Results 21 to 30 of about 229,035 (308)

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

Frontiers 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, Zhang Hua, Gao Yiwen, Huang Yan, Long Cheng, Li Shilong, Zhang Weiwei, Zheng Qin   +7 more
doaj   +1 more source

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

Геодинамика 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

Frontiers 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, Miao Zhang, Kai Gao, Andrew Sabin, Lianjie Huang   +4 more
doaj   +1 more source

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

, 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., Black, M.G., Entwisle, D.C., Page, D.P., Terrington, R.L.   +4 more
core   +2 more sources

Turn-to-turn fault protection technique for synchronous machines without additional voltage transformers [PDF]

, 2017
This paper presents a novel protection technique for the detection of inter-turn faults in synchronous machines. It is based on the calculation of voltage in the stator windings from the usual phases and neutral voltage, typically available in ...
Gyftakis, Konstantinos N., Platero , Carlos A., Redondo, Marte   +2 more
core   +1 more source

Analyses and Comparisons of Generic and User Writing Models of HVDC System Considering Transient DC Current and Voltages

Energies, 2021
Analyses and comparisons of generic models and a novel modeling method of line-commutated converter (LCC)-based high voltage direct current (HVDC) systems are presented for the power system simulator for engineering (PSS/E) simulation tool.
Dohoon Kwon, Youngjin Kim
doaj   +1 more source

Advanced Microgrid Protection Utilizing Zero Sequence Components With Hard-Ware-in-the-Loop Testing

IEEE Access
Microgrid protection and ground fault management are critical aspects of modern power distribution systems, especially with the increasing integration of Distributed Generators (DGs) such as renewable energy sources.
Zahra Ghanem, Feras Alasali, Naser El-Naily, Hassen Loukil, Haytham Y. Mustafa, Saad M. Saad, Abdelaziz Salah Saidi, William Holderbaum   +7 more
doaj   +1 more source

Overvoltages in MV Industrial Grid under Ground Faults

Energy Engineering and Control Systems, 2019
Medium voltage distribution power grids mostly operate with ungrounded neutral points of transformers. The philosophy of these electrical grids is based on the assumption that they are more reliable than grids with grounded neutral.
Yuriy Varetsky
doaj   +1 more source

New On-Line Excitation-System Ground Fault Location Method Tested in a 106 MVA Synchronous Generator [PDF]

, 2014
In this paper, a novel excitation-system ground-fault location method is described and tested in a 106 MVA synchronous machine. In this unit, numerous rotor ground-fault trips took place always about an hour after the synchronization to the network ...
Blánquez Delgado, Francisco, Blázquez García, Francisco, Pardo, Miguel, Platero Gaona, Carlos Antonio, Rebollo López, Emilio   +4 more
core   +1 more source

GROUND FAULT DIAGNOSTICS FOR AUTOMOTIVE ELECTRONIC CONTROL UNITS

International Journal of Prognostics and Health Management, 2023
An electronic control unit (ECU) with a floating ground is not able to receive or transmit messages or participate in controller area network (CAN) communication.
Xinyu Du, Shengbing Jiang, Dongyi Zhou, Alaeddin Bani Milhim, Hossein Sadjadi   +4 more
doaj   +1 more source