Results 251 to 260 of about 133,467 (304)
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Transient overvoltages on power systems
IEE Proceedings C Generation, Transmission and Distribution, 1986Power systems are subjected to many forms of transient phenomena brought about essentially by sudden changes in the steady state values of voltages or currents. Such changes may be the result of a lightning stroke, some malfunction of the system or be brought about by the switching of a circuit either to clear a fault or as a normal operational ...
J.P. Bickford, A.G. Heaton
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Transient response and transient stability of power systems
Proceedings of the Institution of Electrical Engineers, 1968The paper presents a case for correlating transient response with transient-stability limit of power systems. An elementary power system provided with fast acting voltage regulators using various feedback signals is analysed in detail. The effect of varying regulator gains on transient response is investigated with the help of gain-locus diagrams on a ...
S.L. Surana, M.V. Hariharan
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A Probabilistic Approach to Classification of Transients in Power Systems
2006 Canadian Conference on Electrical and Computer Engineering, 2006This paper presents an in-depth study of classification of transients in power systems using two pattern classification methods, namely the maximum-likelihood, and the probabilistic neural networks. These methods, which stem from the Bayes rule, aim at estimating the underlying probability density functions that are required by the Bayes rule, but are ...
L. S. Safavian +2 more
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Computation of power system transients: Modeling portability
2009 IEEE Power & Energy Society General Meeting, 2009This panel paper presents research activities related to modeling portability between electromagnetic transients simulation programs. Although modern computer programs are provided with sophisticated graphical user interfaces, each program has its own modeling interface and model development methods.
J. Mahseredjian, O. Saad, S. Dennetiere
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On a new approach for the simulation of transients in power systems
Electric Power Systems Research, 2007This paper presents a new simulation tool named EMTP-RV. EMTP-RV is a completely new program with a new graphical user interface and a new computational engine. The simulation uses a new matrix formulation for computing load-flow, steady state and time-domain solutions.
J. Mahseredjian +4 more
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Power-Electronics-Enabled Transient Stabilization of Power Systems
2013Transient stability of electric energy grids is defined as the ability of the power system to remain in synchronism during large disturbances. If the grid is not equipped with controllers capable of transiently stabilizing system dynamics, large disturbances could cause protection to trigger disconnecting the equipment and leading further to cascading ...
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Power-system transients caused by switching and faults
Electrical Engineering, 1939This paper summarizes the results of an investigation of transient voltages on power systems caused by switching and faults. The transient voltages on power systems as measured by the “klydonograph” are reviewed and compared with the flash-over values of transmission-line insulation. It is shown that the higher values of transient voltages are produced
R. D. Evans +2 more
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Distributed Power Control for Transient Stability of Multimachine Power Systems
IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2017Transient stability is a key problem in power systems. Conventional methods enhancing the transient stability are always based on local information with a prior knowledge of an equilibrium point that may not be available for large disturbances. This paper puts forward a distributed power controller for improving transient stability of multimachine ...
Ji Xiang +2 more
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Multimachine System Transient Stability Improvement using Transient Power System Stabilizers (TPSS)
IEEE Transactions on Energy Conversion, 1986Power system stabilizers (PSS) have been designed and installed [1,2] to improve the dynamic (smnall signal) response of multimachine systems. This paper presents the theory and test results for improving the transient (large disturbance) behaviour of a multimachine system by supplementing the conventional PSS with a transient power system stabilizer ...
M. K. Musaazi +2 more
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Practical calculation of electrical transients on power systems
Electrical Engineering, 1943Solution of many power-circuit problems depends upon the magnitude, duration, and frequency of occurrence of transient voltages and currents produced by circuit changes. Circuit-opening or recovery-voltage transients are fundamental in the operation of interrupting devices and may be important from the standpoint of the dielectric strength of circuit ...
R. D. Evans, R. L. Witzke
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