Mar 30, 2012 - The Alternative Transient Program (EMTP-ATP), which was. Huang, and W. Levy, Rule Book - Alternative Transients Program - Part I. Welcome to the ATP home page. ATP is the royalty-free version of EMTP (The Electromagnetic Transients Program). ATP and EMTP are probably the most widely-used Power System Transients simulation programs in the world today.
Welcome to EEUG, users group of ATP-EMTP This site has been established for the users of the royalty-free ATP version of the Electromagnetic Transients Program (EMTP). The ATP license is free for nearly everyone and requires only that you agree to the licensing terms. Licensing forms and information about ATP and EEUG are also available here.
Services provided by EEUG to the new members and/or ATP users having been licensed by EEUG are also accessible via this site. ATP is a universal program system for digital simulation of transient phenomena of electromagnetic as well as electromechanical nature. With this digital program, complex networks and control systems of arbitrary structure can be simulated. ATP has extensive modelling capabilities and additional important features besides the computation of transients.
It has been continuously developed through international contributions over the past 20 years. It seems you are in the public area. There are other additional areas, licensed and member. The visible content is adapted to your login accordingly.
To become licensed, please don't mind to request a licensed using How To - menu To become a member of EEUG please use the form choosing 'How to'. Become EEUG member. Save the date: EEUG conference, meeting and training are scheduled for September 17th until September 19t, 2018 in Arnhem, The Netherlands kindly hosted by DNV-GL, Konstantinos Velitsikakis 2017: EEUG mmeting, conference and course will take place September 4th until September 6t, 2017 in Kiel, Germany Watch out for detailed information soon. Forum: Forum is still under development and test. This should not affect you, but in case of any unintended message we kindly ask for your understanding.
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2016: 15th of September, 2016: EEUG meeting and conference 2016 in Birmingham, UK ended successfully. Thanks to organizers, sponsors, contributors, members of EEUG for this. Looking forward to meeting you next year in Kiel, Germany September 8th,2016 New CanAm and Jap/EastAsian License Forms online. In case of trouble inform us under This email address is being protected from spambots. You need JavaScript enabled to view it.
EEUG 'European EMTP-ATP Users Group' is the non-profit association for the users of one of the world wide mostly used program for the simulation of electromagnetic transients in electric power systems, to name only the main application. The association maintains mailing list for question and answers between all registered and licensed users, organizes conferences and trainings, to name the main benfits. Using the program requires to be licensed (see: How To - be licensed), includes no support like members get. Members of EEUG benefit from comfortable setup-programs, lower rates for materials and conference/training fees, access of course materials after period of time after the courses, and early access to new program features.
There are two mailing lists: The ATP mailing ATP-EMTP-L list is not open to public. Only licensed ATP users are entitled to subscribe to the list. Subscription is performed manually by authorized ATP-EMTP staff. The EEUG mailing list EEUG-L list is only open for members of EEUG, for the closer networking within EEUG For both mailing list users can post questions, discuss features and related topics and search the full history of posting by accessing the listserver archives. Additionally there is a forum on this web site for FAQ' and related categories.
The current changes the sign, that is, from plus to minus, or from minus to plus. EMTP adopts the fixed time step calculation, so then the switch current is not zero at the opened time. Due to this algorithm, apparent oscillation appears on the voltage at the terminal of inductance, as shown in Figure 1.10a, b.
![Alternative Transients Program Atp Rule Book Alternative Transients Program Atp Rule Book](/uploads/1/2/5/6/125614828/499375380.jpg)
Figure 1.10a shows the interruption of pure inductance current and voltage at node V1. At node V1 there is no branch to the ground and apparent voltage oscillation is obtained.
This oscillation appears at each time step. In an actual system there is no such condition; part of the branch exists as a stray capacitor. In Figure 1.11a, b a small capacitance, 10 μF, is connected at node V2, and the apparent oscillation disappears. This problem that causes current oscillation when pure capac- itance is closed by the switch can be solved by adding reactance in series. 1.2.3.7 ATPDraw ATPDraw is a graphical preprocessor for ATP‐EMTP 5, and it allows execution of ATP‐EMTP and PLOTXY. Figure 1.12 shows a simple outline and relating files for normal use. 30 20 10 V ol ta ge o r C ur re nt ( V, A ) 0 –10 –20 –30 0 4 8 12 16 20 Time (ms) Current VS1 voltage V1 voltage (b) VS1 (a) V1 0.18Ω 0.8 mH 22,100 µF 10 kV peak V V Figure 1.10 Reactor current interruption.
(b) Current and voltages. Fundamentals of EMTP 15 25 16 V ol ta ge o r C ur re nt ( V, A ) 7 –2 –11 –20 0 4 8 12 16 20 Time (ms) Current VS2 voltage V2 voltage VS2 V2 0.18Ω 0.8 mH 22,100 µF 10 µF10 kV peak V V (b) (a) Figure 1.11 Reactor current interruption with capacitor modification.
(b) Current and voltages. ATPDRAW ATPDRAW ATP–EMTP PLOTXY.acp file.atp file.lis file.pl4 file PL4 Viewer Word via clipboard Excel via.csv file V Figure 1.12 Outline of ATPDraw. 16 Power System Transient Analysis References 1 H. Dommel (1969) Digital computer solution of electromagnetic transients in single‐ and multiphase network, IEEE Transactions on Power Apparatus and Systems, PAS‐88, 4, 388–399. Meyer (1974) Computation of electromagnetic transients, Proceeding of the IEEE, 62 (7), 983–993.
