Results 21 to 30 of about 1,033,556 (314)
Several Methods of Reducing Discharge Energy for Intrinsic Safety Power Supply
Meikuang Anquan, 2020 In order to reduce the discharge spark energy of the intrinsic safety power supply, several measures are proposed in this paper. When the over-current protection occurs, DC-DC or AC-DC module should be turned off as quickly as possible, and the ...
DONG Jianguo, LI Yanmin, ZHOU Xingdong, ZHANG Lei
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Workplace Whistleblower Protection in Poland: Current Situation and Perspectives [PDF]
, 2021 The chapter analyses the current legal situation of whistleblowers in work-related context in Poland. Protection of whistleblowers is not regulated by a single comprehensive legal act but may be granted on the basis of different pieces of legislation as ...
Skupień, Dagmara
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Optimal coordination of over-current relays in microgrids considering multiple characteristic curves
Alexandria Engineering Journal, 2021 Nowadays, microgrids play a significant role in the development of modern distribution networks (DNs). In this context, the ever increasing presence of renewable distributed generation (DG) in microgrids has imposed new challenges in protection ...
Sergio D. Saldarriaga-Zuluaga +2 more
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Design of protection module of intrinsic safety power supply based on LT4356
Gong-kuang zidonghua, 2014 In view of problems of simple protection function, low conversion efficiency, poor anti-interference ability and low intrinsic safety current existed in current protection module of intrinsic safety power supply, a protection module of intrinsic safety ...
XIE Guojun +3 more
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Design analysis of mine-used intrinsic safety power supply
Gong-kuang zidonghua, 2014 In view of requirements that intrinsic safety power supply must has multi-protection of over-current and over-voltage, the paper introduced working principle of a circuit of mine-used intrinsic safety power supply based on LM317 regulator, analyzed ...
LIU Qi
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AC Microgrids Protection: A Digital Coordinated Adaptive Scheme
Applied Sciences, 2021 A significant challenge for designing a coordinated and effective protection architecture of a microgrid (MG) is the aim of an efficient, reliable, and fast protection scheme for both the grid-connected and islanded modes of operation.
Noor Hussain +6 more
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Protection coordination of directional over current relay with distributed generation
Indonesian 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
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A novel chopping current protection circuit for intrinsically safe power supply
Gong-kuang zidonghua, 2016 For problems that traditional chopping current protection circuit had small cut-off current value and poor anti load impact ability, and needed additional recovery circuit or manual circuit after over-current fault, a novel chopping current protection ...
FANG Xupeng +4 more
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Energy Reports, 2022 Under the development trend of AC/DC hybrid power grids, converter transformers are indispensable as AC/DC conversion equipment, whose safety and stability are particularly important.
Yuanlin Pan +5 more
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Gong-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
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