Results 11 to 20 of about 758,769 (308)

An Improved Inverse-Time Over-Current Protection Method for a Microgrid with Optimized Acceleration and Coordination [PDF]

open access: goldEnergies, 2020
This paper presents an improved inverse-time over-current protection method based on the compound fault acceleration factor and the beetle antennae search (BAS) optimization method for a microgrid.
Liang Ji   +7 more
doaj   +2 more sources

Sequences selection research on over-voltage and over-current protection for intrinsic safety power supply

open access: greenGong-kuang zidonghua, 2019
Over-voltage and over-current protection are two forms of over-voltage and over-current protection sequences of intrinsic safety power supply. In order to study the influence of different protection sequence forms on safety performance of intrinsic ...
BAO Changjun   +4 more
doaj   +2 more sources

Development of fast electronic over-current protection circuit using current-adjustable sensing method

open access: goldAdvances in Mechanical Engineering, 2018
Traditional methods to protect the electric-driven facilities from overload or short circuit usually use electronic breaker or fuse. However, the reaction time for these devices normally require more than 0.1 s that may be not sufficiently fast to ...
Hsiung-Cheng Lin   +3 more
doaj   +2 more sources

Protection coordination of directional over current relay with distributed generation

open access: diamondIndonesian Journal of Electrical Engineering and Computer Science, 2022
The present <span lang="EN-US">study is focussed on a comparative analysis of different meta-heuristic optimization approaches for directional overcurrent relay (DOCRs) coordination which has been discussed and presented in the literature. Further, to have a comparative analysis of the performance of the optimization methods discussed they have ...
Tripathi, Jayant Mani   +6 more
openaire   +3 more sources

An Improved Communication-Free Dual Characteristic Over Current-Based Protection Scheme for AC Microgrids

open access: goldInternational Transactions on Electrical Energy Systems
The entry of distributed generation causes the network to become complicated, and as a result, the protection coordination between the network equipment is lost.
Hossein Mohammadi Panah   +2 more
doaj   +2 more sources

Study on the IGBT Overcurrent Failure of VSC-HVDC Converter Valve

open access: yesZhongguo dianli, 2021
IGBT overcurrent failure, which is one of the important factors harming VSC-HVDC safe operation, can easily lead to module explosion, water cooling system leakage and even the converter valve shutdown.
Jingbo FENG   +4 more
doaj   +1 more source

Assesment of over-current protection for superconducting cables [PDF]

open access: yesIET Conference Proceedings, 2022
The objectives of the studies presented in this paper aim to assess the sensitivity and the stability margins of conventional overcurrent protection schemes for the protection of Superconducting Cables with High Temperature Superconducting tapes. The ultimate goal is to identify the limitations and particularities of the conventional over-current ...
Tsotsopoulou, Eleni   +2 more
openaire   +2 more sources

Design of an Over Current Relay (OCR) System on a Distribution Network Using a Raspberry Pi

open access: yesJournal Geuthee of Engineering and Energy, 2023
Disturbances in the electrical installation system will be detrimental to electricity users because it can cause power outages. Therefore we need a protection system that can overcome disturbances such as the use of Over Current Relay (OCR). With OCR can
Yuli Prasetyo   +3 more
doaj   +1 more source

Protection Analysis of a Traveling-Wave, Machine-Learning Protection Scheme for Distributions Systems With Variable Penetration of Solar PV

open access: yesIEEE Access, 2023
This work provides a detailed protection analysis of a fast, Traveling-Wave (TW), Machine-Learning (ML), local, non-directional, economic, and setting-less protection scheme.
Miguel Jimenez-Aparicio   +3 more
doaj   +1 more source

Design and Implementation of an over Current Protection Laboratory for Electrical Power Transmission Systems Based on PLC Techniques

open access: yesTikrit Journal of Engineering Sciences, 2017
This paper describes a modern approach for the protection of transmission lines to ensure their safety against the faults occurred in power systems. Our approach uses a Programmable Logic Controller (PLC) to realize a transmission line as an over current
Hassaan Th. H. Thabet, Ahmed A. Allu
doaj   +3 more sources

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