临界阻抗法在配电网谐波源探测中的应用

LIU Xiuling; WANG Hongrui; WANG Yongqing; CHEN Chaoying

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临界阻抗法在配电网谐波源探测中的应用

更新时间：2025-08-13

- 临界阻抗法在配电网谐波源探测中的应用
- Automation of Electric Power Systems Vol. 31, Issue 14, Pages: 76-80(2007)
- 作者机构：
  
  1. 河北大学电子信息工程学院,河北省,保定市,071002
  2. 天津大学,天津市,300072
- 作者简介：
- 基金信息：
- DOI：
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- Published：2007
- 稿件说明：
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LIU Xiuling, WANG Hongrui, WANG Yongqing, et al. [J]. Automation of electric power systems, 2007, 31(14): 76-80.
DOI：

LIU Xiuling, WANG Hongrui, WANG Yongqing, et al. [J]. Automation of electric power systems, 2007, 31(14): 76-80. DOI：

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。

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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