Results 11 to 20 of about 929,929 (317)
Environment protection: The current challenge in radioecology [PDF]
EPJ Web of Conferences, 2012 Radioecology, a multifaceted scientific discipline which addresses environmental issues relevant to radioprotection, has for a long time been focused on environmental transfers through the environment to feed the needs of human radioprotection.
Bréchignac F.
doaj +2 more sources
Analysis of current protection in distribution networks with clean energy access
Frontiers in Energy Research, 2023 With the rapid development of the new energy industry, distributed generation (DG) is connected to the power grid on a large scale, and the traditional relay protection scheme is no longer suitable for modern power systems. In order to solve this problem,
Huang Kun +5 more
doaj +1 more source
Analysis on Application of Impressed Current Cathodic Protection for Buried Pipelines under AC Interference [PDF]
Cailiao Baohu, 2022 In order to study the effectiveness of pipeline cathodic protection system in preventing AC interference corrosion under AC interference， the testing device for stray current interference of buried steel pipelines was established， and the influence of ...
GUO Yong, DING Jifeng, GAO Zhixian, YIN An, ZHANG Bo, YANG Chaohui, LI Xiangyang
doaj +1 more source
Researching the Blocking of Current Protection of Electrical Power Units with Transformers
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2020 The magnetizing current inrush appears in electrical power units equipped with transformers in case of no-load energizing of the power transformers and in a number of other cases.
F. A. Romaniuk +4 more
doaj +1 more source
IET Generation, Transmission & Distribution, 2023 The algorithms of the present generation of practical differential relays are based on two methods. The first method is based on the ratio of the harmonic content of the differential current, and the second one is based on the length of the time interval
Ali Sahebi +4 more
doaj +1 more source
The Impact of DG Access on Microgrid Current Protection
发电技术, 2019 When distributed generator (DG) is connected to the microgrid, the microgrid will change from single source system to multiple source system, which will change the power flow distribution and fault short-circuit current flow of the original network, the ...
Jing DING +4 more
doaj +1 more source
Mechanism Analysis and Multiphysics Validation of Lightning Attenuation in Constrained Space
IEEE Access, 2022 The problem of resistance reduction has always been the key and difficult point of lightning protection. However, the problem of reducing the grounding resistance efficiently has not been solved. A method is introduced in this paper to solve this problem
Yang Lu +3 more
doaj +1 more source
Rheology and Microstructure of Shear Thickening Fluid Suspoemulsions
Applied Rheology, 2014 A novel shear thickening suspoemulsion is formulated and studied with a new rheo-microscope instrument. The experimental fluid system is comprised of a immiscible blend of Newtonian, low molecular weight poly(dimethylsiloxane) and a shear thickening ...
Wagner Norman J. +2 more
doaj +1 more source
Research of protection for AC transmission lines based on characteristic of grid-side inverter
The Journal of Engineering, 2019 With the advantage of saving resources and high utilisation, DC transmission becomes the vital part of the sustainable development. However, due to the control strategies of grid-side inverter, the fault characteristics of the grid will change ...
Ning Huang, Chunju Fan, Shan Jiang
doaj +1 more source
Study on the IGBT Overcurrent Failure of VSC-HVDC Converter Valve
Zhongguo dianli, 2021 IGBT overcurrent failure, which is one of the important factors harming VSC-HVDC safe operation, can easily lead to module explosion, water cooling system leakage and even the converter valve shutdown.
Jingbo FENG +4 more
doaj +1 more source