Single‐pole fault protection for
            <scp>MMC‐HVDC</scp>
            transmission line based on improved
            <scp>transient‐extracting</scp>
            transform

Liu, Yiqing; Guo, Haijuan; Zhu, Guangbin; Yu, Gang

doi:10.1002/2050-7038.13254

Cited by 2 publications

(1 citation statement)

References 28 publications

(44 reference statements)

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“…That is to say, the time-varying characteristics of travelling wave frequency change can be accurately displayed. The theoretical deduction is as follows [12].…”

Section: A Introduction To Tetmentioning

confidence: 99%

Transient Extraction Transform Based Fault Location Method with Enhanced Accuracy

Lai

Tong

Tang

et al. 2022

2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)

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The fast determination of internal or external fault for the VSC-MTDC is essential for its safety and continuous operation. As very limited time is permitted in an internal fault, transient-based protection elements are widely applied to locate the fault in a very small-time window. However, with such a short time window, location methods based on the wavelet transform or the mathematical morphology show limited performance balancing the resolution in the time and frequency domains. In recent years, there has been a novel time-frequency domain analysis method, naming the transient extraction transform (TET), with high accuracy in both domains. In this paper, a TET-based fast fault-location method is proposed with enhanced accuracy. Comparison studies are made to highlight the performance of such a method against internal faults for the VSC-MTDC.

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“…That is to say, the time-varying characteristics of travelling wave frequency change can be accurately displayed. The theoretical deduction is as follows [12].…”

Section: A Introduction To Tetmentioning

confidence: 99%

Transient Extraction Transform Based Fault Location Method with Enhanced Accuracy

Lai

Tong

Tang

et al. 2022

2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)

View full text Add to dashboard Cite

show abstract

Research on online monitoring and anti-dance technology of transmission line dance based on wide-area information transmission

An,

Wei,

Tang

et al. 2023

Applied Mathematics and Nonlinear Sciences

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This paper diagnoses the transmission line dancing situation based on the wide-area traveling wave information transmission and dancing mechanism. The characteristics of the wide-area initial traveling wave propagation are analyzed, and the traveling wave information of transmission line dancing is analyzed using wavelet transform. Measure the voltage traveling wave energy distribution for online monitoring and diagnosis of transmission lines. To study the dancing amplitude of transmission lines, a finite element analysis model is created. The detuned pendulum anti-dancing device is designed, the detuned pendulum dynamics equation is constructed, and the critical wind speed leading to transmission line dancing is investigated by the theoretical equation method and the stability theory method. Through the empirical analysis method, the transmission line dance monitoring and the anti-dance effect are analyzed. The experiments show that when the transmission line dances at a slower speed, the online monitoring method based on wide-area information monitors the motion of the target spacer bar between two neighboring frames between [1,3], and the processing speed is 138.2 frames per second faster than the other techniques, which is successful in tracking the dancing target of the transmission line. In the anti-dance test, before the anti-dancer was added, the transmission line amplitude reached 12,12m/s from the beginning at a wind speed of 18m/s and 14m/s to provoke dance. After the installation of the anti-dancer, the amplitude is maintained between [0,1] in most cases, and the anti-dancer has a good anti-dance effect.

show abstract

Single‐pole fault protection for MMC‐HVDC transmission line based on improved transient‐extracting transform

Cited by 2 publications

References 28 publications

Transient Extraction Transform Based Fault Location Method with Enhanced Accuracy

Transient Extraction Transform Based Fault Location Method with Enhanced Accuracy

Research on online monitoring and anti-dance technology of transmission line dance based on wide-area information transmission

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