Results 11 to 20 of about 20,881,190 (241)

The structure and composition of exhumed faults, and their implications for seismic processes [PDF]

, 2000
Field studies of faults exhumed from seismogenic depths provide useful data to constrain seismologic models of fault zone processes and properties. Data collected on the San Andreas Fault in the San Gabriel Mountains has shown that large-displacement ...
Robeson, K., Pachell, M.A., Lim, S., Evans, J.P., Shipton, Z.   +4 more
core   +8 more sources

Observer-based Fault Detection and Diagnosis for Mechanical Transmission Systems with Sensorless Variable Speed Drives [PDF]

, 2015
Observer based approaches are commonly embedded in sensorless variable speed drives for the purpose of speed control. It estimates system variables to produce errors or residual signals in conjunction with corresponding measurements. The residual signals
Gu, Fengshou, Ball, Andrew, Zhang, R., Abusaad, Samieh   +3 more
core   +4 more sources

Localising imbalance faults in rotating machinery [PDF]

, 2013
This thesis presents a novel method of locating imbalance faults in rotating machinery through the study of bearing nonlinearities. Localisation in this work is presented as determining which discs/segments of a complex machine are affected with an ...
Walker, Ryan
core   +7 more sources

ROCOV scheme for Fault Detection and Location in HVDC sytems [PDF]

, 2019
Publisher Copyright: © 2019, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.A reliable DC fault protection system is essential for the development of HVDC grids.
Rubio, A., Larruskain, D.M., Abarrategi, O., Perez-Basante, A., Díaz, J.   +4 more
core   +1 more source

Fault-tolerant operation of single-phase SR generators [PDF]

, 1999
This paper studies fault-tolerant operation of multipole single-phase switched reluctance generators (SRGs), in particular, an 8/8-pole switched reluctance machine.
Sawata, T., P.C. Kjaer, Miller, T.J.E., T.J.E. Miller, Cossar, C., T. Sawata, Kjaer, P.C., Hayashi, Y., C. Cossar, Y. Hayashi   +9 more
core   +3 more sources

Fractal Analysis of Power Grid Faults and Cross Correlation for the Faults and Meteorological Factors

IEEE Access, 2020
Power-grid faults pose a great threat to the economy and to social stability. In this paper, the detrended fluctuation analysis method is used to investigate the scaling properties of power grid faults and the correlation between faults and ...
Tejun Zhou, Jiazheng Lu, Bo Li, Yanjun Tan   +3 more
doaj   +1 more source

Fault Diagnosis on Medium Voltage (MV) Electric Power Distribution Networks: The Case of the Downstream Network of the AES-SONEL Ngousso Sub-Station

Energies, 2009
An analysis of the Medium Voltage (MV)electricity power distribution network operated by Cameroon’s AES-SONEL company shows that losses are very high due to energy which is produced but not distributed and that the duration of power interruptions as a ...
Thomas Tamo Tatietse, Joseph Voufo
doaj   +1 more source

Effects of power electronics devices on the energy quality of an administrative building [PDF]

, 2019
This paper proposes the analysis of the effects of power electronics devices on the energy quality of an administrative building. For the study a method is applied that allows the analysis of the main problems of energy quality such as voltage ...
Gómez Sarduy, Julio R., Viego Felipe, Percy R., Viego, Percy R., Quispe, Enrique C., Sarmiento Crespo, Paulo Cesar, Viego, Percy, Sarmiento, Paulo, Silva, Jorge I., Enrique C. Quispe, Paulo Sarmiento, Sousa Santos, Vladimir, Sarmiento Crespo, Paulo César, Sousa, Vladimir, Silva Ortega, Jorge Iván, Quispe Oqueña, Enrique Ciro, Quispe, Enrique Ciro, Gómez Sarduy, Julio Rafael, Percy R. Viego, Jorge I. Silva, Vladimir Sousa, Julio R. Gómez, Gómez, Julio R.   +21 more
core   +1 more source

Fault classification in power systems using EMD and SVM

Ain Shams Engineering Journal, 2017
In recent years, power quality has become the main concern in power system engineering. Classification of power system faults is the first stage for improving power quality and ensuring the system protection.
N. Ramesh Babu, B. Jagan Mohan
doaj   +1 more source

Frequency dynamics during high CCGT and wind penetrations [PDF]

, 2011
Presented at AUPEC 2011, Australasian Universities Power Engineering Conference, Brisbane, Australia, 25 - 28 September 2011Frequency stability is the paramount concern for secure and reliable operation of a power system. High wind penetration levels are
Flynn, Damian, Meegahapola, Lasantha
core   +1 more source