Hybrid HVDC circuit breakers with an energy absorption branch of a parallel arrester structure
High Voltage, 2022 Hybrid circuit breakers (CBs) are the most promising technology to isolate DC faults in modular multilevel converter (MMC)‐based DC grids. However, they consist of expensive power electronic components that are sensitive to high overvoltage and ...
Jingqiu Yu +3 more
doaj +1 more source
PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags [PDF]
, 2018 This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright.
Camacho Santiago, Antonio +4 more
core +2 more sources
Switching Overvoltages in 60 kV reactor compensated cable grid due to resonance after disconnection [PDF]
, 2008 Bak, Claus Leth +2 more
core +3 more sources
Energies, 2016 During the switching on/off of shunt capacitor banks in substations, vacuum circuit breakers (VCBs) are required to switch off or to switch on the capacitive current.
Wenxia Sima +4 more
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Switching transients caused by vacuum circuit breakers in collection grids of offshore wind farms
Wind Energy, 2021 In this study, transients that can occur in the collection grids of offshore wind farms were investigated. On the basis of the multiple prestrike and reignition model that can reflect the actual operation of a vacuum circuit breaker (VCB), a switching ...
Jiayuan Tao +6 more
doaj +1 more source
Energies, 2023 The paper aims to analyze the parameters of prototypes of new overvoltage protection devices for power grids—a multi-chamber insulator arrester (MCA) and a long flashover arrester (LFA). The article presents the research results on determining the actual
Michał Borecki, Maciej Ciuba
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Considering the Switching Strategy of the Transmitting Wind Power to Deal with the DC Blocking Fault Under the Constraint of Transient Overvoltage [PDF]
Dianli jianshe[Objective] For the power grid with high penetration of new energy，measures such as rapid shut-off or emergency reduction of the power of new energy stations are often used to deal with DC lockout faults，but the cutting will weaken the strength of the ...
MA Qiang, YIN Chunya, QIN Yanhui, MA Xing, TANG Zhipeng
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VICARED: A Neural Network Based System for the Detection of Electrical Disturbances in Real Time [PDF]
, 2005 The study of the quality of electric power lines is usually known as Power Quality. Power quality problems are increasingly due to a proliferation of equipment that is sensitive and polluting at the same time.
Elena Ortega, José Manuel +4 more
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Fundamental Modeling of the Switching Transition in High-Speed Power Electronics
IEEE AccessRecent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
doaj +1 more source
The Journal of Engineering, 2018 Overvoltage caused by faults or switching is one of the decisive factors affecting the insulation level of equipment in UHVDC transmission systems.
Xiaoguang Zhu +6 more
doaj +1 more source