Results 91 to 100 of about 6,768 (226)

Comparison of DigSILENT, Matlab PST and PSAT for steady state and stability studies on HVAC-HVDC systems

open access: yes, 2012
Includes abstract.Includes bibliographical references.It is said that the electric power system is the most complex system ever built by mankind. Over the past few decades, many software packages focusing on the study of this complex system have been ...
Ubisse, Albino Virgílio
core  

A Passivity-Based Small-Signal DEF Analysis for Low Frequency Oscillation Source Characterization of VSC-HVdc

open access: yes, 2023
In bulk power systems, detecting the sources of low-frequency oscillations is a challenging problem. Among the techniques available, the dissipating energy flow (DEF) method has emerged as a promising tool with notable success with real-world oscillation
Nilanjan Ray Chaudhuri   +5 more
core   +1 more source

High voltage direct current (HVDC) transmission: Future expectation for Pakistan

open access: yesCSEE Journal of Power and Energy Systems, 2019
An HVDC transmission system for bulk power transfer over longer distance offers numerous advantages over an alternating current (AC) transmission system, such as direct integration of networks operating at different frequencies, comparatively low line ...
Kamran Hafeez, Shahid A. Khan
doaj   +1 more source

Optimizing reactive power flow of HVDC systems using genetic algorithm

open access: yes, 2014
Due to the usage of high voltage direct current (HVDC) transmission links extensively in recent years, it requires more studies in this issue. Two-terminal HVDC transmission link is one of most important elements in electrical power systems.
Arifoğlu, Uğur, Ayan, Kürşat
core   +1 more source

Proposing a Rule for VSC-HVDC Optimal Placement to Improve Transient Stability of Power System [PDF]

open access: yesInternational Journal of Research and Technology in Electrical Industry
Transient stability indicates the system's ability to dampen the rotor oscillations of synchronous generators after severe faults. The transient instability causes considerable damage to the generator and reduces the production capacity in the network ...
Ali Abrishami Moghaddam   +2 more
doaj   +1 more source

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

open access: yesSensors (Basel), 2022
Ahmed A   +8 more
europepmc   +1 more source

Tracking wheel test for DC polymeric insulators [PDF]

open access: yes, 2011
Il lavoro di tesi svolto è atto ad apportare delle migliorie nel sistema di trasmissione HVDC (High Voltage Direct Current). Un elemento problematico per le linee aeree HVDC è dato dagli isolatori, questa situazione si aggrava particolarmente nel caso in
Gazzola, Alice
core  

Abnormal Failure Modes and Their Impact on HVDC Applications

open access: yesEnergies
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

open access: yesEnergies, 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   +4 more
doaj   +1 more source

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