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Search results for: fault
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Year: 2010, Volume: 10, Issue: 2
... constraints, and not by the oriented aspects (description logic for argument querying limitations of the available technologies. and the AIF ontology for supply chain integration). Fault tree analysis, for the analytical decomposition of the relevant steps in the process flow of a food product, and ACKNOWLEDGMENTS fuzzy logic, for quantitative measures of ...
Year: 2010, Volume: 10, Issue: 2
... LTE system. It is the IP point of (Packet Data Network) connection, or the decision whether attachment for the UE, in networking this is called default roaming to a particular visited network for a user is allowed gateway. The P-GW allocates the IP address to the UE, that or not. 109 Advances ...
Year: 2010, Volume: 10, Issue: 2
... two sections of the line may be considered II. FAULTS ON OVERHEAD LINE infinite, in which case the ... , 2010 About the Coupling Factor Influence on the Ground Fault Current Distribution on Overhead Transmission Lines Maria VINTAN L ... with mutual coupling between phase the coupling factor between the faulted phase and the ground conductors and ground wire. ...
Year: 2010, Volume: 10, Issue: 2
... where Wk    v cut ï€in  is ready to generate (that is, not out of service). Availability includes downtime for any reasons (faults, repairs, .  rated  maintenance, upgrades). The duration of downtimes, caused by malfunctions, are dependent on necessary repair work, ...
Year: 2010, Volume: 10, Issue: 2
... be some 3% higher than with IM drives, but special precautions must be taken to limit overvoltage when the inverter trips at high speed or to separate a faulty inverter from the motor, as the excitation cannot be terminated. Field weakening for minimising the stator current in the voltage-control region and for constant- voltage operation ...
Year: 2010, Volume: 10, Issue: 3
... in this field. operate in 32% of such faults. Table 1 provides typical fault currents on different ... 10, Number 3, 2010 Approaches in High Impedance Fault Detection A Chronological Review M. SEDIGHIZADEH1,2 ... and current for each feeder. Its polarity identified the faulty feeder. In [220], the Analysis ...
Year: 2010, Volume: 10, Issue: 3
... the complexity of avoided. When electric power system operates from normal different types of faults in electric power system, there still state to failure or abnormal, its ... Advances in Electrical and Computer Engineering Volume 10, Number 3, 2010 PCA Fault Feature Extraction in Complex Electric Power Systems Yagang ZHANG, Zengping WANG, Jinfang ...
Year: 2010, Volume: 10, Issue: 3
... of the failures are mechanical in nature, such as N 1 bearing, mechanical faults in rotors, imbalance, and alignment-related problems [4-8] σ= N ... 17] Samanta B, Al-Balushi KR (2003) Artificial neural network based REFERENCES fault diagnostics of rolling element bearings using time-domain features. Mech Syst Signal Processing 17 ...
Year: 2010, Volume: 10, Issue: 3
... system computational challenges posed then [11]- internal faults in a power transformer. This method uses a ... , Number 3, 2010 Detailed Simulation of Transformer Internal Fault in Power System by Diakoptical Concept Amangaldi KOOCHAKI, ... converted to the L s, Lm. A.3. Faulty Transformer Model In order to model a transformer with ...
Year: 2010, Volume: 10, Issue: 1
... on graph theory and multivariate behavior. A system with faults does not necessarily imply statistical analysis theory, we ... 10, Number 1, 2010 Recent Research Progress in Fault Analysis of Complex Electric Power Systems Zengping WANG, ... T1 T2 T3 through fault analysis of fault component and non-fault Gen1 1.0100 0.7275 0.6924 0.6814 0.6747 component. Gen2 ...
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