scholarly journals Design of a Shielded Core Current

2020 ◽  
Vol 1650 ◽  
pp. 022074
Author(s):  
Mo Zhao ◽  
Wei Wu ◽  
Jinxi Li ◽  
Jinghai Guo ◽  
Yifei Liu ◽  
...  
Keyword(s):  
Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1293 ◽  
Author(s):  
Krzysztof Lowczowski ◽  
Jozef Lorenc ◽  
Jozef Zawodniak ◽  
Grzegorz Dombek

The paper analyzes the utilization of cable screen currents for earth fault identification and location. Attention is paid on cable and mixed feeders—cable and overhead lines. The principle of operation is based on utilization of 3 criterion values: Ratio of cable screen earthing current and zero sequence cable core current—RF110/15, phase shift between cable screen earthing current and zero sequence cable core current—α and cable screen admittance defined as a ratio of cable screen earthing current and zero sequence voltage—Y0cs. Earth fault location is possible thanks to discovered relation between RF110/15 and α, whereas Y0cs allows for reliable detection of earth faults. Detection and identification are very important because it allows to increase the reliability of supply—reduce downtime and number of consumers affected by the fault. The article presents a phase to ground fault current flow for different power system configurations. At the end solution, which improves location capabilities is proposed. The solution is analyzed in PSCAD software and verified by network experiment.


2003 ◽  
Vol 44 (3) ◽  
pp. 397-427 ◽  
Author(s):  
ADRIAN FAVELL

This paper asks whether it is possible to study “elite” professional migrants in Europe with the same concepts and theories being used to explain the incorporation and/or integration of “ethnic” (i.e., non European) migrants in Europe; that is, in terms of their social mobility and social power in their new host countries. While globalisation may in theory make it easier for these professional migrants to transfer their “social capital” to other national contexts, observations of the personal and professional trajectories of European professional migrants in Brussels—particularly their difficulties establishing a true social power in a foreign national—suggests that theorists often overstate their arguments about “global cities” and the decline of the nation-state, at least as far as Europe is concerned. The paper links these empirical concerns with theoretical issues arising from the work of Bourdieu, Mann, Coleman, Castells and Portes, aiming to build a bridge between current work in ethnic and migration studies and core current issues in social theory.


2020 ◽  
Vol 125 (10) ◽  
Author(s):  
M. F. Jong ◽  
L. Steur ◽  
N. Fried ◽  
R. Bol ◽  
S. Kritsotalakis

Author(s):  
Partha Sarathi Mishra ◽  
Soumi Muhuri

Currently, countries are opting for the best solutions for conserving their architectural heritage. The solution may be the intervention of the present architectural heritage, rehabilitation, and reuse of it by maintaining a social-cultural setting and economic stability. However, preserving all sorts of architectural heritage is not possible due to its economic status. Researchers are finding solutions to retain it for the future. For getting solutions, different literature has been identified and analyzed for bibliometric analysis. This chapter offers the bibliometric analysis of the architectural heritage concerning multi-criteria decision-making analysis, which considers qualitative and quantitative parameters in a hierarchy and involves opinions of stakeholders in a transparent manner. This chapter aims to find various themes from the database as the core, current, emerging, and saturated themes for the evaluation of architectural heritage. It also focuses on analyzing the quantification of the articles and conceptualizing of the emerging areas of research.


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