Results 51 to 60 of about 2,728,275 (121)
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 +7 more
wiley +1 more source
Condition monitoring on surge arrester using improvised Metal Oxide Surge Arrester Intelligent Monitoring System [PDF]
, 2014 A tool for condition monitoring for Metal Oxide Surge Arrester (MOSA) has been developed in Labview. The software (MOSAIMS) runs in Microsoft Windows operating system and features a user friendly graphic interface.
Ramanathan, Haribalan
core
Iranian Journal of Electrical and Electronic Engineering, 2015 This paper aims to measure and analyze of the leakage current of 20 kV polymer and porcelain metal oxide surge arresters under humid ambient conditions by applying different voltages to the arresters terminal.
K. Mokhtari, M. Mirzaie, M. Shahabi
doaj
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 +4 more
wiley +1 more source
A Comprehensive Study on the Quality of Commercially Available Medium Voltage Surge Arresters
IEEE AccessThis paper presents a comprehensive study on the quality and reliability of commercially available medium voltage surge arresters, with particular emphasis on their electrical performance and structural degradation under aging conditions.
Kuba Wojcik +8 more
doaj +1 more source
Study on the Power‐Frequency Arc Extinction Characteristics of Semi‐Closed Short‐Gap Device
High Voltage, EarlyView.ABSTRACT Multi‐chamber arc‐extinguishing devices have a simple structure and excellent arc‐extinguishing performance; thus, they have attracted considerable attention as lightning protection devices. However, the structural parameters of different models of the aforementioned devices vary, leading to inconsistent protection levels; therefore, the arc ...
Yeqiang Deng +4 more
wiley +1 more source
, 2020 Sensing surface contamination of Metal Oxide Surge Arrester through resistive leakage currentsignal analysis by Mathematical ...
Banibrata Ghosh (13060977) +3 more
core
High Voltage, EarlyView.ABSTRACT The traction power supply system of high‐speed railways is exposed to complex lightning environments over the long term. Overvoltage generated by direct lightning or induced lightning can propagate along the overhead contact line, traction substations, onboard high‐voltage system and mobile grounding system, thereby threatening equipment ...
Guangning Wu +9 more
wiley +1 more source
Periodontal Medicine Rewired: Mechanisms Linking Periodontitis to Systemic Diseases
Journal of Periodontal Research, EarlyView.This review reorganizes decades of research in periodontal medicine into a multi‐dimensional framework, illustrating how periodontitis influences systemic health through at least seven interconnected mechanisms. ABSTRACT Periodontitis is now recognized not merely as a localized oral condition but as a systemic disease linked to over 70 communicable and
Mario Romandini +3 more
wiley +1 more source
, 2013 This paper presents a study proposing a method to assess the condition of metal-oxide surge arresters. Thermal data using thermal imaging as well as the leakage current third harmonic component were used as tools to investigate the surge arrester aging ...
Asilah, N. +3 more
core +2 more sources