This work presents the outcome of a comprehensive study that assesses the transient behaviour of two high voltage direct current (HVDC) networks with similar structures but using different converter topologies, termed two-level and half-bridge (HB) modular multilevel converter (MMC). To quantify the impact of converter topology on DC current characteristics a detailed comparative study is undertaken in which the responses of the two HVDC network transients during dc side faults are evaluated. The behaviour of the HVDC systems during a permanent pole-to-pole and pole-to-ground faults are analysed considering a range of fault resistances, fault positions along the line, and operational conditions as a prerequisite. Fast Fourier Transform (FFT) has been conducted analysing di/dt for both converter architecture and fault types taking into consideration sampling frequency of 96 kHz in compliance with IEC-61869 and IEC-61850:9-2 for DC-side voltages and currents.
|Publication status||Published - 19 Apr 2016|
|Event||8th IET International Conference on Power Electronics, Machines and Drives - The Hilton Hotel, Glasgow, United Kingdom|
Duration: 19 Apr 2016 → 21 Apr 2016
|Conference||8th IET International Conference on Power Electronics, Machines and Drives|
|Abbreviated title||PEMD 2016|
|Period||19/04/16 → 21/04/16|
- high voltage direct current
- DC fault- analysis
- VSC converter topology
- modular multi-level converter
Tzelepis, D., Ademi, S., Vozikis, D., Dysko, A., & Subramanian, S. (2016). Impact of VSC Converter Topology on Fault Characteristics in HVDC Transmission Systems. Paper presented at 8th IET International Conference on Power Electronics, Machines and Drives, Glasgow, United Kingdom.