Results 31 to 40 of about 466 (144)

Driver optimization of high power converter based on BIGT reverse conduction loss

open access: yesIET Power Electronics
Bi‐mode Insulated Gate Transistor (BIGT), owing to its notable attributes in power density and compact dimensions, holds promising applications in the realm of high power converters.
Lei Qi   +8 more
doaj   +1 more source

A Review of Overcurrent Protection in Smart Grids Under Cyber‐Physical Threats With a Cyber‐Physical Evaluation Framework

open access: yesEnergy Science &Engineering, EarlyView.
By manipulating current and voltage measurements, an assailant can induce unwanted relay action while attempting to avoid detection. Detecting advanced cyber intrusions in power protection environments requires specialised data analysis and anomaly detection methods.
Feras Alasali   +6 more
wiley   +1 more source

A VSM (virtual synchronous machine) convertor control model suitable for RMS studies for resolving system operator/owner challenges [PDF]

open access: yes, 2016
In recent years, it has become clear that reaching the targeted levels of renewable power generation poses problems, not only for basic infrastructure and generation/load balancing, but also in terms of fundamental network stability.
Booth, Campbell   +6 more
core  

Field Studies on the Influence of High‐Voltage Direct Transmission Underground Cables on Soils Along the SuedLink Route in Southwest Germany

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
During regular operation of the SuedLink at a load ≤75 %, the average increase in temperature in the plowing horizon is expected to be less than 1.6°C in the soils along the route in Southwest Germany. ABSTRACT Background The SuedLink was planned as a high‐voltage direct‐current underground cable route. The construction itself is a massive intervention
Joachim Ingwersen   +10 more
wiley   +1 more source

Effects of VSM convertor control on penetration limits of non-synchronous generation in the GB power system [PDF]

open access: yes, 2016
2013 saw the presentation of a paper [1][2] to the wind integration workshop, which demonstrated 26 high convertor penetration scenarios, 17 of which introduced a type of instability in RMS models previously unseen by the researchers. It also provided an
Booth, Campbell D.   +6 more
core  

Construction and Application of Online Vibration Frequency Response Analysis Method for Converter Transformer Winding

open access: yesHigh Voltage, EarlyView.
ABSTRACT The harmonic current and vibration of a converter transformer are effective pieces of information for detecting mechanical faults in the winding. In this paper, the ratio of vibration acceleration to the current squared is defined as the vibration frequency response function (VFRF) of the winding, and then, a novel online vibration frequency ...
Shuyu Wu, Fan Zhang, Shengchang Ji
wiley   +1 more source

Reliability Assessment of LCC Based HVDC Systems Using Public Failure Data [PDF]

open access: yes, 2020
Lack of representative and sufficient failure data is a common problem faced by researchers in the area of HVDC systems reliability analysis. To alleviate this problem, researchers usually resort to the collection of data from different publicly ...
Barnes, Mike   +3 more
core   +2 more sources

Analysis of stable operation region of the hybrid AC/DC distribution systems

open access: yesThe Journal of Engineering, 2020
Hybrid alternating current (AC)/direct current (DC) distribution is a promising technology emerging for future power systems owing to its advantages, such as high controllability and compatibility.
Ming Wu   +5 more
doaj   +1 more source

Dynamic Behaviour of Bubbles in Oil Under Electrothermal Ageing

open access: yesHigh Voltage, EarlyView.
ABSTRACT During long‐term operation of converter transformers, the internal oil–pressboard insulation undergoes irreversible degradation. Partial discharge in the weakened insulation will cause the formation of a large number of bubbles in the insulating oil.
Hongbin Wu   +7 more
wiley   +1 more source

Development of a Great Britain Transmission System Reduced Model for Hardware-In-the-Loop Studies [PDF]

open access: yes, 2020
© © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Bradley, M, Imris, P, Li, Y, Taylor, G
core   +1 more source

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