A Traveling-Wave-Based Methodology for Wide-Area Fault Location in Multiterminal DC Systems

Azizi, Sadegh; Sanaye‐Pasand, M.; Abedini, Moein; Hassani, A.

doi:10.1109/tpwrd.2014.2323356

Cited by 208 publications

(110 citation statements)

References 24 publications

(41 reference statements)

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“…However, noise may occur in practical operation. To investigate the influence of noise on the accuracy of the estimated singularity point, 40-db white Gaussian noise is added to the voltage signal [30,31]. As the two cases have similar characteristics, only Case 2 is conducted as an example.…”

Section: Fault Locationmentioning

confidence: 99%

Fault Detection and Location of IGBT Short-Circuit Failure in Modular Multilevel Converters

Jiang¹,

Gong²,

Li³

2018

Energies

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A single fault detection and location for Modular Multilevel Converter (MMC) is of great significance, as numbers of sub-modules (SMs) in MMC are connected in series. In this paper, a novel fault detection and location method is proposed for MMC in terms of the Insulated Gate Bipolar Translator (IGBT) short-circuit failure in SM. The characteristics of IGBT short-circuit failures are analyzed, based on which a Differential Comparison Low-Voltage Detection Method (DCLVDM) is proposed to detect the short-circuit fault. Lastly, the faulty IGBT is located based on the capacitor voltage of the faulty SM by Continuous Wavelet Transform (CWT). Simulations have been done in the simulation software PSCAD/EMTDC and the results confirm the validity and reliability of the proposed method.

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Section: Fault Locationmentioning

confidence: 99%

Fault Detection and Location of IGBT Short-Circuit Failure in Modular Multilevel Converters

Jiang¹,

Gong²,

Li³

2018

Energies

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“…The least squares method [28] can be used, which only needs more than three points. Therefore, some ground-mode velocities can be found based on the simulation model in PSCAD/EMTDC (Manitoba HVDC Research Centre, Winnipeg, Canada) and using the actual parameters of line.…”

Section: The Change Of Traveling Wave Velocity With Fault Distancementioning

confidence: 99%

Asynchronous Fault Location in Transmission Lines Considering Accurate Variation of the Ground-Mode Traveling Wave Velocity

et al. 2017

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This paper proposes a grounding fault location method in transmission lines based on time difference of arrival (TDOA) of ground-mode and aerial-mode traveling waves (TWs). The frequency-dependent characteristics of transmission lines cause different frequencies to have different attenuations and phase lags of different frequency components in traveling waves, which leads to the change of TWs velocities with different propagation distances. Due to these different propagation paths, the wave velocity variations of ground-mode should be considered as a main variable while the velocity of aerial-mode can be seen as a constant factor. A quadratic function that can illustrate the tendency of variation of ground-mode wave velocity is proposed by considering the relation between the wave velocity and fault distance. The least squares method is used to solve the quadratic function of different lines. Combining the quadratic formula and the incident TWs of each mode detected at both terminals of the line, a novel fault location method is proposed. First, according to the maximum and minimum ground-mode velocities, a fault scope can be acquired. Then, more accurate fault scopes and ground-mode velocities can be obtained by iteration computation. Finally, an accurate fault position is acquired when the fault scope is sufficiently small. PSCAD/EMTDC software is used to conduct fault simulations in order to verify the feasibility and accuracy of the method.

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“…This way, several approaches have been proposed since 2008 that try to address the problems related to VSC-HVDC and MTDC systems, offering different solutions that include travelling waves and/or related high-frequency techniques, such as: cross correlation [29], Wavelet Analysis [30][31][32][33] (Figure 1), Fast Fourier Transform and Prony algorithm [26], energy thresholds and a decision tree [28], graph theory and mathematical lemmas [34] , etc. Fig.…”

Section: A High Frequency and Signal Processing Travelling Waves Anmentioning

confidence: 99%

DC protection in modern HVDC networks: VSC-HVDC and MTDC systems

Buigues¹,

Valverde²,

Larruskain³

et al. 2016

REPQJ

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Abstract. Considering the importance that HVDC systems are expected to have in the future of power networks, this paper aims to provide a wide overview of the protection against DC faults. In particular, it analyzes the detection and location techniques that have been proposed to date, focusing on the approaches that are set to be applied in modern HVDC networks, which comprise VSC-HVDC and MTDC systems.

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A Traveling-Wave-Based Methodology for Wide-Area Fault Location in Multiterminal DC Systems

Abstract: Base surge velocity. , x y  Surge velocity through line (x,y). W Set of branch weights in graph G. (x,y) Branch between nodes x and y.

Cited by 208 publications

References 24 publications

Fault Detection and Location of IGBT Short-Circuit Failure in Modular Multilevel Converters

Fault Detection and Location of IGBT Short-Circuit Failure in Modular Multilevel Converters

Asynchronous Fault Location in Transmission Lines Considering Accurate Variation of the Ground-Mode Traveling Wave Velocity

DC protection in modern HVDC networks: VSC-HVDC and MTDC systems

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