Results 181 to 190 of about 4,868 (226)

HVDC Systems in Smart Grids

Proceedings of the IEEE, 2017
The use of direct current (dc) power networks, either at high voltage or at medium voltage, is being increasingly seen in modern smart grids. This is due to the flexible control possible with dc and its ability to transmit and distribute power under circumstances where alternating current (ac) networks are either unable to, or less economic. This paper
Mike Barnes, Dirk Van Hertem, Simon P. Teeuwsen, Magnus Callavik   +3 more
openaire   +3 more sources

HVDC circuit breakers for HVDC grid applications

11th IET International Conference on AC and DC Power Transmission, 2015
High Voltage Direct Current (HVDC) transmission has been expanding due to rapid development of power electronics technology and by the need for connection of offshore/remote wind farms and large hydro power generators. An HVDC grid will be required to operate the healthy lines continuously, even if a voltage collapse occurs at the remote end.
K. Tahata, H. Ito, R. Yamamoto, K. Kamei, Y. Kono, S. El Oukaili, D. Yoshida   +6 more
openaire   +1 more source

Impact of HVDC grid segmentation topology on transient stability of HVDC-segmented electric grid

2015 International Conference on Open Source Systems & Technologies (ICOSST), 2015
This paper investigates the effect of two HVDC grid segmentation topologies i.e. hybrid HVAC-HVDC and standalone HVDC on the transient stability of a 15-bus electric grid. For this purpose, four HVDC station configurations and three HVDC technologies are considered. A three phase AC fault is applied at one of the buses and the rotor angle of one of the
Rehan Naeem, Muhammad Saad Cheema, Maaz Ahmad, Saad Ali Haider, Umar Tahir Shami   +4 more
openaire   +1 more source

Converter topologies for HVDC grids

2014 IEEE International Energy Conference (ENERGYCON), 2014
HVDC grids have significant benefits and will likely play an important role in the future energy system. However, protection and fault handling aspects will be different from those of current ac transmission grids and point-to-point HVDC connections. Therefore, new power electronic solutions will be required.
Staffan Norrga, null Xiaoqian Li, Lennart Angquist   +2 more
openaire   +1 more source

Assembly HVDC Breaker for HVDC Grids With Modular Multilevel Converters

IEEE Transactions on Power Electronics, 2017
The modular multilevel converter (MMC) with half-bridge submodules (SMs) is the most promising technology for high-voltage direct current (HVDC) grids, but it lacks dc fault clearance capability. There are two main methods to handle the dc-side short-circuit fault.
Gaoren Liu, Feng Xu, Zheng Xu, Zheren Zhang, Geng Tang   +4 more
openaire   +1 more source

VSC HVDC as an alternative grid investment in meshed grids

2008 First International Conference on Infrastructure Systems and Services: Building Networks for a Brighter Future (INFRA), 2008
Recent developments in Voltage Source Converter High Voltage Direct Current (VSC HVDC) systems have increased its range of applications. When a new high voltage AC transmission line is planned and part of it has to be undergrounded, VSC HVDC is a competitive alternative to AC connections. In this paper, the results of two studies are reported.
S. Cole, D. Van Hertem, R. Belmans
openaire   +1 more source

HVDC Technology and Smart Grid

9th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2012), 2012
Smart Grid is much more than IT and smart meters. A SmartGrid is an electricity network that can intelligently integrate the actions of all users connected to it - generators, consumers and those that do both-in order to efficiently deliver sustainable, economic and secure electricity.
openaire   +1 more source

Enhancing Grid Resilience with HVDC and FACTS

2022
This panel will review positive impacts of HVDC and FACTS have on system resilience. Potential vulnerabilities that HVDC and FACTS systems inherit from the bulk power system through the interconnected nature ac systems as well as through SCADA and other communication systems will be reviewed with an emphasis on how communications for FACTS systems and ...
B. Johnson, R. Nuqui, D. Roberson
openaire   +1 more source

Comparison of HVDC grid control strategies

2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2017
The integration of renewable energy resources has increased possibility of application of multi terminal direct current (MTDC) system. In this paper, the primary level control of voltage source converter (VSC) and their design method is discussed.
Lokesh Dewangan, Himanshu J. Bahirat
openaire   +1 more source

HVDC Grid Evolvement and Related Grid Transformation in Europe

The panel session will primarily focus on the impact of the energy revolution in Europe on the transmission grid, with a particular emphasis on the need for HVDC technology. It will delve into the challenges and opportunities presented by the interconnection of large-scale wind power in the north and solar power production in the south.
Carsten Gatermann, Hakan Ergun, Kai Strunz, Ervin Dr. Spahic, Franz Linke, Dennis Stemme   +5 more
openaire   +1 more source