Results 71 to 80 of about 1,581 (183)

Modeling of Efficient Control Strategies for LCC-HVDC Systems: A Case Study of Matiari-Lahore HVDC Power Transmission Line. [PDF]

Sensors (Basel), 2022
Ahmed A, Khan D, Khan AM, Mustafa MU, Panjwani MK, Hanan M, Agyekum EB, Uhunamure SE, Edokpayi JN.   +8 more
europepmc   +1 more source

DC protection coordination for multi‐terminal HB‐MMC‐based HVDC grids

IET Renewable Power Generation
Fast progress of High Voltage Direct Current (HVDC) technology has been considerable over the past decades. Emerging Modular Multilevel Converter (MMC) provides power systems with promising solutions to integrate large‐scale renewable energy sources, as ...
Seyed Hassan Ashrafi Niaki, Zhe Chen, Birgitte Bak‐Jensen, Kamran Sharifabadi, Zhou Liu, Shuju Hu   +5 more
doaj   +1 more source

Abnormal Failure Modes and Their Impact on HVDC Applications

Energies
Detecting and disconnecting faults is of utmost importance in power systems to prevent damage, outages and limit the impact on the surrounding grid. However, there are faults that may not be detected by protective functions and therefore do not interrupt
Martin Pettersson, Math Bollen
doaj   +1 more source

A Two-Dimensional Cloud Model for Condition Assessment of HVDC Converter Transformers

Energies, 2012
Converter transformers are the key and the most important components in high voltage direct current (HVDC) power transmission systems. Statistics show that the failure rate of HVDC converter transformers is approximately twice of that of transformers in ...
Linjie Zhao, Jinzhuang Lv, Youyuan Wang, Jian Li, Zhiman He   +4 more
doaj   +1 more source

Investigation of Leakage Current Behaviour on Artificially Contaminated Insulators Under Superimposed HVDC Voltage Stress and Hybrid HVDC/HVAC Transmission Conditions

Energies
High-voltage direct current (HVDC) transmission systems are increasingly used for long-distance power transmission and the integration of renewable energy sources. In such systems, outdoor insulators are exposed to combined electrical stresses, including
Julian Hanusrichter, Frank Jenau
doaj   +1 more source

Adaptive CFPREV Control for Cascading Commutation Failure Mitigation Considering Reactive Power Interaction

IEEE Access
Advancing the firing angle implemented by the commutation failure prevention (CFPREV) is an effective method for commutation failure (CF), but the increase of reactive power consumption of local inverter would cause adverse influence on voltage at the ac
Chenyi Zheng, Yi Tang
doaj   +1 more source

Fault Detection and Classification in MMC-HVDC Systems Using Learning Methods. [PDF]

Sensors (Basel), 2020
Wang Q, Yu Y, Ahmed HOA, Darwish M, Nandi AK.   +4 more
europepmc   +1 more source

Quantifying and Mitigating Cascading Impacts in HVdc-Interconnected Power Grids

IEEE Access
With the increasing penetration of HVdc technologies in today’s power systems, especially for interconnecting neighboring grids—including those that are renewable-rich—there is a need to explore their contribution to system ...
Sina Hashemi, Markos Asprou, Lenos Hadjidemetriou, Mathaios Panteli   +3 more
doaj   +1 more source

HVDC Cable System Testing

High Voltage
ABSTRACT This paper reviews the existing testing techniques for high voltage direct current (HVDC) cable systems, following as a backbone the structure of CIGRE Technical Brochure (TB) 852:2021 ‘Recommendations for testing DC extruded cable systems for power transmission at a rated voltage up to 800 kV’ because it has a fairly similar
openaire   +2 more sources

Expanding Point-to-Point HVDC Systems Into HVDC Supergrids

Offshore wind power is the largest growing source of renewable energy, and the use of high-voltage direct current (HVDC) technology is helping to facilitate this growth. This project focuses on the expansion of currently existing point-to-point HVDC systems into multi-terminal HVDC grids.
Lundin, Zakk, Sandholm, Love
openaire   +1 more source