Dommel (1986) Electromagnetic Transients Program Reference Manual (EMTP Theory Book), BPA. Scott Meyer, T.‐H. Liu (1992) Alternative Transients Program (ATP) Rule Book, Canadian/American EMTP User Group.
Hoidalen (2002) ATPDRAW Version 3.5 for Windows 9x/NT/2000/XP Users’ Manual, SINTEF. Power System Transient Analysis: Theory and Practice using Simulation Programs (ATP-EMTP), First Edition.
Eiichi Haginomori, Tadashi Koshiduka, Junichi Arai, and Hisatochi Ikeda. © 2016 John Wiley & Sons, Ltd. Published 2016 by John Wiley & Sons, Ltd. Companion website: www.wiley.com/go/haginomoriIkeda/power Modeling of System Components 2.1 Overhead Transmission Lines and Underground Cables 2.1.1 Overhead Transmission Line—Line Constants 2.1.1.1 General 2.1.1.1.1 Inductance of Single Conductor over the Earth When a single conductor is located over the Earth’s surface, the magnetic images are as shown in Figure 2.1 and self‐inductance is written as in Equation (2.1). Table 2.1 shows the self‐ inductances in the case of changing H e. The self‐inductance increases with H e. L H r e0 2 1 2 2 ln (2.1) 2.1.1.1.2 Capacitance of Single Conductor over the Earth A conductor with a radius r (m) is located at h (m) high over the Earth and has an electric charge +q (c) per unit length, as shown in Figure 2.2.
Generally, the permittivity of Earth, εe, is quite large compared with the permittivity of air, εa. The electric field lines from the conductor will flow into the Earth vertically. The voltage distribution of Earth’s surface will be flat. We can treat the Earth as a conductor.
The electric field in the air will be treated as shown in Figure 2.3. The voltage between two conductors is expressed by Equation (2.2). V q h r11 0 2 ln (2.2) 2 18 Power System Transient Analysis h H He He Conductor Magnetic images Earth’s surface Magnetic ground plane Figure 2.1 Depth of Earth return. Table 2.1 Inductance of single conductor over the Earth. H e (m) L (mH/km) 10 1.55 50 1.87 100 2.01 300 2.23 500 2.33 1000 2.47 hv1e +q Earth Figure 2.2 Electric field lines from the conductor. Modeling of System Components 19 So, the voltage between the conductor and the earth is expressed by Equation (2.3).
V v q h re1 11 02 2 2 ln (2.3) The capacitance between the conductor and the earth C 1e is expressed by Equation (2.4). C q v h r e e 1 1 02 2 ln (2.4) In case of the transposed line, the positive sequence capacitance is expressed by Equation (2.5). C D R 1 02 ln (2.5) That capacitance is decided by the equivalent distance D between phases and the equivalent radius of conductor R′. The height of the line does not affect the capacitance. The zero sequence capacitance is expressed by Equation (2.6). C h R D 0 0 3 2 2 8 ln (2.6) h h Neutral +q –q Imaginary conductor Figure 2.3 Electric field in the air. 20 Power System Transient Analysis The relation between positive and zero sequence capacitance is written in Equation (2.7).
C C Cm1 0 3 (2.7) Capacitance between phases is expressed by Equation (2.8) (Figure 2.4). C C Cm 1 3 1 0 (2.8) 2.1.1.1.2.1 Capacitance Matrix Here, we imagine three phases conductor over the Earth.
The voltages V 1, V 2, and V 3 are a function of the line charges q 1, q 2, and q 3, as shown in Equation (2.9). The p ls is Maxwell’s potential coefficient. V V V p p p p p p p p p q q 1 2 3 11 12 13 21 22 23 31 32 33 1 2 qq3 (2.9) In general cases, v p q, (2.10) where p h r p p D dii i i ik ki ik ik 1 2 2 1 20 0 ln / ln /.m F m F C0 Cm h1 D12 Figure 2.4 Capacitances between three‐phase conductors.
Modeling of System Components 21 The capacitance matrix is derived as an inverse matrix of Equation (2.10): q C v C p q q q k k k k k k k k 1 1 2 3 11 12 13 21 22 23 31 332 33 1 2 3k V V V (2.11) p p p p p p p p p k k k k k k 11 12 13 21 22 23 31 32 33 1 11 12 13 21 22 23 kk k k31 32 33. (2.12) The q 1, q 2, and q 3 are transformed as follows: q k V k V k V k k k V k V V k1 11 12 13 11 12 13 1 12 1 21 2 3 113 1 3 2 21 22 23 21 2 1 21 21 2 3 V V q k V k V k V k V V k k 22 23 2 23 2 3 3 31 32 33 311 2 3 k V k V V q k V k V k V k V33 1 32 3 2 31 32 33 3V k V V k k k V.
(2.13) The coefficient of V 1, V 2, and V 3 is the capacitance from the conductor to the ground, and they are written as C 11, C 12, and C 13. Another coefficient is mutual capacitance C ik (Figure 2.5): C k k k C C k C k k k C C k C 11 11 12 13 12 21 12 22 21 22 23 23 32 23 33 kk k k C C k31 32 33 31 13 31 (2.14) hi: height of conductor i Dik: distance between conductor i and image of conductor k dik: distance between conductor i and k ri: radius of conductor i hi i k dik Dik Imaginary conductor Figure 2.5 Explanation of mutual capacitance C ik. 22 Power System Transient Analysis In case of the transposed line (Figures 2.6 and 2.7), C C C C C C C C11 22 33. 5.