Results 11 to 20 of about 306,356 (268)

Three-Phase Transformer Inrush Current Reduction Strategy Based on Prefluxing and Controlled Switching

open access: yesIEEE 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

Countermeasures for current differential protection in 5G-based active distribution network under sampling data missing scenario [PDF]

open access: yes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

Transformer Differential Protection

open access: yesEuropean Journal of Engineering and Technology Research, 2020
Overcurrent and earth fault protective equipment employing time grading and directional detection cannot provide correct discrimination on all power networks and in many cases clearing times for some faults would not be acceptable. Differential protection is an alternative overcurrent protective scheme, which is used to protect individual sections of ...
Edwin Ejiofor Ezema, Aniagboso John Onah
openaire   +1 more source

A new criterion for inter-turn short-circuit fault recognition for new energy grid-connected transformer

open access: yes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

Differential Protection Scheme for Power Transformer Protection

open access: yes, 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   +2 more sources

Fasting and differential chemotherapy protection in patients [PDF]

open access: yesCell Cycle, 2010
Chronic calorie restriction has been known for decades to prevent or retard cancer growth, but its weight-loss effect and the potential problems associated with combining it with chemotherapy have prevented its clinical application. Based on the discovery in model organisms that short term starvation (STS or fasting) causes a rapid switch of cells to a
Raffaghello L   +5 more
openaire   +5 more sources

A New GPS-based Digital Protection System for Smart Grids in Loop Structure

open access: yesEAI 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

Distribution Network Differential Protection Technology Based on 5G Communication and Improved DTW

open access: yesJournal of Harbin University of Science and Technology, 2023
With a large number of distributed power generations connected to the distribution network, the distribution network has gradually transformed into a multi-source and multi-terminal network, and the requirements for relay protection performance are ...
YU Yang   +5 more
doaj   +1 more source

Natural differential privacy—a perspective on protection guarantees

open access: yesPeerJ Computer Science, 2023
We introduce “Natural” differential privacy (NDP)—which utilizes features of existing hardware architecture to implement differentially private computations. We show that NDP both guarantees strong bounds on privacy loss and constitutes a practical exception to no-free-lunch theorems on privacy.
Micah Altman, Aloni Cohen
openaire   +4 more sources

Deep Learning-Based Algorithm for Internal Fault Detection of Power Transformers during Inrush Current at Distribution Substations

open access: yesEnergies
The reliability and stability of differential protection in power transformers could be threatened by several types of inferences, including magnetizing inrush currents, current transformer saturation, and overexcitation from external faults.
Sopheap Key, Gyu-Won Son, Soon-Ryul Nam
doaj   +1 more source

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