Conjugate Vectors Method Applied to Asymmetrical Fault Analysis of Power Electronized Power Systems

Yingbiao Li; Xing Liu; Jiabing Hu; Jianhang Zhu; Jianbo Guo

doi:10.17775/CSEEJPES.2023.04790

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Conjugate Vectors Method Applied to Asymmetrical Fault Analysis of Power Electronized Power Systems

Regular Papers | 更新时间：2026-10-15

- Conjugate Vectors Method Applied to Asymmetrical Fault Analysis of Power Electronized Power Systems
- CSEE Journal of Power and Energy Systems Vol. 10, Issue 4, Pages: 1536-1549(2024)
- 作者机构：
  
  1. State Key Laboratory of Advanced Electromagnetic Technology, Huazhong University of Science and Technology,Wuhan,China
  2. China Electric Power Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2023.04790
  CLC：
- Published：01 July 2024
- 稿件说明：
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Yingbiao Li, Xing Liu, Jiabing Hu, et al. Conjugate Vectors Method Applied to Asymmetrical Fault Analysis of Power Electronized Power Systems[J]. CSEE Journal of Power and Energy Systems, 2024, 10(4): 1536-1549.
DOI：

Yingbiao Li, Xing Liu, Jiabing Hu, et al. Conjugate Vectors Method Applied to Asymmetrical Fault Analysis of Power Electronized Power Systems[J]. CSEE Journal of Power and Energy Systems, 2024, 10(4): 1536-1549. DOI： 10.17775/CSEEJPES.2023.04790.

摘要

Abstract

With the wide application of power electronized resources (PERs)

the amplitude and frequency of voltages show significant time-varying characteristics under asymmetrical faults. As a result

the traditional phasor model

impedance model

and symmetrical components method based on the constant amplitude and frequency of voltages are facing great challenges. Hence

a novel asymmetrical fault analysis method based on conjugate vectors is proposed in this paper which can meet the modeling and analysis requirements of the network excited by voltages with time-varying amplitude/frequency. Furthermore

asymmetrical fault characteristics are extracted. As an application

a faulted phase identification (FPI) strategy is proposed based on the fault characteristics. The correctness and superiority of the asymmetrical fault analysis method and FPI strategy are verified in time-domain simulations and a real-time digital simulator.

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