| 特高压交流系统三绕组自耦变压器非线性模型的研究 |
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| 引用本文： | 岳昊,徐永海,刘颖英,朱永强,肖湘宁.特高压交流系统三绕组自耦变压器非线性模型的研究[J].电工电能新技术,2010,29(3). |
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| 作者姓名： | 岳昊 徐永海 刘颖英 朱永强 肖湘宁 |
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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： | 国家电网公司特高压输电可行性研究项目 |
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| 摘 要： | 建立精确的自耦变压器非线性模型是对1000kV交流输电系统谐波特性进行仿真分析的基础。本文基于单相三绕组自耦变压器的电磁关系,充分考虑激磁阻抗的影响,提出了一种适用于谐波分析、易于仿真实现的单相三绕组自耦变压器的非线性模型,然后分别引入ir-u和il-u瞬时特性曲线来求解激磁阻抗,并详细介绍了曲线的数值模拟方法。结合我国晋东南-南阳-荆门1000kV特高压交流试验示范工程中的主变参数在PSCAD/EMTDC中进行了建模和仿真,证明所建立的模型能够比较准确地反映自耦变压器的饱和特性,为搭建完整的1000kV交流输电系统仿真模型和进行其谐波特性分析提供了必要条件。
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| 关 键 词： | 三绕组自耦变压器 非线性模型 特高压 谐波特性 |
Study of nonlinear model of three-winding autotransformer in ultra high voltage AC transmission system |
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| YUE Hao,XU Yong-hai,LIU Ying-ying,ZHU Yong-qiang,XIAO Xiang-ning.Study of nonlinear model of three-winding autotransformer in ultra high voltage AC transmission system[J].Advanced Technology of Electrical Engineering and Energy,2010,29(3). |
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| Authors: | YUE Hao XU Yong-hai LIU Ying-ying ZHU Yong-qiang XIAO Xiang-ning |
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| Affiliation: | YUE Hao,XU Yong-hai,LIU Ying-ying,ZHU Yong-qiang,XIAO Xiang-ning(School of Electrical , Electronic Engineering,North China Electric Power University,Beijing 102206,China) |
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| Abstract: | Modeling of accurate nonlinear three-winding autotransformer is the basis of harmonic analysis of 1000kV AC transmission system.Based on the electromagnetic relations of single-phase three-winding autotransformer and the effect of excitation impedance,a new model of single-phase three-winding autotransformer used for harmonic analysis and computer simulation is presented.The nonlinear impedance is caculated by the ir-u and il-u curves based on the Urms-Irms magnetization curve and the no-load losses at rate... |
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| Keywords: | three-winding autotransformer nonlinear model ultra high voltage(UHV) harmonic characteristic |
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