Accurate detection method of voltage traveling-wave-based on waveform inversion

Li, Zewen; Lv, Jiajia; Yang, Xi; Xiong, Yi; He, Zhao‐Rong; Liu, Jidian

doi:10.1016/j.epsr.2019.106033

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…Basic Principle: based on the topology of the power grid system, select the appropriate node location to arrange the signal injection and signal acquisition equipment, respectively. By injecting signals (primarily low-frequency) into the system and processing the characteristic signals of faults through techniques such as filtering transformations [68,69], morphological filtering [70,71], wavelet transformations [72,73], S-transform [74], and Hilbert-Huang transform [75], it is possible to analyze and determine the location of the faulted circuit. The advantage of this method is its ability to overcome the influence of parameters, like system distributed capacitance, on detection and localization results.…”

Section: Active Signal Methodsmentioning

confidence: 99%

An Overview of Grounding Design and Grounding Fault Detection and Location Methods for a Multiphase Rectifier Generator Power Supply System

Huang,

Ma,

et al. 2023

Machines

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A multiphase rectifier generator is important power generation equipment in DC power systems in transportation fields such as ships and aviation. Grounding design and grounding fault detection and positioning are key technologies for the safe operation of the power system. This article aims to systematically elaborate on the current research status of its related content. Firstly, the topological structure characteristics of the multiphase rectifier generator power supply system are introduced, the advantages and disadvantages of different grounding methods, position selection, and other design schemes are analyzed, and reasonable suggestions are given for the selection of grounding resistance. Secondly, a brief introduction is given to the research progress on ground fault detection and location in the medium voltage DC integrated power systems of ships, and the characteristics of typical methods for ground fault detection and location in DC power grid systems are summarized. Finally, the future research directions are outlined.

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