共轭矢量法在电力电子化系统非对称故障分析中的应用

IF 6.9 2区工程技术 Q2 ENERGY & FUELS

CSEE Journal of Power and Energy Systems Pub Date : 2024-02-14 DOI:10.17775/CSEEJPES.2023.04790

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

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引用次数: 0

摘要

随着电力电子资源（PER）的广泛应用，在非对称故障情况下，电压的幅值和频率表现出明显的时变特性。因此，传统的相量模型、阻抗模型和基于电压恒定幅值和频率的对称分量法面临着巨大挑战。因此，本文提出了一种基于共轭矢量的新型非对称故障分析方法，可满足由时变幅值/频率电压激发的网络的建模和分析要求。此外，还提取了非对称故障特征。作为应用，根据故障特征提出了故障相位识别（FPI）策略。时域仿真和实时数字仿真器验证了非对称故障分析方法和 FPI 策略的正确性和优越性。

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

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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来源期刊

CSEE Journal of Power and Energy Systems Energy-Energy (all)

CiteScore

11.80

自引率

12.70%

发文量

389

审稿时长

26 weeks

期刊介绍： The CSEE Journal of Power and Energy Systems (JPES) is an international bimonthly journal published by the Chinese Society for Electrical Engineering (CSEE) in collaboration with CEPRI (China Electric Power Research Institute) and IEEE (The Institute of Electrical and Electronics Engineers) Inc. Indexed by SCI, Scopus, INSPEC, CSAD (Chinese Science Abstracts Database), DOAJ, and ProQuest, it serves as a platform for reporting cutting-edge theories, methods, technologies, and applications shaping the development of power systems in energy transition. The journal offers authors an international platform to enhance the reach and impact of their contributions.