Protection Method Based on Wavelet Entropy for MMC-HVDC Overhead Transmission Lines

Weibo Huang, Guomin Luo, Mengxiao Cheng, Jinghan He, Zhao Liu and Yuhong Zhao
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Weibo Huang: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Guomin Luo: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Mengxiao Cheng: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Jinghan He: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Zhao Liu: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Yuhong Zhao: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Energies, 2021, vol. 14, issue 3, 1-20

Abstract: Recent technological developments in modular multilevel converter-based high-voltage direct current (MMC-HVDC) transmission systems have shown significant advantages over the traditional HVDC and two-level voltage source converter (VSC) transmission systems. However, there are a lack of studies on the protection methods for MMC-HVDC overhead lines where the protection method should be able to provide a fast and accurate response and be able to identify lightning strikes. In this paper, a wavelet entropy-based protection method is proposed. Due to the capability of revealing time–frequency distribution features, the proposed protection method combines wavelet and entropy to identify the time–frequency characteristics of different faults. Simulation results show that the proposed method can accurately and quickly determine the types of faults or disturbances with appropriate noise tolerance. In addition, the impact of the ground resistor and fault distance on the performance of the proposed method is studied.

Keywords: wavelet entropy; transient component; MMC-HVDC; protection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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