An Intelligent Method for Fault Location Estimation in HVDC Cable Systems Connected to Offshore Wind Farms

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Abstract

Large and remote offshore wind farms (OWFs) usually use voltage source converter (VSC) systems to transmit electrical power to the main network. Submarine high-voltage direct current (HVDC) cables are commonly used as transmission links. As they are liable to insulation breakdown, fault location in the HVDC cables is a major issue in these systems. Exact fault location can significantly reduce the high cost of submarine HVDC cable repair in multi-terminal networks. In this paper, a novel method is presented to find the exact location of the DC faults. The fault location is calculated using extraction of new features from voltage signals of cables’ sheaths and a trained artificial neural network (ANN). The results obtained from a simulation of a three-terminal HVDC system in power systems computer-aided design (PSCAD) environment show that the maximum percentage error of the proposed method is less than 1%.
OriginalsprogEngelsk
TidsskriftWind
Vol/bind3
Udgave nummer3
Sider (fra-til)361-374
Antal sider14
ISSN2674-032X
DOI
StatusUdgivet - 31 aug. 2023

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