Results 181 to 190 of about 3,442 (220)

Simultaneous Solution of Control System Equations in EMTP

IEEE Transactions on Power Systems, 2006
The existing approach for solving control systems in the Electromagnetics Transients Program is to insert one-time-step delays for breaking feedback loops when one or more nonlinear functions is encountered. Although this approach may remain acceptable for several well-behaved cases, it provides a nonsimultaneous solution for a nonlinear system.
J. Mahseredjian, L. Dube, M. Zou, S. Dennetiere, G. Joos   +4 more
openaire   +1 more source

Modeling of a Chain Link Statcom in EMTP-RV

2006 Canadian Conference on Electrical and Computer Engineering, 2006
This paper describes an alternative circuit arrangement to form a static synchronous compensator (STATCOM), by connecting a number of gate turn off (GTO) thyristor converter 'chain links' in series per phase on the AC side of the system. Each GTO converter forms one 'link' of a 1-phase bridge voltage-sourced converter (VSC) and is referred to as a ...
N. M. Shah, Vijay Kumar Sood, V. Ramachandran   +2 more
openaire   +1 more source

Implementation of a new harmonic initialization method in the EMTP

IEEE Transactions on Power Delivery, 1995
Nonlinear branches, such as saturable reactors, can generate harmonics and consequently increase the EMTP time-domain simulation time before the actual distorted steady-state is reached. This is an important initialization problem for transient analysis studies performed in steady-state operating conditions.
X. Lombard, J. Mahseredjian, S. Lefebvre, C. Kieny   +3 more
openaire   +2 more sources

Testing ATP-EMTP in power system protection

PowerTech Budapest 99. Abstract Records. (Cat. No.99EX376), 2003
Testing ATP-EMTP in Power System ...
Havelka, Juraj, Marušić, Ante, Delimar, Marko   +2 more
openaire   +3 more sources

A generalized harmonic balance method for EMTP initialization

IEEE Transactions on Power Delivery, 1995
The harmonic balance method is extended to the steady-state analysis of power system models that include complex nonlinearities and variable topology power electronics equipment as may be user-assembled from basic EMTP-TACS components. In applying the harmonic balance method, these devices are considered as black boxes and isolated from the linear part
G. Murere, S. Lefebvre, X.D. Do
openaire   +1 more source

Running EMTP on PCs (power systems)

IEEE Computer Applications in Power, 1993
The Electromagnetic Transients Program (EMTP) is a computer program for the simulation of electric power system transient phenomena. The program provides a large set of device models permitting accurate modeling of power system components over a wide frequency range.
E. Gunther, T. Grebe, R. Adapa, D. Mader
openaire   +1 more source

Advanced semiconductor modeling using the EMTP

Proceedings of 1994 IEEE Workshop on Computers in Power Electronics, 2002
Advanced models of two semiconductor devices, the diode and IGBT, have been developed using a general purpose program, the Electromagnetic Transients Program (EMTP). These models are based on semiconductor physics and reproduce with high accuracy their behaviour during switching phenomena.
null Samihoeto, J.A. Martinez Velasco, G.A. Capolino   +2 more
openaire   +1 more source

EMTP Simulation of a Chain-Link STATCOM

IEEE Transactions on Power Delivery, 2008
A recent addition to the STATCOM family has been obtained by connecting a number of gate turn off (GTO) thyristor converters in series on the ac side of the system. Each GTO converter forms one ldquolinkrdquo of a one-phase, full-bridge voltage-source converter (VSC) and is referred to as a ldquochain link converterrdquo (CLC).
N.M. Shah, V.K. Sood, V. Ramachandran
openaire   +1 more source

Shunt reactor switching simulation by EMTP

Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521), 2004
The work reported in this paper is EMTP simulation of reactor switching. The simulation has identified the causes of high transient overvoltage, which are produced when switching high voltage shunt reactors.
B. Vahidi, A. Ghatrehsamani, S.A. Kashi
openaire   +1 more source

Elimination of undemonstrable phenomena in the EMTP

POWERCON '98. 1998 International Conference on Power System Technology. Proceedings (Cat. No.98EX151), 2002
This paper discusses the undemonstrable phenomena that can occur when the EMTP is used for simulation of some types of networks, consisting of power electronics, and/or voltage-, current controlled elements. The synchronous response procedure (SRP) is suggested for elimination of these phenomena.
openaire   +1 more source