An approach to fault location in HVDC lines using mathematical morphology

Triveno, John P.; Dardengo, Victor P.; Almeida, Madson C. de

doi:10.1109/pesgm.2015.7286301

Cited by 15 publications

(12 citation statements)

References 8 publications

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“…The distributed measurement points along the transmission line are synchronized completely to identify the faulty segment and estimate the fault location. Apart from CWT, other fault feature extraction tools, such as S transform [7], empirical mode decomposition (EMD) [8], and mathematical morphology (MM), have been utilized in fault location [9].…”

Section: A Review Of Fault Location Methodsmentioning

confidence: 99%

Combined Line Fault Location Method for MMC–HVDC Transmission Systems

et al. 2020

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A combined algorithm based on traveling wave (TW) theory and time-frequency characteristics is proposed to estimate the DC line fault location in modular multilevel converter-high voltage direct current (MMC-HVDC) systems. The relationship between instantaneous frequency and TW propagation velocity is analysed, and the local voltage signal is utilized to extract fault features. A TW distortion-based scheme is improved to obtain the approximate fault location and accurately detect TW arrival times. The arrival times of the initial TW from the fault point and opposite terminal are determined using intrinsic mode functions under variational mode decomposition. Given the attenuation property of the TW-based method, the Teager energy operator is used to overcome the weakness in fault feature extraction. The instantaneous frequency of the TW front is obtained via ensemble empirical mode decomposition and Hilbert-Huang transform. The fault location is predicted with the detected TW arrival times and corresponding TW propagation velocity. The effectiveness and superiority of this method are verified through simulations in PSCAD/EMTDC and computation in MATLAB.

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Section: A Review Of Fault Location Methodsmentioning

confidence: 99%

Combined Line Fault Location Method for MMC–HVDC Transmission Systems

et al. 2020

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“…The principle of TW based fault location involves signal processing in order to detect the arrival of each wave and calculate its arrival time, polarity, and energy [4]. According to the specific type of signal processing used, several methods are employed including: Continuous Wavelet Transformation (CWT) [4] [5], Discrete Wavelet Transformation (DWT) [6], Mathematical Morphology [7], Natural Frequency Extraction [8], Empirical Mode Decomposition (EMD) [9] and Wavelet Packet Decomposition (WPD) [10]. Even though TW based fault location techniques can be of very high performance, some challenges are frequently cited as drawbacks of such methods.…”

Section: A Travelling Wavesmentioning

confidence: 99%

Assessment of fault location techniques in voltage source converter based HVDC systems

Peng

Tzelepis

Glesk

2017

2017 IEEE Texas Power and Energy Conference (TPEC)

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This paper investigates fault location techniques in high voltage direct current (HVDC) transmission networks utilizing voltage source converters (VSCs). The subject has been extensively researched due to the fault locating actions associated with the supply restoration and the economic loss, and also because of the trending employment of VSC-HVDC transmission systems. However, the fast operation of HVDC protection has made fault localization more challenging as limited measurement data can be extracted. By broadly researching the existing fault locating approaches in such systems, a comprehensive literature review is presented. Then, two selected methods, active impedance method and travelling wave method (using Continuous Wavelet Transformation) are tested. These fault location techniques together with the power system models have been developed using Matlab/Simulink. The results are summarized and systematic comparative analysis of the two fault location techniques is performed

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“…Para a resolução do problema de localização de faltas em redes HVDC é preciso adaptar as técnicas utilizadas em sistemas CA para sistemas de corrente contínua. As técnicas mais utilizadas são baseadas em ondas viajantes [4], [6]- [12]. Este tipo de método aproveita o fato que no momento de ocorrência da falta é gerada uma onda que se propaga pela linha nos dois sentidos.…”

Section: Sistemas Multiterminaisunclassified

“…Em [4] é utilizado um método baseado em ondas viajantes para localização de faltas em um sistema de transmissão CSC-HVDC. Diferentemente da maioria dos métodos que utiliza o sinal de tensão nos terminais, ou a medição de corrente, os autores propõem a utilização de uma sobreposição destes sinais.…”

Section: Localização De Falta Através De Ondas Viajantesunclassified

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Método para detecção e localização de faltas em linhas VSC-HVDC de sistemas multiterminais

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An approach to fault location in HVDC lines using mathematical morphology

Cited by 15 publications

References 8 publications

Combined Line Fault Location Method for MMC–HVDC Transmission Systems

Combined Line Fault Location Method for MMC–HVDC Transmission Systems

Assessment of fault location techniques in voltage source converter based HVDC systems

Método para detecção e localização de faltas em linhas VSC-HVDC de sistemas multiterminais

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