Results 1 to 10 of about 21,960 (221)
Unified reference controller for flexible primary control and inertia sharing in multi-terminal voltage source converter-HVDC grids [PDF]
, 2016 Multi-terminal dc (MTDC) grids are expected to be built and experience rapid expansion in the near future as they have emerged as a competitive solution for transmitting offshore wind generation and overlaying their ac counterpart. The concept of inertia
Candela García, José Ignacio +4 more
core +2 more sources
System Identification of Classic HVDC Systems
SAIEE Africa Research Journal, 2011 Determining models from observations and studying the models' properties is essentially the functionality of science. Models attempt to link observations into some pattern. System identification is the art of building mathematical models of dynamic systems based on observed data from the systems.
L. Chetty, N.M. Ijumba
openaire +1 more source
Distributed Secondary Frequency Control through MTDC Transmission Systems
, 2015 In this paper, we present distributed controllers for sharing primary and secondary frequency control reserves for asynchronous AC transmission systems, which are connected through a multi-terminal HVDC grid.
Andersson, Göran +4 more
core +2 more sources
Fault mode operation strategies for dual H-bridge current flow controller in meshed HVDC grid [PDF]
, 2018 Peer ...
Carvalho, Adriano +5 more
core +2 more sources
EnergiesCommutation failures in high-voltage direct current (HVDC) transmission systems often occur within inverter stations, posing challenges to the safe and consistent operation of HVDC transmission projects.
Dandan Zhao +5 more
doaj +1 more source
The Journal of Engineering, 2019 This paper investigates the integration of large offshore wind farms using parallel HVAC and diode-rectifier based HVDC (DR-HVDC) systems. Three different operation modes, i.e.
Lujie Yu, Rui Li, Rui Li, Lie Xu
doaj +1 more source
DC grids for integration of large scale wind power [PDF]
, 2011 It is widely recognized that the future wind power development in the Nordic region will be to a large extent be offshore. The most promising technology for that is the voltage source converter (VSC) HVDC. A review of the most important options and state-
Carlsson, Ola +8 more
core +1 more source
, 2015 The problem of modeling and control of multi-terminal high-voltage direct-current transmission systems is addressed in this paper, which contains five main contributions.
Benchaib, Abdelkrim +2 more
core +3 more sources
Very long distance connection of gigawatt size offshore wind farms: extra high-voltage ac versus high-voltage dc cost comparison [PDF]
, 2016 This study presents a cost comparison between commercially available high-voltage DC (HVDC) and extra high-voltage AC shore connection (±320 kV voltage source converter and 420 kV-50 Hz single-core and three-core cables), for a 1 GW offshore wind farm ...
LAURIA, Stefano +3 more
core +1 more source
A Cascaded Converter Interfacing Long-Distance HVdc and Back-to-Back HVdc Systems [PDF]
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020 This paper proposes a cascaded converter dedicated to long-distance HVDC infeed and asynchronous back-to-back interconnection of receiving grids. The cascaded converter is consisted of MMCs in series and parallel connection, meeting the high DC voltage and power demand of HVDC system. It realizes hierarchical feeding and asynchronous interconnection of
Wang Xiang +5 more
openaire +2 more sources