| 临界阻抗法在配电网谐波源探测中的应用 |
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| 引用本文： | 刘秀玲,王洪瑞,王永青,陈超英. 临界阻抗法在配电网谐波源探测中的应用[J]. 电力系统自动化, 2007, 31(14): 76-80 |
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| 作者姓名： | 刘秀玲 王洪瑞 王永青 陈超英 |
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| 作者单位： | 河北大学电子信息工程学院,河北省保定市071002;天津大学,天津市,300072 |
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| 基金项目： | 河北省教育厅科研项目，河北大学校科研和教改项目 |
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| 摘 要： | 在利用临界阻抗法进行谐波源探测的理论研究的基础上,从电网的实际运行情况出发,着重进行临界阻抗法在配电网中的应用研究.分析了两端源网络谐波阻抗的极性和取值范围与主谐波源的关系.考虑到实际公共耦合点两侧等效阻抗的相角大多不同,采用了牛顿迭代法对临界阻抗进行修正.仿真试验表明修正后的临界阻抗法能够准确识别主谐波源,适于实际应用.
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| 关 键 词： | 谐波 主谐波源 谐波源探测 临界阻抗法 |
| 收稿时间： | 2006-12-18 |
| 修稿时间： | 2007-07-02 |
Application of Critical Impedance Method in Harmonic Source Detecting in Distribution Systems |
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| LIU Xiuling,WANG Hongrui,WANG Yongqing,CHEN Chaoying. Application of Critical Impedance Method in Harmonic Source Detecting in Distribution Systems[J]. Automation of Electric Power Systems, 2007, 31(14): 76-80 |
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| Authors: | LIU Xiuling WANG Hongrui WANG Yongqing CHEN Chaoying |
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| Affiliation: | 1. Hebei University, Baoding 071002, China; 2, Tianjin University, Tianjin 300072, China |
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| Abstract: | The detection of main harmonic sources is one of the important branches of harmonic analysis. On the basis of principles of the critical impedance method, applications of this method in the distribution systems are investigated. The relationship between the main harmonic source and the harmonic impedance properties and its value scopes are analyzed in detail. Considering the equivalent impedance angles at the two sides of the point of common coupling (PCC) are not always the same in the real power system, the Newton iteration method is used to correct the critical impedance. The simulation results show that the improved critical impedance method is able to detect the main harmonic source correctly in the actual applications. |
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| Keywords: | harmonic main harmonic source harmonic source detecting critical impedance method |
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