Results 51 to 60 of about 624 (193)
A Novel Digital Twin Platform for Accelerating Power Systems Restoration
Energy Internet, EarlyView.Hardware Architecture Design of DT System in Laboratory. ABSTRACT With the global energy structure transforming towards the goal of net zero emissions, the penetration of an inverter‐based resource (IBR) in power systems is increasing. This transformation poses two critical challenges: the system post blackout restoration process becomes extremely ...
Yiliang Fan +8 more
wiley +1 more source
Type Tests for Hybrid HVDC Breakers: a Technical Feasible Solution
, 2023 In the coming years, the use of the HVDC circuit breakers will become a necessity in the “grids of the future” (basically multi-terminal HVDC grids). An obliged step is to test such equipment before to install it on the grids.
Roy Maarten Nijman +4 more
core
A capacitor-based DC circuit breaker for HVDC power grid
Frontiers in Energy Research, 2022 DC circuit breakers (DCCBs) are the critical equipment to isolate faults in high-voltage DC grids. The improvement of interruption performances of capacitor-based DCCBs (C-DCCBs) has been widely researched.
Zhuang Xu +4 more
doaj +1 more source
Application of Deep Learning in Virtual Power Plants—A Review
Energy Internet, EarlyView.ABSTRACT The advancement of deep learning (DL) has substantially improved the power grid’s ability to model and optimise diverse and highly complex tasks. Although intelligent transformation is an inevitable trend, traditional approaches increasingly reveal limitations in computational efficiency, nonlinear nonconvex optimisation, and multi‐layer ...
Hongjie Zhu +7 more
wiley +1 more source
High Voltage, 2019 Mechanical circuit breakers (MCBs) are the limiting component for current injection HVDC circuit breakers. Improving their interruption performance reduces requirements for capacitance and inductance needed in the injection circuit and thus space use and
Tim Schultz +5 more
doaj +1 more source
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
Hybrid DC circuit breaker with coupled inductor for automatic current commutation [PDF]
, 2020 HVDC transmission systems using voltage source converters (VSC-HVDC) have been identified as an attractive solution for bulk power delivery over long distance. However if DC grids are to be built using this technology, fast DC circuit breakers are needed.
Smith, Alexander C.; id_orcid +4 more
core +1 more source
DC Fault Analysis and Clearance Solutions of MMC-HVDC Systems
Energies, 2018 In this paper, the DC short-circuit fault and corresponding clearance solutions of modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems are analyzed in detail.
Zheng Xu +3 more
doaj +1 more source
High Voltage, EarlyView.ABSTRACT This study investigates the effects of radiation‐induced ageing on the physical, chemical, mechanical and electrical properties of Poly[4,4′‐oxydiphenylene‐ pyromellitimide] (PMDA‐ODA) polyimide, a high‐performance insulation material widely used in aerospace applications.
Simone Vincenzo Suraci +3 more
wiley +1 more source
Feasible protection strategy for HVDC system by means of SFCL and passive resonance DC breaker
The Journal of Engineering, 2019 The key obstacle in implementing high-voltage direct current (HVDC) grid, which is considered as the future of power grid, is the absence of effective DC circuit breaker (DCCB). At present, HVDC grid could be based on half-bridge (HB) or full-bridge (FB)
Ho-Yun Lee +3 more
doaj +1 more source