Results 21 to 30 of about 3,414,842 (239)

Quantitative analysis of the influence of asymmetric channel delay on relay protection's reliability

Dianxin kexue, 2019
The asymmetric delay of digital channels has negative effects on line current differential protection in a complex mechanism. Hence, it's necessary to use effective methods to improve the reliability of relay protection.
Huisheng GAO, Qing SHEN
doaj   +2 more sources

Application of evolutionary algorithms for optimal directional overcurrent relay coordination [PDF]

, 2014
Includes bibliographical references.Relay coordination is necessary to ensure that while protection relays operate as fast as possible, they are also able to isolate only the faulted parts of the system from the network, ensuring that a power system ...
Stenane, Ndabeni Moses
core   +1 more source

Design and Implementation of Multifunction Relay Based on Microcontroller

Journal of Techniques, 2021
The power systems are exposed to many abnormal conditions, so an advanced protection system must be provided to stand up to these challenges. Protection devices evolved continuously with the development of power systems.
Ali Abdulsattar Hameed, Ahmed Jasim Sultan, Mehdi F. Booneya   +2 more
doaj   +1 more source

Relay Protection Simulation and Testing of Online Setting Value Modification Based on RTDS

IEEE Access, 2020
Analyzing the feasibility of modifying setting values on the condition of the running line without exiting the protection function is of great importance for 110 kV substations.
Zaixin Yang, Yunmin Wang, Lixin Xing, Baiqing Yin, Jun Tao   +4 more
doaj   +1 more source

Relay Protection Setting Calculation System for Nuclear Power Plant Based on B/S Architecture and Cloud Computing

Energies, 2022
Nuclear power plants have a complex structure and changeable operation mode, which induces low setting calculation efficiency. After analyzing the technology, architecture, and functional logic of a variety of relay protection setting calculation systems
Yuan Hong, You Yu, Jingfu Tian, Han Ye, Bin Wang, Wenxiang Yu   +5 more
doaj   +1 more source

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

E3S 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, Bainiyazov Bakhtybek, Uakhitova Aigul   +2 more
doaj   +1 more source

Microprocessor protection devices: The present and the future [PDF]

Serbian Journal of Electrical Engineering, 2008
Paper presents the analysis of the basic constructive disadvantages of the present day microprocessor-based protective devices (MBR) and offers the basic principles for creating a new MBR that can be used in newly constructed devices.
Gurevich Vladimir
doaj   +1 more source

Detection failure elements in digital relay protection using the example of differential logic protection and the possibility of adaptive protection

Известия высших учебных заведений: Проблемы энергетики
Relevance. The efficiency and reliability of the relay protection system is influenced by many factors, such as: failure of the power switch, malfunction of the relay protection device components, errors in the operation of the current measurement, etc ...
M. V. Sharygin, Ahmed Sahib Naji Jeryo, Ammar Mousa Abdulhasan Alshaheri   +2 more
doaj   +1 more source

An Artificial Neural Network Developed in MATLAB-Simulink for Reconstruction a Distorted Secondary Current Waveform. Part 2

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2022
Recently, there has been an increased interest in the use of artificial neural networks in various branches of the electric power industry including relay protection.
Yu. V. Rumiantsev, F. A. Romaniuk
doaj   +1 more source

Analysis of the neutral grounding modes influence on the reliability characteristics of local systems with renewable energy sources

Diagnostyka, 2021
When comparing the performance indicators of electrical networks with different types of neutral grounding, along with the fulfilment of the requirement to ensure reliability of power supply to consumers, serious attention is drawn to the main network ...
Oleksandr Ostapchuk, Włodzimierz Kruczek, Valeriy Kuznetsov, Vitaliy Vadimovich Kuznetsov, Dmytro Tsyplenkov   +4 more
doaj   +1 more source