Results 11 to 20 of about 3,902 (291)

Research of risk assessment reliability of relay protection based on Three-parameter Weibull distributio

open access: yesGong-kuang zidonghua, 2016
In view of problems that traditional risk assessment and reliability analysis methods of power grid focused on relay protection reliability indicators and did not involve change of reliability and actual risk in operation of relay protection device, the ...
ZHOU Peiqiang   +5 more
doaj   +2 more sources

A study on the reliability of relay protection devices considering dynamic changes in temperature stress

open access: yesZhejiang dianli
Relay protection devices contain numerous electronic components, and environmental factors such as temperature, humidity, and vibration can impact their reliability.
GONG Jie   +3 more
doaj   +2 more sources

Algorithm for power transformer relay protection that considers harmonic components and fuzzy logic to enhance energy efficiency [PDF]

open access: yesE3S Web of Conferences
Amid the increasing global energy consumption and the necessity to enhance the reliability of power systems, the adoption of modern control methods is becoming essential.
Zhenis Meiirlan   +2 more
doaj   +2 more sources

Research on state evaluation of relay protection device based on grey correlation degree

open access: yesDiance yu yibiao
In order to utilize the status information data of the relay protection device, improve the efficiency and quality of operation and maintenance, in this paper, the static historical data and real-time monitoring data of the relay protection device are ...
XU Feng   +6 more
doaj   +2 more sources

Current Status of Relay Protection of Mine 35 kV Power Line and Its Improvement Measures

open access: yesGong-kuang zidonghua, 2011
Current status of relay protection of 35 kV power line of a mine was introduced and main problems were pointed out, namely difficult setting of protection value and matching of up-down time limit which usually lead to faults of protection failure and ...
ZHANG Zhao-hua
doaj   +1 more source

Analysis of Characteristics Over Current Relay and Ground Fault Relay on Feeder Rayon Tabing

open access: yesMATEC Web of Conferences, 2018
The reliability of power distribution of PT PLN (Persero) branch of Padang especially in Rayon Tabing most of the repeaters is still not optimal. This is due to an uncoordinated protection relay on each feeder.
Arzul   +4 more
doaj   +2 more sources

New concept of microprocessor protective devices design [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2010
Transition from electromechanical to digital protective relays is accompanied with serious technical problems. The author offers a new approach in designing the digital relays capable of solving these problems.
Gurevich Vladimir
doaj   +1 more source

METHODOLOGY FOR RELIABILITY ASSESSMENT OF RELAY PROTECTION AND AUTOMATION DEVICES

open access: yesSWorld-Ger Conference proceedings, 2023
Based on the obtained statistical data, an analysis of the reliability of relay protection devices and automation of power supply systems was conducted.
Mykhaylo Fedoriv   +5 more
openaire   +1 more source

Ways to Increase Reliability of Relay Protection and Automation Devices [PDF]

open access: yes, 2023
Рассмотрены способы повышения надежности работы микропроцессорных устройств релейной защиты и автоматики, использующих оптоволоконные каналы связи.Ways to improve the reliability of the operation of microprocessor relay protection and automation ...
Маркевич, В. А.
core  

Intelligent System of Relay Protection of Electrical Network 6-10 kV with the Implementation of Automatic Correction of the Operation Set Point [PDF]

open access: yesProblems of the Regional Energetics, 2023
The purpose of the study is to develop the architecture and working algorithm of intelligent relay protection of an electrical network with an isolated neutral.
Shilin A.A.   +2 more
doaj   +1 more source

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