High frequency-based protection algorithm for meshed MTDC systems

This research presents a high frequency-based algorithm for zonal protection of meshed Multi-Terminal high voltage Direct Current (MTDC) systems. Discrete wavelet transform (DWT) is used to capture high frequency current transients from one end of each line. The faulty line is identified by analyzin...

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Bibliographic Details
Published in:Electrical engineering 2022-10, Vol.104 (5), p.3313-3324
Main Authors: Abu-Elanien, Ahmed E. B., Elserougi, Ahmed A.
Format: Article
Language:English
Subjects:
Algorithms
Direct current
Discrete Wavelet Transform
Economics and Management
Electrical Engineering
Electrical Machines and Networks
Energy Policy
Engineering
Fault detection
Faults
High frequencies
Original Paper
Power Electronics
Wind power
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Summary:This research presents a high frequency-based algorithm for zonal protection of meshed Multi-Terminal high voltage Direct Current (MTDC) systems. Discrete wavelet transform (DWT) is used to capture high frequency current transients from one end of each line. The faulty line is identified by analyzing two distinct high frequency bands form the captured transients. The characteristics of these current transients during normal condition are different from faulty condition. A four-terminal meshed MTDC model is used to test the performance of the protection algorithm. Various faults with different fault scenarios were simulated using four-terminal meshed MTDC model. The simulation results showed success of the algorithm in identifying internal faults. Moreover, the high frequency algorithm showed robustness against other abnormal conditions such as AC faults and sudden change of wind power.
ISSN:0948-7921
1432-0487
DOI:10.1007/s00202-022-01555-y