Results 11 to 20 of about 916,905 (189)

Analyses on an electronic voltage transformer's failure by its resonance with very fast transient overvoltage and suppression

open access: yesHigh Voltage
As voltage measuring devices are widely used in the high voltage power system with a primary‐secondary‐fusion structure, electronic voltage transformers are directly connected to the primary conductor and would face much more serious electromagnetic ...
Houda Zhu   +5 more
doaj   +2 more sources

A New Method to Overvoltage Restrain of ElectricLocomotive Passing the Neutral Section

open access: yes机车电传动, 2013
Overvoltage problem caused by electric locomotive passing the neutral section, always result in traction substation trip or the arc eroding the contact line.
LI Zong-lei   +3 more
doaj   +2 more sources

Comparison of motor neutral point overvoltage oscillations in SiC-based adjustable speed drives using two-level and three-level inverters [PDF]

open access: yes, 2022
In SiC-based adjustable speed drives, power cables have similar behaviour to transmission lines due to the steep voltage pulses (high dv/dt) which experience back and forth voltage reflections while travelling across the cables, known as the reflected ...
Wenzhi Zhou (6575999)   +2 more
core   +8 more sources

Hydrogen From Simulated Seawater Using Long-Term Stable and Cost-Effective Plasmonic Photocatalysts. [PDF]

open access: yesChemSusChem
Can plasmonic photocatalysts withstand a saline environment? Yes! A conductive polyaniline shell stabilizes gold–silver nanoparticles while largely preserving charge transfer to TiO2, achieving 348 ± 108 μmol H2 g−1 h−1. Moreover, the catalyst survived 1 month of storage in simulated seawater, with almost full retention of its initial activity.
Dingenen F   +7 more
europepmc   +2 more sources

Optimization-Based Mitigation Techniques of the Temporary Overvoltage in Large Offshore Wind Farm

open access: yesIEEE Access, 2023
Overvoltage transient is the major danger facing large offshore wind farms, as it may lead to a complete failure of the system components. A 150 MW offshore wind farm was modeled using the ATP-EMTP package to analyze the effect of the temporary ...
Abdelrahman Said   +4 more
doaj   +1 more source

Resonance Overvoltages in Medium Voltage Multilevel Drive System [PDF]

open access: yes2007 IEEE International Electric Machines & Drives Conference, 2007
Simulations and field tests indicate that unacceptable motor-terminal overvoltages and waveform shapes can occur in the normal operating range with high-output-voltage multilevel drive systems. These waveforms (if unattended) can result in premature motor insulation failures. A case study of an 11-kV multilevel system is presented.
Endrejat, F, Pillay, Pragasen
openaire   +2 more sources

Stochastic resonance in electrical circuits—I: Conventional stochastic resonance. [PDF]

open access: yes, 1999
Stochastic resonance (SR), a phenomenon in which a periodic signal in a nonlinear system can be amplified by added noise, is introduced and discussed. Techniques for investigating SR using electronic circuits are described in practical terms.
Luchinsky, D. G.   +3 more
core   +5 more sources

Analysis of Transformer Resonant Overvoltages Due to Switching Capacitance [PDF]

open access: yesSecond International Conference on Advances in Information Processing and Communication Technology - IPCT 2015, 2015
Power transformer transients, which are originated from non-linear operating characteristics, may cause failure of a power system. In this study, a special resonance phenomenon where overvoltages observed due to switching capacitances of the line is investigated.
CENGIZ POLAT   +3 more
openaire   +1 more source

Transformer Resonance: Reasons, Modeling Approaches, Solutions

open access: yesIEEE Access, 2023
Due to the extension of the power grid with many complex and compact pieces of power equipment, transformers will be more exposed to fast transient, resulting from various resonance conditions.
Amir Heidary   +3 more
doaj   +1 more source

Protection of Solar Power Generation System from Lightning Induced Overvoltage

open access: yes, 2023
Due to crisis in natural resources and ecological issues, many countries are moving on the road to renewable energy sources. Solar power is the most potential source of renewable energies.
Hossain, MA, Ahmed, MR, Karim, MR
core   +1 more source

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