Results 21 to 30 of about 2,858,375 (353)

Characterization of electric faults in photovoltaic array systems

open access: yesDyna, 2019
Electric faults in photovoltaic (PV) systems cause negative economic and safety impacts, reducing their performance and causing unwanted electric connections that can be dangerous for the user.
Andres Eduardo Nieto Vallejo   +2 more
doaj   +1 more source

Analysis of Single-Phase-to-Ground Faults at the Valve-Side of HB-MMCs in HVDC Systems

open access: yesIEEE transactions on industrial electronics (1982. Print), 2019
Although the probability of occurrence of station internal ac grounding faults in modular multilevel converter (MMC)-based high-voltage direct-current systems is low, they may lead to severe consequences that should be considered when designing ...
Gen Li   +4 more
semanticscholar   +1 more source

Influence of High-Speed Train Power Consumption and Arc Fault Resistances on a Novel Ground Fault Location Method for 2 × 25 kV Railway Power Supply Systems

open access: yesEnergies, 2018
The 2 × 25 kV power supply system is the most frequently used traction rail system to provide the huge power needed by high-speed trains.
Carlos A. Platero   +3 more
doaj   +1 more source

Benefits of a 3D geological model for major tunnelling works : an example from Farringdon, east-central London, UK [PDF]

open access: yes, 2012
In the design of major construction works, the better the ground conditions are known, the more control there is on the assessment of risks for construction, contract and personnel, and ultimately on final costs. Understanding of the ground conditions is
Aldiss, D.T.   +4 more
core   +2 more sources

Land subsidence, Ground Fissures and Buried Faults: InSAR Monitoring of Ciudad Guzmán (Jalisco, Mexico)

open access: yesRemote Sensing, 2015
We study land subsidence processes and the associated ground fissuring, affecting an active graben filled by thick unconsolidated deposits by means of InSAR techniques and fieldwork.
Carlo Alberto Brunori   +8 more
doaj   +1 more source

The classification model for identifying single-phase earth ground faults in the distribution network jointly driven by physical model and machine learning

open access: yesFrontiers in Energy Research, 2023
Single-phase earth ground faults are the most frequent faults likely to occur but hard to identify in a distribution system, especially in a neutral ineffectively grounded system.
Su Xueneng   +7 more
doaj   +1 more source

Recent anomalous deformation of the ground surface in fault zones: shear or tensile faulting?

open access: yesГеодинамика и тектонофизика, 2018
Various definitions of the kinematic types of faults are reviewed. The degree of symmetry in the distribution of anomalous displacements of the ground surface is proposed as a morphological criterion for identifying the types of faults based on geodetic ...
Yu. O. Kuzmin
doaj   +1 more source

Imaging Complex Subsurface Structures for Geothermal Exploration at Pirouette Mountain and Eleven-Mile Canyon in Nevada

open access: yesFrontiers in Earth Science, 2021
Accurate imaging of subsurface complex structures with faults is crucial for geothermal exploration because faults are generally the primary conduit of hydrothermal flow.
Yunsong Huang   +4 more
doaj   +1 more source

Thermal Effects of Ground Faults on MV Joints and Cables

open access: yesEnergies, 2019
In recent years, an anomalous increase of faults in underground medium voltage (MV) cable lines has been recorded in Italy, especially during summer; the largest number of faults affected cable joints.
T. Bragatto   +5 more
semanticscholar   +1 more source

Detection of inter-turn faults in multi-phase ferrite-PM assisted synchronous reluctance machine [PDF]

open access: yes, 2019
Inter-turn winding faults in five-phase ferrite-permanent magnet-assisted synchronous reluctance motors (fPMa-SynRMs) can lead to catastrophic consequences if not detected in a timely manner, since they can quickly progress into more severe short-circuit
Candelo Zuluaga, Carlos Andres   +3 more
core   +2 more sources

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