京市210014江苏省电力科学研究院有限公司，江苏省南京市210036，江苏省南京市210036，江苏省南京市210014 |
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| 摘 要： | 自2002年12月500 kV 直流输电开始单极对地的调试和运行以来，附近的500kV 交流变电所主变压器出现噪声大幅度上升(上升21dB )等问题。研究分析了直流输电的地中直流电流对交流电网设备影响，包括直流偏磁对变压器和电流互感器、电网谐波对继电保护装置及地中直流对变电所接地网腐蚀的影响，提出了变压器中性点注入反向直流电流限制变压器直流偏磁的措施。
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| 关 键 词： | 直流输电 谐波 直流偏磁 变压器 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
Analysis and Handling of the Impact of Geomagnetically Induced Current Upon Electric Network Equipment in DC Transmission |
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| KUAI Di-zheng.Analysis and Handling of the Impact of Geomagnetically Induced Current Upon Electric Network Equipment in DC Transmission[J].Automation of Electric Power Systems,2005,29(2):81-82. |
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| Authors: | KUAI Di-zheng |
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| Affiliation: | KUAI Di-zheng~ |
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| Abstract: | Since the 500 kV direct transmission project began to be commissioned and put into operation by unipolar earthing inDec.2002,the noises of the 500 kV main transformers in Wunan substation increase significantly.This paper discusses theimpact of geomagnetically induced current upon AC electric network equipment in DC transmission including transformer,current transformer,electric network harmonic wave,relay protection equipment and the corrosion of substation earth screen.The measures to control the DC magnetic biasing in transformers are presented. |
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| Keywords: | DC transmission harmonic DC magnetic biasing transformer |
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