MMC-Based VSC-HVDC Link Fault Protection Using Short-Time Fourier Transform

This work presents a protection scheme based on Short-Time Fourier Transform for fault detection in an MMC-based VSC-HVDC system. To perform these tasks only local signals are used and communication links are not required. A robust scheme based on DC current spectrum is evaluated. The proposed metho...

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Bibliographic Details
Main Authors: Torres, Julio Arita, dos Santos, Ricardo Caneloi, de Freitas, Adriano Gomes, Leite Asano, Patricia Teixeira
Format: Conference Proceeding
Language:English
Subjects:
Fault detection
Fourier transforms
Frequency-domain analysis
HVDC systems
HVDC transmission
Modular Multilevel Converters
Power transmission lines
Shorth-Time Fourier Transform
Steady-state
Transformers
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Description
Summary:This work presents a protection scheme based on Short-Time Fourier Transform for fault detection in an MMC-based VSC-HVDC system. To perform these tasks only local signals are used and communication links are not required. A robust scheme based on DC current spectrum is evaluated. The proposed method has been tested for different fault locations and resistances in a two-terminal HVDC system with a monopole DC line. The adopted HVDC system was modeled in PSCAD, while the proposed algorithm was developed in Matlab. The results show that the proposed scheme is able to detect faults within a few milliseconds correctly.
ISSN:2572-1445
DOI:10.1109/INDUSCON58041.2023.10374572