Results 141 to 150 of about 1,055 (161)

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

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

Emtp simulation of synchronous machine from standstill to synchronization

2009 IEEE Power & Energy Society General Meeting, 2009
This paper presents the modeling and simulation studies for the startup of a 250 MVA pumped storage unit in pumping mode and the startup of a 65 MVA hydraulic unit as a corrective action following an uncontrolled islanding of an area due to an extreme contingency.
Karaağaç, Ulaş, Mahseredjian, Jean, Dennetière, Sébastien   +2 more
openaire   +2 more sources

การศึกษาเปรียบเทียบแบบจำลองการเกิดวาบไฟและการใช้งานในโปรแกรม EMTP

วิทยานิพนธ์ฉบับนี้นำเสนอผลการศึกษาการใช้อินทิเกรชันโมเดลและลีดเดอร์โมเดลในโปรแกรม EMTP เพื่อจำลองการเกิดเบรกดาวน์ของแกปอากาศเนื่องจากแรงดันอิมพัลส์ฟ้าผ่าระหว่างอิเล็กโตรดทั้งแบบ rod-rod และ rod-plane ที่มีระยะแกปในช่วง 10-28.5 ซม. และนำไปประยุกต์ใช้สำหรับจำลองการเกิดวาบไฟตามผิวของลูกถ้วยแท่งก้านตรงชนิด 56/57-2 และ 56/57-3 โดยเปรียบเทียบเส้นโค้งแรงด ...
openaire   +1 more source

Suppression of Numerical Oscillations in the EMTP

IEEE Power Engineering Review, 1989
When compared to other possible integration schemes for the EMTP, the trapezoidal rule of integration presents very good overall characteristics in terms of accuracy, efficiency, and run-off stability. During certain system conditions, however, the solution with trapezoidal may present sustained numerical oscillations (Fig. 1(a)).
Jose R. Marti, Jiming Lin
openaire   +1 more source

Microturbine harmonic impact study using ATP-EMTP

2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951), 2005
ATP-EMTP simulations of a 3-phase commercial power distribution system containing 250 kW, 480 V microturbines running at less than full load and producing harmonic currents that violate recommended current distortion limits are described. The purpose of the simulations was to investigate the extent to which the nonlinear currents generated by the ...
P. Kirawanich, R.M. O'Connell, G. Brownfield   +2 more
openaire   +1 more source

EMTP simulation ofa STATCOM using hysteresis control

APSCOM 2000 - 5th International Conference on Advances in Power System Control, Operation and Management, 2000
One of the main disadvantages of the traditional STATCOM is that it generates a considerable amount of harmonics. This paper presents an alternative control strategy of a STATCOM based on hysteresis current control. Simulation results show that the supply current waveform can be controlled to be nearly sinusoidal in form regardless of whether the ...
openaire   +1 more source

Simulation of electromagnetic transients with EMTP-RV

2015
This chapter presented a summary on numerical methods used in EMTP (EMTPRV version) for the computation of electromagnetic transients. EMTP offers several options and modules for the simulation and analysis of complex power systems. EMTP offers a unified environment that can be applied to study power systems from steady-state conditions, to ...
J. Mahseredjian, Ulas Karaagac, Sebastien Dennetiere, Hani Saad   +3 more
openaire   +2 more sources

Static synchronous series compensator model in EMTP

IEEE CCECE2002. Canadian Conference on Electrical and Computer Engineering. Conference Proceedings (Cat. No.02CH37373), 2003
A voltage source converter (VSC) can be used as a sinusoidal voltage source with controllable amplitude and angle. When placed in series with a transmission line, this source can control the flow of active and/or reactive power in the line thereby operating as a series compensator Note that in the mode of active power controller a separate DC source of
openaire   +1 more source

Simulation of PV System Using EMTP-ATPDraw

2019 16th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2019
This paper presents the modelling and simulation of the Photovoltaic (PV) system using Electro-Magnetic Transient Program, EMTP-ATPDraw. The PV generator model including PV characteristic curves, filter and inverter models are also presented. The currents from PV behind the inverter with different loads are also compared.
openaire   +1 more source