| 电网中三相电压不对称谐波及负序电流检测方法的研究 |
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| 引用本文： | 杨万开,肖湘宁.电网中三相电压不对称谐波及负序电流检测方法的研究[J].电网技术,1997,21(11):45-48. |
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| 作者姓名： | 杨万开 肖湘宁 |
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| 作者单位： | 华北电力大学北京研究生部!北京清河，100085，华北电力大学北京研究生部!北京清河，100085，华北电力大学北京研究生部!北京清河，100085 |
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| 摘 要： | 大功率电力电子器件的应用，使得电网电流或电压波形产生畸变，进而使系统的电能质量下降。准确检测这些电流分量，正确评价用户电能质量的好坏，已经是非常迫切的问题。为此，本文提出了一种在三相电压不对称情况下，实地检测电网谐波，负序电流分量以其波无功电流分量的方法，并对该检测方法进行了理论分析，实验和仿真证明了所提方法的正确性。
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| 关 键 词： | 谐波 电能质量 三相电压不对称 电网 |
A DETECTING METHOD FOR HARMONIC AND NEGATIVE SEQUENCE CURRENT UNDER UNSYMMETRICAL POWER SYSTEM VOLTAGE |
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| Yang Wankai, Xiao Xiangning, Yan Yihan.A DETECTING METHOD FOR HARMONIC AND NEGATIVE SEQUENCE CURRENT UNDER UNSYMMETRICAL POWER SYSTEM VOLTAGE[J].Power System Technology,1997,21(11):45-48. |
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| Authors: | Yang Wankai Xiao Xiangning Yan Yihan |
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| Abstract: | Application of high power electronic elements in power system makes current and voltage waves distorted and degrades the quality of electric energy. It is urgent to detect the harmonic components and the negative sequence components of current accurately and to evaluate the quality of electric energy correctly. This paper presents an on-line detecting methed for the harmonics in power network,the negative sequence component and the fundamental reactive component of current when the three phase voltages are not symmetrical. The theoretical analysis of this detecting method is carried out. The results from test and simulation prove the validity of this method. |
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| Keywords: | Harmonic Negative current Fundamental reactive curren Quality of electric energy Unsymmetrical voltage |
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