| 基于超定线性方程组模型的电网GIC计算方法研究 |
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| 引用本文： | 刘同同,刘连光,刘静莲.基于超定线性方程组模型的电网GIC计算方法研究[J].华北电力大学学报,2011,38(6):1-5,28. |
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| 作者姓名： | 刘同同 刘连光 刘静莲 |
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| 作者单位： | 华北电力大学电气与电子工程学院,北京,102206 |
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| 基金项目： | 科技部国际合作计划资助项目，苏州市科技发展计划资助项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 为提高电网地磁感应电流(Geomagnetically Induced Current) GIC的计算精度,提出了基于超定线性方程组模型的电网GIC计算方法.该方法充分利用已测量到的GIC数据,将实测数据建立的附加方程与理论计算模型结合起来对GIC进行计算和评估.推导了回路电流法和节点电压法的超定线性方程组模型,并使用...
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| 关 键 词： | 地磁感应电流 超定线性方程组 磁暴 网络模型 最小二乘法 |
Research on algorithm of GIC based on overdetermined linear equations model |
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| LIU Tong-tong
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LIU Lian-guang
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LIU Jing-lian.Research on algorithm of GIC based on overdetermined linear equations model[J].Journal of North China Electric Power University,2011,38(6):1-5,28. |
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| Authors: | LIU Tong-tong LIU Lian-guang LIU Jing-lian |
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| Abstract: | To improve the accuracy of the calculation results of GIC,this paper presents an assessing method of GIC based on overdetermined linear equation model,which makes full use of the measured GIC data and combines the equations established from the measured data with the theoretical calculation model;it derives the overdetermind linear equations model about mesh impedance method and nodal admittance method and solves the overdetermind linear equations with least square method to get the GIC in the neutral of transformers.The method is shown and verified by an example of six meshes impedance model,and compared with traditional model and method.The results demonstrate this method is simple,practical and high reliability and it is more excellent especially on the condition of lacking of accurate raw data. |
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| Keywords: | Geomagnetically induced current overdetermined linear equations magnetic storm network model least sqare method |
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