Results 51 to 60 of about 639 (185)

Mechanism of Quasi‐Power‐Frequency Resonant Overvoltage Triggered by Multiple Lightning Strikes in High‐Voltage Alternating Current Systems Equipped With Shunt Reactor

High Voltage, EarlyView.
ABSTRACT This paper investigates the generation mechanism of quasi‐power‐frequency resonant overvoltage triggered by multiple lightning strikes in high‐voltage alternating current (HVAC) systems equipped with shunt reactors. Based on field measurements from a 500 kV AC system, equivalent and simplified circuit models have been established to analyse ...
Tao Liang, Tao Cui, Zhengxi Wang, Tongwei Guo, Xiaohui Wu, Hong Zeng, Jie Guo, Yanzhao Xie   +7 more
wiley   +1 more source

Requirements on MV DC circuit breakers

, 2022
Direct Current (DC) power transmission offers many benefits over Alternating Current (AC) and it is therefore making fast inroads in electrical energy systems all over the world. High voltage direct current transmission High-voltage Direct Current (HVDC) offers efficient transmission over long distances particularly when cables must be used, for ...
Norga, Staffan, Hatsagi, B., Costea, Stefan, Kopejtko, P., Cejnar, P., Mathe, J.   +5 more
openaire   +1 more source

Auxiliary Branch for Hybrid DC Circuit Breaker in Flexible DC Grid to Reduce Fault Breaking Time and Arrester Capacity Demand

IEEE Access
Considering the voltage source characteristics of the converters in the flexible DC grid, the current-limiting reactors are usually placed on the DC line terminals to limit the fault current rising speed.
Yingqing Ma, Yuanchao Hu, Hengdong Sun, Lingjie Meng, Xian Zhang, Rugong Cheng   +5 more
doaj   +1 more source

Cone‐Type Insulator Surface Electric Field Measurement Based on Advanced Integrated Optical Electric Field Sensor

High Voltage, EarlyView.
ABSTRACT Direct and accurate measurement of insulator near‐surface electric fields in gas‐insulated equipment is critical for understanding charge accumulation and insulation failure, yet it has been technically challenging. Optical sensing technology is renowned for its high sensitivity, wide dynamic range, strong resistance to electromagnetic ...
Juntong Zong, Weiqi Qin, Zhecheng Zhang, Changhong Zhang, Weiguo Li, Chuanyang Li, Jinliang He   +6 more
wiley   +1 more source

Cost-effective sensor for residual current detection in residential DC microgrids [PDF]

Proceedings of the Estonian Academy of Sciences
Several developments in the fields of power electronics and materials science have turned direct current (DC) power grids, which have remained in the background until now, into attractive alternatives to the existing alternating current (AC)-based power ...
Tanel Jalakas, Dmitri Vinnikov, Siim Erik Viiding   +2 more
doaj   +1 more source

Social Equity Practices in Public Financial Management: A Conceptual Review and Proposed Reforms

Public Administration, EarlyView.
ABSTRACT Equity has been at the core of public finance going at least as far back as 1776 when Adam Smith included it as one of four canons of a good tax in his classic An Inquiry into the Nature and Causes of the Wealth of Nations (Tax Project Institute 2025).
John R. Bartle, Philip G. Joyce, Marilyn M. Rubin   +2 more
wiley   +1 more source

Short-Circuit Protection Schemes for LVDC Microgrids Based on the Combination of Hybrid Circuit Breakers and Mechanical Breakers

International Transactions on Electrical Energy Systems, 2023
In recent years, low-voltage direct current (LVDC) microgrids are becoming more attractive because they represent a solution to integrate renewable sources, storage, and electronic loads bringing some advantages in comparison with traditional AC grids ...
Riccardo Lazzari, Luigi Piegari
doaj   +1 more source

Removal of Real Vegetable Oil Industry Wastewater by Electrocoagulation and Electroflotation Methods

Water and Environment Journal, EarlyView.
This study investigated the effective treatment of real vegetable oil industry wastewater with high pollutant content using electrocoagulation and electroflotation processes with SS316 mesh electrodes. ABSTRACT This study investigated the applicability of environmentally friendly technologies for treating vegetable oil industry wastewater containing ...
Talip Turna, Yalçın Şevki Yıldız
wiley   +1 more source

Sustainable Carbon Fibers Enable Stable Long‐Term Lithium Metal Deposition for Prospective Zero‐Excess Lithium Metal Batteries

Advanced Energy Materials, Volume 16, Issue 30, 12 August 2026.
This work presents lightweight, lignin‐derived carbon fiber current collectors that enable controlled lithium deposition. Structural defects and intermediate‐sized pores stabilize pre‐nucleation quasi‐metallic lithium clusters, promoting uniform lithium plating and stripping.
Samantha L. S. Southern, Jonathon Cottom, Jana B. Fritzke, Emma N. Antonio, Zhenyu Guo, Bhavini Patel, Romain Tort, Ifan E. L. Stephens, Camilla Di Mino, Clare P. Grey, Rhodri Jervis, Emilia Olsson, Heather Au, Maria‐Magdalena Titirici   +13 more
wiley   +1 more source

Low-Voltage Solid-State DC Breaker for Fault Protection Applications in Isolated DC Microgrid Cluster

Applied Sciences, 2019
Due to the interconnected scheme of multiple components, such as distributed generators, storage systems, and loads through converters to a common bus in DC microgrids, the possibility of fault occurrence is increasing significantly.
Mohammad Aman Yaqobi, Hidehito Matayoshi, Mir Sayed Shah Danish, Mohammed Elsayed Lotfy, Abdul Motin Howlader, Senjyu Tomonobu   +5 more
doaj   +1 more source