Protection of Multi-Terminal VSC-HVDC Grids Based on the Response of the First Carrier Frequency Harmonic Current

Mani Ashouri, Hesam Khazraj, Filipe Miguel Faria da Silva, Claus Leth Bak

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11 Citationer (Scopus)

Abstract

Protection of multi-terminal Voltage Source Converter based High Voltage Direct Current (VSC-MTDC) grids is a major challenge for future practical DC transmission technology. According to the harmonic-based protection studies, the response of first carrier frequency harmonic (FCFH) current in Pulse Width Modulation (PWM)-based VSC-HVDC can be used to discriminate external AC faults in point to point VSC-HVDC systems. However, the application of FCFH current for a selective fault detection system in VSC-MTDC grids is not studied yet. This research investigates FCFH current existed in converter DC link measured data, to detect the faulty section in VSC-MTDC system, when the system face faults with variations in location and resistance. A radial VSC-MTDC system with 2-level PWM VSC converters is simulated in PSCAD and MATLAB is used to extract FCFH current based on short-time Fourier transform. Based on the relay locations, the results show the feasibility of the protection algorithm, in discriminating between internal and faults for each zone.
OriginalsprogEngelsk
TitelProceedings of the 2018 53rd International Universities Power Engineering Conference (UPEC)
Antal sider5
ForlagIEEE Press
Publikationsdatosep. 2018
Sider1-5
ISBN (Trykt)978-1-5386-2911-6
ISBN (Elektronisk)978-1-5386-2910-9
DOI
StatusUdgivet - sep. 2018
Begivenhed2018 53rd International Universities Power Engineering Conference - Glasgow, Storbritannien
Varighed: 4 sep. 20187 sep. 2018

Konference

Konference2018 53rd International Universities Power Engineering Conference
Land/OmrådeStorbritannien
ByGlasgow
Periode04/09/201807/09/2018

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