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

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

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With the wide application of power electronized re-sources(PERs),the amplitude and frequency of voltages show sig-nificant 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.

Asymmetrical fault characteristicsconjugate vectors methoddynamic asymmetrical fault analysistime-varying amplitude/frequency

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

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State Key Laboratory of Advanced Electromagnetic Technology(Huazhong University of Science and Technology),Wuhan 430074,China

China Electric Power Research Institute,Beijing 100192,China

National Natural Science Foundation of ChinaYoung Elite Scientists Sponsorship Program by CASTNational Science Foundation for Distinguished Young Scholars of China

521070962021QNRC00152225704

2024

10.17775/CSEEJPES.2023.04790

中国电机工程学会电力与能源系统学报(英文版)
中国电机工程学会

中国电机工程学会电力与能源系统学报(英文版)

CSTPCDEI
ISSN：2096-0042
年,卷(期)：2024.10(4)