Single Pole-to-Ground Fault Analysis of MMC-HVDC Transmission Lines Based on Capacitive Fuzzy Identification Algorithm

Hongchun Shu, Na An, Bo Yang, Yue Dai and Yu Guo
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Hongchun Shu: Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
Na An: Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
Bo Yang: Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
Yue Dai: Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
Yu Guo: Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China

Energies, 2020, vol. 13, issue 2, 1-18

Abstract: The probability of a single pole-to-ground fault in high voltage direct current (HVDC) transmission lines is relatively high. For the modular multilevel converter HVDC (MMC-HVDC) systems, when a single pole-to-ground fault occurs, the fault current is small, and it is difficult to identify the fault quickly. Through a detailed analysis of the characteristics of the single pole-to-ground fault of the MMC-HVDC transmission line, it is found that the single pole-to-ground fault has obvious capacitance-related characteristics, and the transient process after the single pole-to-ground fault is the discharge process of the distributed capacitance of the line. However, other faults do not have such obvious capacitance-related characteristics. Based on such feature, this paper proposes a novel capacitive fuzzy identification method to identify the single pole-to-ground fault. This algorithm can effectively identify both the fault of single pole-to-ground and the fault pole, which can contribute to the large database of the future smart grid.

Keywords: modular multilevel converter; HVDC transmission lines; single pole-to-ground fault; capacitive fuzzy identification (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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