Novel traveling wave fault location method for HVDC transmission line based on wavefront frequency

The key of traveling wave (TW) fault location (FL) method is the calculation of TW velocity and the calibration of TW wave head. In order to achieve high-precision FL, detailed transmission line (TL) parameters are needed to accurately calculate the TW velocity. In view of the problem that the exist...

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Bibliographic Details
Published in:Electric power systems research Vol. 234; p. 110598
Main Authors: Zhang, Miao, Wang, Dong, Gao, Houlei, Peng, Fang, Gao, Mengyou
Format: Journal Article
Language:English
Published: Elsevier B.V 01.09.2024
Subjects:
Fault location
Frequency attenuation characteristics
Neural network
S-transform
Wavefront frequency
Fault location
Frequency attenuation characteristics
Wavefront frequency
Neural network
S-transform
ISSN:0378-7796, 1873-2046
Online Access:Get full text
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Summary:The key of traveling wave (TW) fault location (FL) method is the calculation of TW velocity and the calibration of TW wave head. In order to achieve high-precision FL, detailed transmission line (TL) parameters are needed to accurately calculate the TW velocity. In view of the problem that the existing high-precision TWFL methods are highly dependent on the calculation of TW velocity, the paper contributes to following aspects: (i) the mapping relationship between wavefront frequency and fault distance/fault pole is constructed; (ii) a neural network model suitable for FL and fault pole identification is designed, which is optimized by Particle Swarm Optimization (PSO) algorithm and Levenberg–Marquardt (L-M) algorithm; (iii) a complete FL scheme is proposed. In order to verify the FL accuracy of proposed method, an ±800 kV bipolar high-voltage direct-current (HVDC) transmission system model is constructed using PSCAD/EMTDC. According to the simulation results, the errors of FL is less than 0.2 km and the accuracy of fault pole identification is 100%. For the problems of fault type, fault resistance and noise, the proposed method shows high robustness. •The relationship between frequency and fault location/fault pole is constructed.•Not depend on transmission line model parameters.•Higher fault location accuracy.•Robust against fault resistance.
ISSN:0378-7796
1873-2046
DOI:10.1016/j.epsr.2024.110598