Transient program

First, this book will illustrate a transient on a single-phase line from a physical viewpoint, and how it can be solved analytically by an electric circuit theory. The impedance and admittance formulas of an overhead line will also be described. Approximate formulas that can be computed using a pocket calculator will be explained to show that a transient can be analytically evaluated via hand calculation. Since a real power line contains three phases, a theory to deal with a multiphase line will be developed. Finally, the book describes how to tackle a real transient in a power system. A computer simulation tool is necessary for this— specifically the well-known simulation tool Electro Magnetic Transients Program (EMTP), originally developed by the U.S. Department of Energy, Bonneville Power Administration— which is briefly explained in Chapter 1. 

Akihiro Ametani earned his PhD from the University of Manchester (UMIST), Manchester, UK, in 1973. He was with the UMIST from 1971 to 1974, and with Bonneville Power Administration for summers from 1976 to 1981, and developed the EMTP (Electro-Magnetic Transients Program). Since 1985, he has been a professor at Doshisha University, Kyoto, Japan. In 1988, he was a visiting professor at the Catholic University of Leuven, Belgium. From April 1996 to March 1998, he was the director of the Science and Engineering Institute, Doshisha University, and dean of the Library and Computer/Information Center from April 1998 to March 2001. He was chairperson of the Doshisha Council until March 2014. 

AIS Air-insulated substation ATP Alternative transients program CB Circuit breaker CM Common mode CT Current transformer DM Differential mode DS Disconnector EHV Extra-high voltage (330-750 kV)... 

Finally, the ElectroMagnetic Transients Program (EMTP), which is widely used all over the world, is briefly explained. 

Schnyder-Bergeron method by Frey and Althammer 1964 Dommel s PhD thesis in Tech. Univ. Munich 1966 Dommel started EMTP development in BPA 1968 Transients Program (TP = EMTP Mode 0), 4000 statements 1973 Dommel moved to Univ. British Columbia Scott-Meyer succeeded EMTP development... 

Universal Transients Program File (UTPF) and Editor/Translator Program (E/T) completed by Scott-Meyer. UTPF and E/T made by EMTP could be used in any computers because those solved machine-dependent problems and prepared a platform for any researchers able to join EMTP development, not necessary to visit BPA Japanese EMTP Committee founded 1976 Semiyen, Ametani, Brandwajn, and Dube joined the team 1982 Marti joined EMTP development 1978 First EMTP workshop during IEEE PES meeting... 

Nagaoka, N. and A. Ametani. 1988. A development of a generalized frequency-domain transient program—FTP. IEEE Trans. Power Deliv. 3(4) 1986-2004. 

Brandwajn, V. and H. W. Dommel. 1977. Anew method for interfacing -generator models with an electromagnetic transients program. IEEE PES PICA Conf. Rec. 10 260-265. 

Based on the measured results, modeling of electrical elements related to these paths is developed for an LS simulation, and electromagnetic transients program (EMTP) simulations are demonstrated in the model. The simulation results are compared with the measured results, and the accuracy of the modeling method is discussed. 

Hembach, M. and L. D. Grcev. 1997. Grounding system analysis in transients programs applying electromagnetic field approach. IEEE Trans. Power Del. 12 186-193. 

In the quarter-scale dynamic series of tests these general trends were repeated, with some modifications in the over-all temperature distribution patterns, as indicated in Fig. 7. For the transient programed acceleration runs, sharp temperature gradients occurred near the top of the pool and, simultaneously, a significant temperature rise occurred throughout e depth of the liquid. For constant high-acceleration runs, little change in curve shape from the static case was noted. 

Assuming the tunnel as a pipe conductor, the propagation parameters are evaluated by using a pipe-type (FT) cable option of the electromagnetic transients program (EMTP) CABLE CONSTANTS. 

Then, modeling of power-electronics circuit elements is described and the thermal calculations by electromagnetic transients program (EMTP) are explained. 

Chapter 1 also presents the well-known simulation tool electromagnetic transients program (EMTP), originally developed by the US Department of Energy, Bonneville Power Administration, which is useful in dealing with a real transient in a power system. 

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