Results 1 to 10 of about 7,742 (138)

Research on Field Source Characteristics of Leakage Current of Arrester Based on TMR Sensor [PDF]

open access: yesSensors, 2023
The status of zinc oxide (ZnO) arresters is directly related to the safety of power grids. However, as the service life of ZnO arresters increases, their insulation performance may decrease due to factors such as operating voltage and humidity, which can
Yameng Fu   +8 more
doaj   +2 more sources

Fracture toughness of schist, amphibolite, and rhyolite from the Sanford Underground Research Facility (SURF), Lead, South Dakota [PDF]

open access: yesScientific Reports, 2022
The Cracked Chevron Notched Brazilian Disc (CCNBD) method was selected for Mode I fracture toughness tests on Poorman schist, Yates amphibolite, and rhyolite dikes from the EGS Collab site at the SURF in Lead, South Dakota.
Ben Jahnke   +5 more
doaj   +2 more sources

Design of the monitoring system for the internal state characteristic parameters of ultra-high voltage metal oxide arresters [PDF]

open access: yesE3S Web of Conferences, 2021
At present, UHV surge arresters have a large number of sections and complex structures. The existing live detection and online monitoring technologies can no longer effectively determine the problem of deterioration of the internal resistance of the ...
Geng Lina   +3 more
doaj   +1 more source

Leakage current characteristics and ageing assessment technology of roof arrester under ultra harmonics overvoltage

open access: yesHigh Voltage, 2022
The large leakage current of the roof arrester caused by the high‐frequency resonant overvoltage on the high‐speed train occurs intermittently, which will cause the arrester to overheat locally.
Jixing Sun   +7 more
doaj   +1 more source

Study on the Measurement of the On-Site Overvoltage and Internal Temperature Rise Simulation of the EMU Arrester

open access: yesApplied Sciences, 2022
In order to analyze the explosion accidents of the CRH5 EMU roof arrester in recent years, an internal temperature measuring platform based on fluorescence fiber was established, and the temperature distribution characteristics under the continuous ...
Shenghui Wang   +7 more
doaj   +1 more source

Research on the Modification Plan of HVDC Transfer Switch Arrester

open access: yes南方能源建设, 2022
[Introduction] During the earth return and metallic return mode conversion of China's HVDC transmission projects in operation, several MRTB (metallic return transfer breaker) or ERTB (earth return transfer breaker) oscillation platform arrester damage ...
LU Yuxin   +5 more
doaj   +1 more source

Development of High Gradient ZnO Arrester Material for High Voltage Applications

open access: yesIEEE Access, 2020
The presence of stray capacitance in ZnO (Zinc Oxide) surge arresters causes hurdles in arrester operation and non-uniform voltage distribution along the arrester column, especially for High Voltage (HV) and Extra high voltage (EHV) applications.
Kannadasan Raju   +4 more
doaj   +1 more source

Seismic Response Analysis of High-Voltage Bushings and Down Lead Transmission Line Systems in Substations

open access: yesApplied Sciences, 2022
Based on an actual ultra-high voltage (UHV) substation, a finite element (FE) model for a high-voltage (HV) bushing, arrester, and down lead transmission line (DLTL) system was built using ANSYS software.
Meng Zhang   +3 more
doaj   +1 more source

Study on operation voltage monitoring and electrothermal coupling simulation of electric multiple unit (EMU) roof arrester

open access: yesHigh Voltage, 2022
The roof arrester of electric multiple units (EMU) can efficiently limit the overvoltage, and ensure the safe operation of the EMU electrical equipment.
Qizhe Zhang   +5 more
doaj   +1 more source

Failure Risk Assessment of Surge Arrester Using Paralleled Spark Gap

open access: yesIEEE Access, 2020
Surge arresters are usually used to protect distribution feeders against randomly distributed lightning overvoltages. However, there is a probability of surge arrester failure due to an increase in its absorbed energy over the withstand capability.
Nehmdoh A. Sabiha   +2 more
doaj   +1 more source

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