Results 31 to 40 of about 667,676 (300)

Line Pilot Protection of Flexible DC Grid Based on Traveling-Wave JS Divergence

open access: yesIEEE Access, 2022
The proportion of renewable energy mainly including hydropower, photovoltaic and wind power is growing rapidly. DC transmission technology has become the main tool of new energy transmission.
Chunxiang Mao   +4 more
doaj   +1 more source

Protection of transmission lines using fault component integrated power

open access: yesIET Generation, Transmission & Distribution, 2014
In this study, a novel scheme is proposed for pilot protection of transmission line based on the fault component integrated power (FCIP). An appropriate definition is proposed for FCIP. The proposed scheme is able to quickly discriminate the normal condition, internal fault and external fault situations, even in severe operating and emergency ...
Tohid Ghanizadeh Bolandi   +2 more
openaire   +1 more source

A systematic evaluation of network protection responses in future converter-dominated power systems [PDF]

open access: yes, 2016
This paper illustrates how converter interfaces, used to connect renewable energy sources, HVDC links and infeeds to the power system, may bring significant changes to the behaviour of protection systems in the future.
Booth, C.   +5 more
core   +2 more sources

A Review on Materials for Flame Retarding and Improving the Thermal Stability of Lithium Ion Batteries

open access: yesInternational Journal of Electrochemical Science, 2020
Lithium-ion batteries (LIBs), featured by high energy density, high power density, excellent cycle performance and environmental friendliness, are widely used in electric equipment, electric vehicles and energy storage.
Fei Gao   +6 more
doaj   +1 more source

Application research on pilot protection method for multi‐terminal hybrid line‐commutated converter/modular multilever converter‐based high voltage DC system

open access: yesIET Generation, Transmission & Distribution, 2021
The multi‐terminal hybrid line commutated converter (LCC)/modular multilevel converter (MMC)‐based high voltage dc (HVDC) has been applied to solve the simultaneous commutation failure problem in East China.
Chenhao Zhang   +6 more
doaj   +1 more source

Human reliability analysis in maintenance team of power transmission system protection [PDF]

open access: yesProtection and Control of Modern Power Systems, 2020
AbstractThe requirement for reliable electrical energy supply increases continuously because of its vital role in our lives. However, events due to various factors in the power grid can cause energy supply to be interrupted. One of these factors is human error and thus human reliability analysis is a serious element in the industry.
Mehdi Tavakoli, Mehdi Nafar
openaire   +1 more source

Effect of cross-country fault of distance protection in transmission line with different voltage levels [PDF]

open access: yes, 2014
Transmission overhead line is one of the main elements in electric power system. Electrical power system comprises of generation, transmission and distribution. For transmission lines, it is used to transmit electric power to large load center. Nowadays,
Abdul Karim, Sazali P.   +4 more
core  

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Nano‐kaolin enhances the mechanical, electrical, and thermal properties of cellulose insulating paper

open access: yesHigh Voltage
There is an extremely urgent demand in the realm of power equipment, including power transformers, motors, and cables. Specifically, there is a pressing need for cellulose‐based composite insulating paper that can exhibit high thermal conductivity ...
Wenchang Wei   +9 more
doaj   +1 more source

A novel non‐unit protection scheme for HVDC transmission lines based on multi‐resolution morphology gradient

open access: yesIET Generation, Transmission & Distribution, 2021
This paper presents a novel non‐unit protection scheme for the protection of LCC‐HVDC transmission lines. The fault‐generated travelling waves at the faulty line ends are filtered by a filter–reactor unit.
Vahid Raghpoor   +2 more
doaj   +1 more source

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