Temat: PSCad - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Simulations of Fast Transients in typical 25 kV a.c. railway power supply system
Symulacje stanów nieustalonych w typowym 25 kV a.c.układzie zasilania trakcji
Autorzy:: Chmielewski, T.
Dziadkowiec, A.
Powiązania:: https://bibliotekanauki.pl/articles/266311.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:: railway
lightning
PSCAD
trakcja
przepięcia piorunowe
Opis:: Railway power lines as any other outdoor overhead conductors are exposed to lightning strokes. Overvoltages generated by a lightning surge may severely decrease the overall system reliability due to possible damages of powering and signalling equipment. Hence an appropriate design of lightning protection is crucial. This paper presents computer simulations of lightning phenomenon (Fast Transients) in a typical railway catenary system conducted in PSCAD software. Detailed numerical model consisted of cables, overhead catenary lines, surge arresters, transformers and rails. A few modelling approaches were used and compared. The outcome of such analysis can be helpful in determining possible overvoltages in railway system along with a proposal of ratings and locations of additional surge arresters’ installation.
Treść artykułu skupia się na symulacyjnych badaniach przepięć piorunowych w sieci zasilania trakcji elektrycznej. W oparciu o model typowego systemu 25 kV a.c., przeprowadzono porównanie odpowiedzi układu w przypadku zmiany podejścia do modelowania elementów takich jak napowietrzna sieć trakcyjna, czy też szyny.
Źródło:: Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2013, 36; 43-46
1425-5766
2353-1290
Pojawia się w:: Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Using the EMTP/ATP program for calculation of electric and magnetic field distribution under overhead line
Autorzy:: Wiśniewski, J.
Anderson, E.
Karolak, J.
Powiązania:: https://bibliotekanauki.pl/articles/97319.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: EMTP-ATP program
PSCad
MATLAB Simulink
magnetic field
Opis:: This paper presents the method of calculation of the electric and magnetic fields under overhead transmission line with any number of circuits, phase positions, voltages and current loads. Calculations of this type usually require specialized and costly programs. The program EMTP/ATP is a royalty free tool to calculate the electric transient and steady states in complex power systems. You can use this program and through appropriate modeling the multi-phase wire system representing the line and measurement device calculate the strength of the electric and magnetic fields. The results of calculations are characterized by a very small error compared to the results obtained by using the specialized commercial program. This method can be used with other popular engineering tools like Matlab/Simulink or PSCad.
Źródło:: Computer Applications in Electrical Engineering; 2012, 10; 98-106
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Investigation on ferroresonance due to power transformer energization in high voltage 400 kV transmission grid
Autorzy:: Polewaczyk, Mateusz
Robak, Sylwester
Szewczyk, Marcin
Powiązania:: https://bibliotekanauki.pl/articles/141509.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ferroresonance
high voltage
Poincaré map
power system transients
PSCAD
Opis:: This paper presents a study on ferroresonance occurring in a high voltage 400 kV transmission grid due to energization of power transformer under no-load conditions. The system scenarios analyzed in the present paper are considered as critical for development and modernization plans as currently announced by the national grid operator in Poland. The PSCAD simulation model was developed and applied for several study cases of a system with double-circuit arrangement of a transmission line. It is shown that the ferroresonant oscillations can be initiated by two-phase switching operation of a line circuit breaker. The impact of the double-circuit length on the ferroresonance mode and severity is demonstrated with the use of the Poincaré map analysis and Short Time Fourier Transform. It is demonstrated that the length of the transmission line that is mutually coupled in the double-circuit arrangement has a significant impact on the ferroresonance occurrence and on its mode. As the ferroresonance can pose severe threat to the power system components due to the severe overvoltage and overcurrent oscillations, the analysis presented in this paper demonstrates the necessity of the ferroresonance analyses for any re-designed transmission system.
Źródło:: Archives of Electrical Engineering; 2019, 68, 4; 771-786
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Stochastic estimation of voltage sag due to faults in the power system by using PSCAD/EMTDC software as a tool for simulation
Autorzy:: Patne, N. R.
Thakre, K. L.
Powiązania:: https://bibliotekanauki.pl/articles/262574.pdf
Data publikacji:: 2007
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:: voltage sag
PSCAD/EMTDC
stochastic method
uniform fault distribution
Opis:: Faults in the power system are major cause of voltage sag. Voltage sag in the power system due to fault can be symmetrical or unsymmetrical. For sensitive loads it is necessary to estimate how many times in year the voltage at their terminal will experience sag to avoid tripping of operation. Several stochastic methods for estimation of number of sags are developed in recent years. In different methods of sag prediction there is need to do lengthy programming or calculations. Here PSCAD/EMTDC software package is used to estimate number of sag with uniform distribution of faults along the lines.
Źródło:: Electrical Power Quality and Utilisation. Journal; 2007, 13, 2; 59-63
1896-4672
Pojawia się w:: Electrical Power Quality and Utilisation. Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Study of the impact of 220 kV SISFCL on the distance protection for transmission line
Autorzy:: Luo, Y.
Shi, T.
Huang, L.
Powiązania:: https://bibliotekanauki.pl/articles/141728.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: SISFCL
distance protection
EMTDC/PSCAD
220 kV transmission line
setting method
Opis:: As the most typical application of superconducting technology, the Saturated Iron core Superconducting Fault Current Limiter (SISFCL) is a kind of ideal high voltage limiter, which can achieve noticeable limiting endless stream and has wide application prospect. However, the selectivity and sensitivity of the distance protection (DP) in the high voltage transmission network would be affected by the impedance characteristics of SISFCL. For these problems, firstly the structure and the working principle of the SISFCL are introduced briefly. Secondly, the impact mechanisms of 220 kV SISFCL on the original distance protection for the transmission line (TL) are analyzed. Then two methods of eliminating influences are deduced from the previous analysis and an improved setting method based on SISFCL for distance protection is proposed. Finally, we used EMTDC/PSCAD software to build the 220 kV SISFCL and distance protection model in the transmission network. The simulation results demonstrate that the proposed setting strategy can effectively improve the selectivity and sensitivity of distance protection and provide a reference for the practical applications of SISFCL applied to the transmission line.
Źródło:: Archives of Electrical Engineering; 2018, 67, 1; 151-163
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Distributed collaborative optimization DC voltage control strategy for VSC–MTDC system with renewable energy integration
Autorzy:: Li, Jingye
Dong, Haiyimg
Powiązania:: https://bibliotekanauki.pl/articles/2086694.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: DC voltage control
distributed model prediction
droop control
VSC–MTDC
PSCAD/EMTDC
Opis:: Aiming at the problem of DC voltage control deviation and instability caused by a large-scale renewable energy access VSC–MTDC system, this paper combines voltage margin control and droop control. A strategy for controlling collaborative optimization in a sparsely distributed communication network has been proposed. Firstly, the distributed modeling of the system is carried out by combining MAS technology with small signal modeling. Then, a distributed model predictive controller is designed for a single droop control converter station. On this basis, a distributed cooperative optimization control strategy is proposed. According to the DC voltage deviation, the system adopts different control methods to control the receiving converter station. Finally, based on PSCAD/EMTDC and MATLAB co-simulation platforms, a six-terminal flexible HVDC system is built to verify the effectiveness of the control strategy under different conditions such as input power fluctuation, any converter station out of operation and system communication failure.
Źródło:: Archives of Electrical Engineering; 2022, 71, 2; 325--342
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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