Zobrazeno 1 - 10
of 38
pro vyhledávání: '"C.W. Fromen"'
Autor:
M. Glinkowski, L. Kojovic, C.W. Fromen, R. Kuffel, J. Nordstrom, B. Kotheimer, I. Hasenwinkle, J. Esztergalyos, Mladen Kezunovic, D.A. Tziouvaras, P.G. McLaren, S. Zocholl, D. Dawson, G. Alexander
Publikováno v:
IEEE Transactions on Power Delivery. 15:62-72
This paper reviews a number of mathematical models used to represent the nonlinear behavior of the magnetic core of instrument transformers. Models of instrument transformers using these core representations are presented. The transient response of t
Autor:
P. Waudby, P. Kerrigan, D.W. Smaha, M. Yalla, S. Easterday-McPadden, W. G. Hartmann, J. Hurley, S. Patel, M. Bajpai, K. Kozminski, G. Nail, J. Gardell, E. Fennell, A.C. Pierce, G. Pence, K. Khunkhun, W.A. Elmore, C.J. Mozina, C.W. Fromen, S. Usman
Publikováno v:
IEEE Transactions on Power Delivery. 14:132-141
The practice of tripping the generator breakers immediately following a boiler/turbine trip exposes a steam turbine generator to a potentially damaging overspeed operating condition. This paper describes the use of the sequential trip mode as a means
Publikováno v:
IEEE Transactions on Power Delivery. 11:149-157
This paper describes a test method for distance relays using an advanced open-loop digital simulator. Derivation of test signals during prefault and fault, and test procedure are introduced. It is demonstrated that the method of generating test signa
Autor:
A.A. Burzese, W. J. Marsh, J.F. Daume, B.J. Feldman, F.A. Rankin, Miriam P. Sanders, D.W. Hawver, B.K. Warwick, E.C. Fennell, J.A. Jodice, P.B. Winston, J.W. Ingleson, J.L. McElray, E.A. Baumgartner, J.D. Huddleston, C.W. Fromen, D.R. Hemming, R.P. Taylor, P.J. Lerley
Publikováno v:
IEEE Transactions on Power Delivery. 9:1339-1351
The results of a survey of North American Relay Engineers concerning their practices for testing protective and other relays and their personnel requirements are presented. Relay tolerances, training requirements, relay test schedules, relay test int
Publikováno v:
IEEE Computer Applications in Power. 7:15-19
Houston Lighting & Power funded Texas AM direct interface to the existing digital fault recorder (DFR) system; graphical user interface (GUI) for viewing of results; database management for storing results; and a modem interface to the protection eng
Publikováno v:
IEEE Transactions on Power Delivery. 9:405-413
This paper describes an EPRI study of current transformer (CT) digital models intended for protective relay transient performance analysis. Experimental evaluation of CT models implemented using the Electromagnetic Transient Program (EMTP) was carrie
Publikováno v:
IEEE Transactions on Power Delivery. 9:1907-1915
This paper presents the results of an EPRI study on development of a new method for coupling capacitor voltage transformer (CCVT) frequency response measurements from the secondary side. The method is especially suitable for field measurements since
Publikováno v:
IEEE Transactions on Power Delivery. 8:1942-1949
Digital fault recorders (DFRs) are used in substations to capture recordings of various disturbances and fault events. Protection engineers use these recordings to identify reasons for particular operation of protection relays and circuit breakers. I
Publikováno v:
IEEE Transactions on Power Delivery. 7:1097-1103
For pt.I see ibid., vol.6, no.4, p.1427 (1991). Evaluation steps undertaken in the analysis of the DYNA-TEST simulator performance are described. The evaluation assumes comparison of the simulator output waveforms obtained using simulated data with t
Publikováno v:
IEEE Transactions on Power Delivery. 6:1423-1429
The authors describe a new digital dynamic testing (DYNA-TEST) simulator developed for protection relay applications. This simulator is capable of producing voltage and current transients that correspond to actual fault events in the power systems. F