Results 61 to 70 of about 15,785 (223)

R&D and application of voltage sourced converter based high voltage direct current engineering technology in China

Journal of Modern Power Systems and Clean Energy, 2014
As a new generation of direct current (DC) transmission technology, voltage sourced converter (VSC) based high voltage direct current (HVDC) has been widely developed and applied all over the world.
Guangfu Tang, Zhiyuan He, Hui Pang
doaj   +1 more source

Hybrid HVDC circuit breaker with self-powered gate drives [PDF]

, 2016
The ever increasing electric power demand and the advent of renewable energy sources have revived the interest in high-voltage direct current (HVDC) multi-terminal networks.
Alan J. Watson, Bergstrom L., Billon V., C. Mark Johnson, Chao Ji, Colin Davidson, DLR, German Aerospace Center, Institute of Technical Thermodynamics, Section Systems Analysis and Technology Assessment, Emmanuel Amankwah, Flurscheim C.H., Francis B. Effah, Greenwood A., Greenwood A., Jon Clare, Rieder W., Rieder W., Rieder W., Twenties Project Deliverable 11.3   +16 more
core   +2 more sources

Micro Partial Discharge Characteristics of SF6 Under DC Voltage

High Voltage, EarlyView.
ABSTRACT In gas‐insulated high‐voltage direct current (HVDC) devices, micro partial discharges (PD) caused by micro‐protrusions or surface roughness on conductors or enclosures may not cause immediate insulation system failure due to their weak discharge intensity.
Geng Chen, Jie Wang, Chuanyang Li, Cong Wang, Youping Tu   +4 more
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., Luna Alloza, Álvaro, Rodríguez Cortés, Pedro, Rouzbehi, Kumars, Zhang, Weiyi   +4 more
core   +2 more sources

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

High 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

Nonlinear Control Design of Three-Level Neutral-Point-Clamped-Based High-Voltage Direct Current Systems for Enhanced Availability during AC Faults with Semi-Experimental Validation

Engineering Proceedings, 2023
This research paper addresses the issue of enhancing the operational availability of NPC three-level converter-based high-voltage direct current (HVDC) transport systems during alternating current (AC) grid fault conditions.
Ilyass El Myasse, Aziz Watil, Abdelmounime El Magri, Ambe Harrison   +3 more
doaj   +1 more source

Planning of Grid‐Interactive Flexibility Resources Under Carbon‐Emission Constraints

IET Smart Energy Systems, EarlyView.
High renewable penetration drives the transition of power system planning; this study finds that carbon pricing promotes photovoltaic expansion, whereas deep decarbonisation necessitates diverse technologies and enhanced cross‐regional transmission. ABSTRACT High renewable penetration and stringent decarbonisation targets are reshaping power system ...
Shichang Cui, Jian Qiu, Zhengwei Ren, Renbo Wei, Zhuocheng Feng, Qiang Fan, Qi An   +6 more
wiley   +1 more source

Stability and control of VSC-based HVDC systems: A systematic review

e-Prime: Advances in Electrical Engineering, Electronics and Energy
The technological development in the area of power electronics has paved the way for the construction of High Voltage Direct Current (HVDC) systems. The utilization of HVDC grids alongside conventional High Voltage Alternating Current (HVAC) grids poses ...
Fazel Mohammadi, Neda Azizi, Hassan Moradi CheshmehBeigi, Kumars Rouzbehi   +3 more
doaj   +1 more source

Assessment of fault location techniques in voltage source converter based HVDC systems [PDF]

, 2017
This paper investigates fault location techniques in high voltage direct current (HVDC) transmission networks utilizing voltage source converters (VSCs).
Dyśko, Adam, Glesk, Ivan, Peng, Tzu-Chieh, Tzelepis, Dimitrios   +3 more
core   +1 more source

HVDC Breaker Power Loss Reduction by Bridge-Type Hybrid Breakers

Energies, 2021
Several types of high voltage direct current (HVDC) breakers have been introduced and commercialized. Each of them has advantages and disadvantages. Among them, the hybrid HVDC breaker is highly successful.
Morteza Hesami, Ali Bakhshi, Sheyda Mousavi, Kumars Rouzbehi, Juan Manuel Escaño   +4 more
doaj   +1 more source