Results 211 to 220 of about 1,597 (258)
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A least square regression based fault locator for unbalanced faults on a transmission line
IET Conference Proceedings, 2022Associated with the sequence analysis of voltage measurement at one end of a transmission line, least square regression (LSR) is applied to determine the fault locations of this line under unbalanced faults in a non-radial wind power integrated electrical grid.
Zhang, Shuo +2 more
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Emulation of an Induction Machine for Unbalanced Grid Faults
IEEE Transactions on Industry Applications, 2021A laboratory power level 5.0 hp induction machine emulation with grid interface for various asymmetric fault transients is implemented in this article. It is done in real time with power-hardware-in-loop (PHIL) technology. The PHIL emulation procedure permits the testing of complex control strategies of an ac microgrid while determining the machine ...
Gayatri Tanuku, Pragasen Pillay
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Transient Stability Assessment For Unbalanced Faults
Proceedings II of the 27st Conference STUDENT EEICT 2021, 2021The paper describes the model applicable for transient stability assessment for unbalancedfaults. The model itself is derived using symmetrical component representation of the grid. Sensitivityanalysis of zero sequence line reactance, fault location and line length was done using the builtmodel, the influence of unbalanced faults was discussed.
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Some effects of unbalanced faults
Electrical Engineering, 1931Line-to-ground voltage in three-phase grounded-neutral electric power systems under fault conditions often may be greater than the line-to-line voltage. This and numerous other important relations are shown by an investigation of the wide range of power-system voltages and currents existing under fault conditions.
R. D. Evans, S. H. Wright
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Using relays for unbalanced faults on generators
Electrical Engineering, 1953THE REVISION OF THE STANDARD describing “Short-Circuit Requirements” for synchronous rotating machines is of considerable interest to the relay engineer. The quantitative statement of current-time capability of the generator makes available a basis for coordination of system and machine relaying on unbalanced faults.
J. E. Barkle, Frank Von Roeschlaub
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Responses of Resistive Superconducting-Fault-Current-Limiters to Unbalanced Faults
IEEE Transactions on Appiled Superconductivity, 2005We analyzed the unsymmetrical fault characteristics of resistive superconducting-fault-current-limiters (SFCL) based on YBCO thin films with the unbalanced faults such as a single line-to-ground fault, a double line-to-ground fault, and a line-to-line fault in a three-phase system. The unsymmetrical rates of fault phases were 6.4, 9.2, 8.8 at the fault
H.-S. Choi +6 more
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Fault Diagnosis of Unbalanced Multirotor System
2020Rotating machines with center-hung dynamic balancing rotors are widely used in several industries. During operation, the rotor may gain or lose material due to the wear and deposition of foreign materials in the rotors. As a result of this, the rotor becomes unbalanced.
V. Hariharan +2 more
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Grid Fault Analysis of Unbalanced Loaded DFIG
Advanced Materials Research, 2012The electrical energy consumption is rising and there is a steady increase in the demand of power generation. To meet the demand fuel reserves are not sufficient. So, we can go to non-conventional energy sources like solar, tidal, wind and etc. In that wind generating system is rapidly growing one.
R. Bhanu Raghava Prakash +2 more
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Unbalanced Faults in Series Compensated Transmission Lines
IEEE Transactions on Power Apparatus and Systems, 1971This paper presents a technique using the Gauss-Seidel iterative approach for the analysis of power systems which contain series compensated lines. This approach includes the effect of system dissymmetries due to a single unbalanced fault and due to a single or -two phase series capacitor short circuit caused by the excessive fault currents.
M. Sachdev, R. Billinton
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A Fault Analysis Algorithm for Unbalanced Distribution Systems
IEEE Latin America Transactions, 2015This paper describes a new methodology for the fault analysis of a distribution electrical system, in which the phase imbalances, different types of loads, neutral cables, groundings and other inherent characteristics of distribution systems are taken into account.
Debora Rosana Ribeiro Penido +2 more
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