Results 11 to 20 of about 147,345 (296)

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

Diance 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, SHENG Haihua, WU Jiayi, ZHENG Ran, WANG Junhui, YIN Huan, YIN Jianjun   +6 more
doaj   +2 more sources

Risk Assessment of Smart Substation Relay Protection System Based on Markov Model and Risk Transfer Network

Energies, 2020
To effectively guarantee a secure and stable operation of a smart substation, it is essential to develop a relay protection system considering the real-time online operation state evaluation and the risk assessment of that substation.
Dongliang Nan, Weiqing Wang, Rabea Jamil Mahfoud, Hassan Haes Alhelou, Pierluigi Siano, Mimmo Parente, Lu Zhang   +6 more
doaj   +3 more sources

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

Gong-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, ZHOU Mengran, XIEYing, WANG Pingping, CAO Zhenguan, LUO Qian   +5 more
doaj   +2 more sources

Adjustment Factor Model of Relay Protection Equipment Failure Rate Based on Data Fitting

Zhongguo dianli, 2021
Analyzing the impact of equipment maintenance on the failure rate of relay protection equipment is helpful to the formulation of relay protection equipment maintenance plans and the realization of long-term stable and reliable operation of the power grid.
Huping YANG, Huang HUANG, Zhiqin HE, Yang ZHANG, Wensi YANG, Rui ZHOU   +5 more
doaj   +2 more sources

Improvement of algorithms for voltage circuits fault detection in relay protection terminal of 6-35 kV electrical networks [PDF]

E3S Web of Conferences, 2019
Issues of increase of consumer power supply reliability by prevention of protection device false operation and unreasonable tripping of the protected network element at malfunction of measuring voltage transformer secondary circuits are considered ...
Vukolov Vladimir, Obalin Mikhail, Petrov Anton   +2 more
doaj   +2 more sources

Fault Tracking Method for Relay Protection Devices [PDF]

Energies, 2021
A method of fault tracking for relay protection devices is presented in this paper. Fault tracking means that after the failure of relay protection devices, the anomalies and warning information are obtained through data-mining technology, and then, the fault tracking algorithm is used to find the cause of failure.
Qing Chen, Xiaotong Zhou, Mengxuan Sun, Xiaotong Zhang   +3 more
openaire   +2 more sources

Design of Motor Protection Device Based on Dual-CPU

Gong-kuang zidonghua, 2011
The paper introduced a design scheme of motor protection device based on dual-CPU of DSP56F807 and W78E516B, and analyzed circuit designs of main control board and man-machine interaction board and protection algorithm of the device.
WEN Yang-dong, YU Jia
doaj   +1 more source

Determination of the speed of a microprocessor relay protection device of open architecture with a reed switch and the industrial internet of things

Eastern-European Journal of Enterprise Technologies, 2023
The paper presents the development of a microprocessor-based relay protection device on open architecture. Currently, there is a problem with modern microprocessor relay protection: the impossibility to replace the damaged element with alternatives from ...
A. Neftissov, Assiya Sarinova, I. Kazambayev, L. Kirichenko, Oleksandr Kuchanskyi, A. Faizullin   +5 more
semanticscholar   +1 more source

Research on the remote automatic test technology of the full link of the substation relay protection fault information system

Energy Reports, 2022
In view of the fact that the actual operation information of sub-station relay protection device and the point table information of relay protection fault information system are still manually point-by-point proof reading.
Dongliang Nan, Jinlong Tan, Lu Zhang, Jaydar Jingus, Chang Wang, Weilin Liu   +5 more
doaj   +1 more source

Relay protection devices functionality comparative analysis

Herald of Advanced Information Technology, 2023
With the development of technology, there has been an evolution in the electrical power industry, replacing conventional electromechanical relays with more advanced devices. Multifunctional microprocessor relay protection terminals became such innovations.
Sergiy M. Radimov, Valerii P. Plis
openaire   +1 more source