A new fault-ride-through strategy for MTDC networks incorporating wind farms and modular multi-level converters

Abstract

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Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

“…A novel FRT capability in order to control the DC voltage is proposed in Tzelepis et al for two wind farms connected to multiterminal HVDC system based on MMCs. Presented FRT scheme is established in the offshore AC station for each wind farm.…”

“…Entire control process based on PSC-PWM method is presented by Wang et al 177 for BTB connected MMC-based permanent magnet synchronous generator (PMSG) wind energy conversion systems. In order to overcome the difficulties in A novel FRT capability in order to control the DC voltage is proposed in Tzelepis et al 178 for two wind farms connected to multiterminal HVDC system based on MMCs. Presented FRT scheme is established in the offshore AC station for each wind farm.…”

Centralised busbar differential and wavelet‐based line protection system for multi‐terminal direct current grids, with practical IEC‐61869‐compliant measurements

“…Using a moving ten-sample window W , for each current I dc , a fault detection signal f ds(I dc ) is calculated as defined by equation (1).…”

“…There are five modular multi-level converters (MMCs) in the network operating at ±400 kV (in symmetric monopole configuration), current-limiting inductors and hybrid circuit breakers (HbCBs). The MMC models utilised in this paper are identical to those used in [1,12,25,26] and the AC-DC network parameters are presented in Table 1. The lines have been modelled using a distributed parameter model.…”

Novel Fault Location in MTDC Grids With Non-Homogeneous Transmission Lines Utilizing Distributed Current Sensing Technology

“…W ITH recent rapid development of power electronics, high voltage direct current (HVDC) networks incorporating voltage source converters (VSCs) have become an attractive option for bulk power transfer from offshore wind farms [1], [2] and also for upgrading and interconnecting existing AC systems [3], [4].…”