Results 71 to 80 of about 1,562 (203)

Comprehensive Design and Experimental Validation of 30 kV Ultra‐Fast Flexible Controllable Arresters for HVDC Systems

High Voltage, EarlyView.
ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang, Xiangyu Zhang, Sihang Wu, Lei Qi, Xiang Cui   +4 more
wiley   +1 more source

Overvoltage Elimination via Distributed Backstepping-Controlled Converters in Near-Zero-Energy Buildings Under Excess Solar Power to Improve Distribution Network Reliability

Energies
This work uses battery-coupled power electronic converter systems and distributed backstepping controllers to improve the reliability of electrical distribution networks.
J. Dionísio Barros, Luis Rocha, A. Moisés, J. Fernando Silva   +3 more
doaj   +1 more source

AGIcam: An open‐source Internet of Things–based camera system for automated in‐field phenotyping and yield prediction

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Continuous, high‐frequency monitoring is essential to capture rapid phenological transitions and dynamic crop responses to the environment. However, most phenotyping platforms lack the temporal resolution and automation required for consistent, season‐long trait assessment.
Worasit Sangjan, Nisit Pukrongta, Trevor Buchanan, Arron H. Carter, Michael O. Pumphrey, Sindhuja Sankaran   +5 more
wiley   +1 more source

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

High 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, Qing Chen, Hongbin Li, Yue Tong, Linshan Han, Yang Jiao   +5 more
doaj   +1 more source

Influence Analysis of 500 kV Power Transmission and Transformation Project on Power Frequency Overvoltage Based on PSCAD

Smart Grid, 2017
500 kV输变电工程的线路模型选择对操作过电压有着不同的影响以及实际工程中不同检修方式都对工频过电压有影响，针对上述问题笔者应用PSCAD电磁暂态仿真软件对在Bergeron、Mode Model、Phase Model线路模型下进行仿真验证和分析在十二种检修方式下对工频过电压影响最大的一种方式，通过实际工程说明操作过电压在Mode Model、Phase Model线路模型下更接近实际。对于双回路的输变电工程在不同检修方式下，对于其中一条线路分析，与它相邻线路检的修对其工频过电压影响最严重，在实际工程中，工作人员应该多加注意。笔者通过以上分析对500 kV实际输变电工程启动和检修有一定的指导意义。 The line model selection of 500 kV transmission ...
openaire   +1 more source

Coral‐Reef‐Like Nanoporous Nickel Architecture for Enhanced Oxygen/Hydrogen Evolution Reaction and Alkaline Water Electrolysis

Advanced Sustainable Systems, Volume 10, Issue 7, July 2026.
The coral‐reef‐like nanoporous architecture of Ni, designed through NiCu dealloying, promotes HER and OER by increasing active site density, facilitating charge transfer kinetics, and expanding the electrochemically active surface area, resulting in improved alkaline water electrolysis efficiency.
Mohmmad Khalid, Simon Barnabé, Samaneh Shahgaldi   +2 more
wiley   +1 more source

Multimethod Microstructural Diagnostics of Polymer Electrolyte Membrane Water Electrolysis Cell Components Uncovering Diverging Degradation Pathways After Short‐Term Testing

ChemElectroChem, Volume 13, Issue 12, 17 June 2026.
This study probes why polymer electrolyte membrane electrolyzers lose efficiency under different operating profiles. Using electrical tests, microscopy, and spectroscopy, Ti‐PTL passivation is established as the dominant cause for increased Ohmic resistance in samples aged under constant and triangular current profiles for 88 h.
Annik Bernhardt, Fabian Pascher, Robert Göckeritz, Angelika Hähnel, Alexander Müller, Erik Grunwald, Tobias Albrecht, Thomas Ackermann, Finn Ostermeyer, Wolfram Münchgesang, Michael Bron, Kerstin Witte‐Bodnar, Volker Naumann, Klemens Ilse   +13 more
wiley   +1 more source

The Leakage Current Characteristics of High-Gradient MOA Plate and Its Heating Analysis with Coatings under High-Frequency Overvoltage

, 2023
High-frequency overvoltage generated in railways results in explosions of Electric Multiple Units’ (EMUs) arrestors. To solve this problem, the leakage current characteristics and heat transfer process of high-gradient MOA plates under high ...
Xin Wang, Jixing Sun, Kun Zhang, Shengchun Yan, Jiyong Liu, Yongzhi Fan   +5 more
core   +1 more source

New approach to overvoltage protection of power distribution networks

, 2008
U ovoj su radnji izvršene analize novih pristupa u prenaponskoj zaštiti srednjenaponskih elektroenergetskih mreža. Analizirani su nastanci i djelovanja prenapona, te je dan pregled postojećih metoda prenaponske zaštite u srednjenaponskim distribucijskim ...
Bago, Drago
core  

Integral Approach for Overvoltage Management Based on Field Data and Modelling

, 2023
The requirements for the power network to be flexible and to be able to transmit more power are becoming more important as a consequence of high share of the renewables.
Levačić, Goran, Bruno Jurisic, Tomislav Župan, Goran Levačić, Božidar Filipović-Grčić, Župan, Tomislav, Bruno, Jurišić, Filipović-Grčić, Božidar   +7 more
core   +1 more source