ACTIVE SERIES ARC FAULT DETECTION METHOD OF INTELLIGENT BUILDINGS DC SYSTEM BASED ON HIGH FREQUENCY INJECTION

Wang Zekun; Gong Chunyang; Bao Jun; Zhu Guozhong; Wang Zhixin

doi:10.19912/j.0254-0096.tynxb.2021-1383

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 398-406. DOI: 10.19912/j.0254-0096.tynxb.2021-1383

ACTIVE SERIES ARC FAULT DETECTION METHOD OF INTELLIGENT BUILDINGS DC SYSTEM BASED ON HIGH FREQUENCY INJECTION

Wang Zekun¹, Gong Chunyang², Bao Jun³, Zhu Guozhong⁴, Wang Zhixin¹

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Abstract

This paper proposes an active series arc fault detection method for intelligent buildings DC system, of which a high frequency current is injected into the DC bus through coil coupling to detect the output response of the current signal on the DC bus. Wavelet transform is used to analyze the characteristic changes and stability of current signal output and input. Develop criteria for identifying arc faults. Based on Matlab/Simulink simulation platform, this paper uses the Cassie arc model to build the simulation circuit, and the corresponding experimental platform is built for verification. The simulation and experimental results show that the detection method proposed in this paper can accurately identify series arc faults in low-voltage DC systems, and effectively reduce the noise of switching devices such as power electronics and the influence of external conditions such as different operating conditions, and verify the effectiveness and robustness of the proposed method.

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PV power / electric fault current / wavelet transform / intelligent building / distributed power generation

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Wang Zekun, Gong Chunyang, Bao Jun, Zhu Guozhong, Wang Zhixin. ACTIVE SERIES ARC FAULT DETECTION METHOD OF INTELLIGENT BUILDINGS DC SYSTEM BASED ON HIGH FREQUENCY INJECTION[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 398-406 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1383

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