Results 71 to 80 of about 792,851 (265)
Dynamic Behaviour of Bubbles in Oil Under Electrothermal Ageing
High 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
An Overview of HVDC Technology
Energies, 2020 There is a growing use of High Voltage Direct Current (HVDC) globally due to the many advantages of Direct Current (DC) transmission systems over Alternating Current (AC) transmission, including enabling transmission over long distances, higher ...
Neville R. Watson, Jeremy D. Watson
doaj +1 more source
Single-end Protection Scheme Based on Transient Power Waveshape for Hybrid HVDC Transmission Lines
Journal of Modern Power Systems and Clean Energy, 2023 The recent in-depth development of hybrid high-voltage direct current (HVDC) transmission systems poses looming adaptability challenges to protection.
Feiyang Dai, Zexin Zhou, Xingguo Wang
doaj +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
Test system requirements for modelling future power systems [PDF]
, 2010 This paper discusses the need for new test system models to be developed and made available to researchers. A number of features of such test systems are proposed.
Bell, K.R.W., Tleis, A.N.D.
core +1 more source
Development of ± 550 kV DC GIS Basin Insulator
High Voltage, EarlyView.ABSTRACT The basin insulator is a core component of the insulation system for ± 550 kV gas‐insulated switchgear (GIS). This paper, using a finite element method for multi‐physics simulations of electric–thermal coupling, determines a geometry suitable for the industrial production of ± 550 kV GIS basin insulators.
Shaohua Cao +9 more
wiley +1 more source
Energies, 2021 High-voltage direct current (HVDC) has received considerable attention due to several advantageous features such as minimum transmission losses, enhanced stability, and control operation.
Tarek Abedin +7 more
doaj +1 more source
Topology assessment for 3 + 3 terminal offshore DC grid considering DC fault management [PDF]
, 2014 Peer ...
Jovcic, Dragan +3 more
core +1 more source
High Voltage, EarlyView.ABSTRACT Converter transformer vibration failures, primarily because of winding and core vibrations, severely impact the safe operation of high voltage direct current (HVDC) systems. These vibrations are influenced by voltage and current, and are transmitted through transformer oil and structural components to the tank. Current numerical models fail to
Peiyu Jiang, Fanghui Yin, Liming Wang
wiley +1 more source
Multi-terminal HVDC grids with inertia mimicry capability [PDF]
, 2016 The high-voltage multi-terminal dc (MTDC) systems are foreseen to experience an important development in the next years. Currently, they have appeared to be a prevailing technical and economical solution for harvesting offshore wind energy. In this study,
Gharehpetian, Gevorg B. +4 more
core +2 more sources