Results 1 to 10 of about 36,891 (314)

Estimation of the Structural and Geomechanical Anisotropy in Fault Gouges Using 3D Micro-Computed Tomography (μ-CT)

Sensors, 2020
Fault gouges play an important role in the shear deformation of fault zones, by causing weakness and frictional instability in structures. Previous studies have investigated the evolution of shear deformation of fault zones by observing experiments using
Eomzi Yang, Tae Sup Yun, Kwang Yeom Kim, Seong Woo Moon, Yong-Seok Seo   +4 more
doaj   +1 more source

A Single-Ended Protection Scheme for Flexible HVdc Transmission Lines Based on the Fréchet Distance of the Rate of Change of Fault Voltage Traveling Waves

IEEE Access
Flexible DC transmission technology is a technical solution for the large-scale integration of renewable energy. To ensure the stable operation of transmission systems, the rapid and selective protection of transmission lines is crucial.
Hui Qin, Faxi Peng, Zhen Pan, Yilin Zhong, Tao Liu, Runbin Cao   +5 more
doaj   +1 more source

Local Buckling Failure of Buried Pipeline under the Action of Oblique-slip Fault

Shiyou jixie, 2022
In practice,many pipelines will cross oblique-slip faults,but presently there is little research on the buckling failure of buried pipelines under the action of both horizontal and vertical oblique-slip faults.Therefore,based on ABAQUS finite element ...
Chen Yanhua, Wu Kangkang
doaj  

Controlling the Effects of an Internal Arc Fault and Benefits of Active Arc Protection in Low-Voltage Switchgear Assemblies

IEEE Access
Internal arcs in low-voltage switchgear assemblies are rare; however, when they appear, they produce high temperatures and pressures, and emit light, noise, and toxic gases.
Sebastian Berhausen, Rafal Burzynski
doaj   +1 more source

PHASE ANGLE SHIFT AND SLOPE BASED RESTRAINT FOR INDIRECT SYMMETRICAL PHASE SHIFT TRANSFORMER PROTECTION

Journal of Engineering and Sustainable Development
This study presents a method to limit the functioning of the differential relay during the different operating conditions of an Indirect Symmetrical Phase Shift Transformer (ISPST).
Shailendra Kumar Bhasker, Manoj Tripathy
doaj   +1 more source

A Lissajous Curve–Based Method for Busbar Protection

International Transactions on Electrical Energy Systems
In this paper, a novel time-domain method based on the orientation analysis of the superimposed current component Lissajous curves is presented for busbar protection.
M. Sarlak
doaj   +1 more source

An empirical comparison of the fault-detection capabilities of internal oracles

2013 IEEE 24th International Symposium on Software Reliability Engineering (ISSRE), 2013
Modern computer systems are prone to various classes of runtime faults due to their reliance on features such as concurrency and peripheral devices such as sensors. Testing remains a common method for uncovering faults in these systems, but many runtime faults are difficult to detect using typical testing oracles that monitor only program output.
Tingting Yu 0001, Witawas Srisa-an, Gregg Rothermel   +2 more
openaire   +2 more sources

Fault structure characteristics and fracture development patterns in Xujiahe Formation of Tongjiang-Maolubei area, northwestern Sichuan Basin

Shiyou shiyan dizhi
Multiple phases of fault structures are developed in the fault-fracture gas reservoirs of the Xujiahe Formation in the Tongjiang-Malubei area, northeastern Sichuan Basin.
Xuefeng YIN, Ming LIU
doaj   +1 more source

Research of a New Criterion of Main Protection of Transformer

Gong-kuang zidonghua, 2012
In view of problems that traditional main protection of transformer cannot identify inrush current and internal fault current of transformer, the paper proposed a new criterion of main protection of transformer based on dead angle of differential current.
HE Ren-wang, XIE Wei, SONG Hai-yan, WU Xun   +3 more
doaj  

A pilot protection method for the transmission line of wind farm-flexible DC system based on high-frequency inductance difference coefficients

International Journal of Electrical Power & Energy Systems
Conventional protection schemes for wind farm-flexible flexible direct current (DC) system transmission lines are susceptible to malfunctions in external fault scenarios and exhibit limited immunity to fault resistance in internal fault scenarios. In the
Jing Ma, Zhuoer Gao, Guojie Xu, Jie Li, Kun Qian, Yufeng Zhao   +5 more
doaj   +1 more source