NDLI: Fault detection in Multi-Terminal Modular Multilevel Converter (MMC) based High Voltage DC (HVDC) transmission system

Content Provider	IEEE Xplore Digital Library
Author	Ikhide, M. Tennakoon, S. Griffiths, A. Subramanian, S. Hengxu Ha
Copyright Year	2015
Description	Author affiliation: Fac. of Comput., Eng. & Sci., Staffordshire Univ., Stafford, UK (Ikhide, M.; Tennakoon, S.; Griffiths, A.) \|\| Alstom Grid, Stafford, UK (Subramanian, S.; Hengxu Ha)
Abstract	A Multi-Terminal High Voltage Direct Current (MT-HVDC) network is being considered for utilising the full potential of offshore wind power whereas its realisation is currently being hampered by protection issues. In this paper, a protection strategy for future DC grids based on Modular Multilevel Converter (MMC) based HVDC system is presented. Firstly, a fault detection technique based on initial di/dt measurement is presented and thereafter protection strategies for future DC grids are presented. The fault detection technique presented is based on estimating the initial rate of rise of the current, IRRC (di/dt) at fault inception using measured data and thereafter calculating the line inductance. The calculated line inductance is compared with a setting value to determine whether or not a fault has occurred, thus paving the way for a distance protection strategy. Simulations were carried out using Matlab/SIMULINK for varying fault distances. The results obtained show the validity of the technique in detecting and locating DC side short circuits. An advantage of this technique is that it relies only on information from the local end terminal and as such, no communication channel is required, hence satisfying the protection requirement of fast fault detection and location technique for MT-HVDC systems.
Starting Page	1
Ending Page	6
File Size	1581925
Page Count	6
File Format	PDF
e-ISBN	9781467396820
DOI	10.1109/UPEC.2015.7339887
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-01
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	HVDC transmission Capacitors Offshore Wind Power Converters Discharges (electric) Circuit faults DC Line Protection Fault currents Inductance Modular Multilevel Converter Fault detection and Location DC side short circuits Multi-terminal HVDC System
Content Type	Text
Resource Type	Article

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