Results 1 to 10 of about 1,023,955 (207)
Energies, 2021 In this paper, the authors have developed a hardware model for blocking even and odd harmonics of a power transformer. In the proposed hardware model, intelligent differential & over-current relays are used for the blocking of harmonics of a power ...
Abdul Azeem +4 more
doaj +1 more source
All-optical differential current detection technique for unit protection applications [PDF]
, 2013 In this paper we demonstrate a novel, all-optical differential current protection scheme. By monitoring the optical power reflected from two matched hybrid fiber Bragg grating current sensors and using a simple optoelectronic threshold detector, an ...
Fusiek, Grzegorz +3 more
core +1 more source
Optimizing the roles of unit and non-unit protection methods within DC microgrids [PDF]
, 2012 The characteristic behavior of physically compact, multiterminal dc networks under electrical fault conditions can produce demanding protection requirements.
Burt, Graeme +4 more
core +1 more source
Countermeasures for current differential protection in 5G-based active distribution network under sampling data missing scenario [PDF]
电力工程技术, 2022 Compared with the traditional three-section current protection,the current differential protection can improve the protection performance as a whole in the active distribution network,but reduce the wide coverage of fibre channel .
TU Qi +5 more
doaj +1 more source
Optimization of force-limiting seismic devices connecting structural subsystems [PDF]
, 2016 This paper is focused on the optimum design of an original force-limiting floor anchorage system for the seismic protection of reinforced concrete (RC) dual wall-frame buildings.
Fleischman, Robert B. +4 more
core +1 more source
HV Transformer Protection and Stabilization under Geomagnetically Induced Currents
Energies, 2020 This paper presents the results of research related to the issues arising from DC excitation of power transformers due to geomagnetically induced currents (GIC). First, the GIC phenomena and their influence on power system operation are discussed.
Daniel Bejmert +3 more
doaj +1 more source
IEEE Access, 2021 Inrush current with high amplitude is generated when the transformer is energized. On the one hand, it will have a negative impact on the safety of the transformer itself, and even cause the relay protection to malfunction.
Yuanlin Pan +5 more
doaj +1 more source
Differential Protection Scheme for Power Transformer Protection
, 2021 Power transformers are normally protected by differential protection relays. Differential protection is the main protection used for protecting power transformers from internal faults only. External faults have the same effect on the two sets of current transformers used for differential protection.
Kaustubh Sonar +2 more
openaire +1 more source
A New GPS-based Digital Protection System for Smart Grids in Loop Structure
EAI Endorsed Transactions on Energy Web, 2014 This paper presents a new digital protection system to solve the protection challenges in future smart grids, i.e., fast protection and fault isolation in a loop-structured system with limited magnitude of fault current.
X. Liu, M. Steurer, M. Yu
doaj +1 more source
电力工程技术, 2022 In order to increase the transmission capacity of the new energy grid-connected transformer,a two-voltage three-winding transformer with star-angle-angle connection form is adopted.
XING Wu +3 more
doaj +1 more source