电网构成对偏磁直流分布作用特征分析  

Analysis of the Action Characteristics of Power Grid Composition on Magnetic Bias DC Distribution

作　　者：赵艳飞 蓝东亮 吴影 王亮 吴伟丽[4] ZHAO Yanfei;LAN Dongliang;WU Ying;WANG Liang;WU Weili(Zhejiang Datang Wushashan Power Generation Co.,Ltd.,Ningbo Zhejiang 315100,China;East China Electric Power Test Research Institute,China Datang Group Science and Technology Research Institute Co.,Ltd.,Hefei 230088,China;Anhui Zhengguang Electric Power Technology Co.,Ltd.,Hefei 230088,China;Xian University of Science and Technology,Xian 710054,China)

机构地区：[1]浙江大唐乌沙山发电有限责任公司,浙江宁波315100 [2]中国大唐集团科学技术研究总院有限公司华东电力试验研究院,安徽合肥230088 [3]安徽正广电电力技术有限公司,安徽合肥230088 [4]西安科技大学,陕西西安710054

出　　处：《佳木斯大学学报（自然科学版）》2024年第9期37-40,共4页Journal of Jiamusi University：Natural Science Edition

基　　金：“十四五”民用航天技术预先研究项目(030302)。

摘　　要：高压直流输电引起的变压器直流偏磁现象会对交流电网造成不利影响影响,研究交流电网电压等级、结构等因素对偏磁直流分布的作用机理与特征,能够为治理措施提供理论参考。基于复杂网络理论和变电站偏磁直流计算模型,分析了不同电压等级电网对系统中性点直流分布的贡献与作用特征,研究了中性点直流分布对不同电压等级电网的敏感性,最后,以多电压等级电力系统为例,验证了上述理论分析结论。研究结果可为规避与治理变压器直流偏磁风险提供理论支撑。The DC magnetic bias phenomenon of transformers caused by HVDC transmission will adversely affect the AC power grid.Studying the mechanism and characteristics of AC grid voltage level,structure and other factors on the distribution of DC magnetic bias can provide a theoretical reference for governance measures.Based on the complex network theory and the calculation model of DC magnetic bias in substation,the contribution and function characteristics of different voltage levels of the power grid to the DC distribution of the system neutral point are analyzed,and the sensitivity of the neutral point DC distribution to different voltage levels of the power grid is studied.Finally,the multivoltage level power system is taken as an example to verify the above theoretical analysis conclusion.The research results can provide theoretical support for avoiding and controlling the risk of transformer DC bias magnetic.

关 键 词：电网结构 中性点直流 作用特征 贡献 

分 类 号：TM714[电气工程—电力系统及自动化]