Results 21 to 30 of about 147,345 (296)
Automatic Calculation and Simulation of Time-Varying Failure Rate of Digital Relay Protection Device
Mathematical Problems in Engineering, 2022 Efficiency is an important indicator of risk assessment, but the failure rate changes with time, which makes risk assessment very difficult. Traditional methods often only measure the steady-state and static indicators of relay protection.
Yuyan Yang
semanticscholar +1 more source
A coordinated relay protection strategy of distribution network based on fault current limiting
Energy Reports, 2022 In order to solve the problem of difficult coordination of traditional overcurrent relay protection caused by short supply radius and little difference of fault current along urban distribution network, a coordinated relay protection strategy based on ...
Qingpeng Zeng +5 more
doaj +1 more source
Protection Coordination Index Assessment Using Fuzzy Logic Controller
Energies, 2022 This paper proposes the assessment method of the protection coordination index (PCI) for overcurrent protection relay and upstream relay. The protection coordination index is an indicator of how properly the equipment is protected by protective relay ...
Choong-Koo Chang +1 more
doaj +1 more source
Simulation Modes Of Relay Protection Devices In Networks With Insulated Neutral [PDF]
EAI Endorsed Transactions on Energy Web, 2017 This program was developed as a universal model of typical devices for protecting electrical networks with insulated neutral. Imitation experiments are executed by the design of working operating and emergency modes. It has been established as in real-world conditions with unselective wearing-outs of protecting as possible.
K. K. Smagulova, U. K. Iskakov
openaire +2 more sources
Research of the system-on-chip-based relay protection technology
Frontiers in Energy Research, 2023 The relay protection device is the core equipment that ensures the safe and stable operation of a power grid. With the open access of a large number of distributed generation, DC transmission and electric vehicles, a new deep low-carbon power system ...
Xiaobo Li, Wei Xi, Yang Yu, Hao Yao
doaj +1 more source
METHODOLOGY FOR RELIABILITY ASSESSMENT OF RELAY PROTECTION AND AUTOMATION DEVICES
SWorld-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
Information, 2023 Current microprocessor-based relay protection and automation (RPA) devices supported by IEC 61850 provide access to a large amount of information on the protected or controlled electric power facility in real time.
Aleksandr Kulikov +2 more
doaj +1 more source
New concept of microprocessor protective devices design [PDF]
Serbian 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
Automatic Relay Protection Calibration Device and System Design for New Intelligent Power Grid
Journal of Physics: Conference Series, 2023 Maintaining the protection device and eliminating the abnormal and fault defects of the device are important tasks for the maintenance of the power system.
Yang Dai +3 more
semanticscholar +1 more source
Zhongguo dianli, 2023 Massive defect text data of relay protection devices is lack of data mining based on professional dictionary. It cannot provide sufficient support for grading, diagnosing, and eliminating relay protection defects, thus unable to meet efficient operation ...
Zhongshuo LIU +7 more
doaj +1 more source