Results 21 to 30 of about 420,105 (198)

DC Overvoltage Suppression Strategy for MMC-MTDC Based on Bridge Arm Modulated Wave Adjustment

open access: yesZhongguo dianli
Modular multilevel converter based multi-terminal DC transmission (MMC-MTDC) system can realize multi-source power supplies and multi-terminal power-receiving.
Maolan PENG   +5 more
doaj   +2 more sources

Overvoltage Suppression Strategy for VSG-Based DFIGs Under Commutation Failures of HVDC Transmission Systems

open access: yesEnergies
Virtual synchronous generator (VSG) control, which can provide inertia output, damp power oscillations, and offer frequency and voltage support to power grids, has become a growing trend in the control field of wind power generation. As a new technology,
Shuyi Wang   +5 more
doaj   +2 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

Insulator fault feature extraction system of substation equipment based on machine vision

open access: yesIET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang   +4 more
wiley   +1 more source

Suppression of ferromagnetic resonance overvoltage in CVT and feature analysis of secondary voltage under different faults

open access: yesZhejiang dianli, 2023
Aiming at the problem of overvoltage caused by ferromagnetic resonance fault of 220 kV CVT (capacitive voltage transformer) and the problem of false alarm of 3U0 monitoring device, a simulation model is established based on actual parameters, and the ...
LI Bowen   +5 more
doaj   +1 more source

Application of MMC with Embedded Energy Storage for Overvoltage Suppression and Fault Ride-through Improvement in Series LCC-MMC Hybrid HVDC System

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
The series line-commutated converter (LCC) and modular multilevel converter (MMC) hybrid high-voltage direct current (HVDC) system provides a more economical and flexible alternative for ultra-HVDC (UHVDC) transmission, which is the so-called Baihetan ...
Xiaodong Li, Zheng Xu, Zheren Zhang
doaj   +1 more source

Modeling and Experimental Analysis of Overvoltage and Inrush Current Characteristics of the Electric Rail Traction Power Supply System

open access: yesEnergies, 2022
High-speed EMUs (electric multiple-units) frequently pass through the phase-separation zone during operation. Overvoltage generated during the operation of the vehicle-mounted circuit breaker has a long duration and high waveform steepness, which ...
Jixing Sun   +5 more
doaj   +1 more source

Research on Transient AC Overvoltage Suppression Strategy of Islanded Wind Power Transmission via VSC-HVDC

open access: yes发电技术, 2022
Voltage source converter based high voltage direct current (VSC-HVDC) has a broad application prospect in the field of islanded renewable energy transmission, due to its advantages such as no commutation failure. When AC fault occurs in the AC power grid
YU Xiao, BU Guangquan, WANG Shanshan
doaj   +1 more source

Modelling and control of current full compensation system‐based controllable voltage source

open access: yesIET Generation, Transmission & Distribution, 2023
Current active suppression technology of arc overvoltage in distribution network has small capacity of controllable voltage source and complex control and cannot flexibly adjust the zero‐sequence voltage of neutral point.
Hongwen Liu   +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

Home - About - Disclaimer - Privacy