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Wyszukujesz frazę "Power grid" wg kryterium: Temat


Tytuł:
Utilization of graph theory in security analysis of power grid
Autorzy:
Válek, Dalibor
Powiązania:
https://bibliotekanauki.pl/articles/526987.pdf
Data publikacji:
2014
Wydawca:
Collegium Civitas
Tematy:
Security
matrix
power grid
graph
Opis:
This paper describes way how to use graph theory in security analysis. As an environment is used network of power lines and devices which are included here. Power grid is considered as a system of nodes which make together graph (network). On the simple example is applied Fiedler´s theory which is able to select the most important power lines of whole network. Components related to these lines are logicly ordered and considered by author´s modified analysis. This method has been improved and optimalized for risks related with illegal acts. Each power grid component has been connected with possible kind of attack and every of this device was gradually evaluated by five coefficients which takes values from 1 to 10. On the coefficient basis was assessed the level of risk. In the last phase the most risky power grid components have been selected. On the selected devices have been proposed security measures.
Źródło:
Securitologia; 2014, 2(20); 87-99
1898-4509
Pojawia się w:
Securitologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sieci elektroenergetyczne przyszłości oparte na technologii Smart Grid
Future electricity networks based on the technology of Smart Grid
Autorzy:
Zajkowski, K.
Borowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/310000.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
sieć elektroenergetyczna
elektroenergetyka
Smart Grid
power grid
electric power
Opis:
W artykule przybliżono założenia technologii Smart Grid w sieci elektroenergetycznej. Wyjaśniono, czym charakteryzuje się inteligentna sieć, jakie są jej główne aspekty oraz korzyści. Przedstawiono koncepcję współpracy sieci energetycznej z pojazdami elektrycznymi przyszłości.
The article presents the assumptions of Smart Grid technology in the power grid. It explained here, which is characterized by the intelligent network, what are the main aspects and benefits. Cooperation electricity network with electric vehicles has been presented.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 8; 333-336
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proposal of a regional grid cluster model for analysis of electrical power network performance
Autorzy:
Li, Yang
Janik, Przemysław
Schwartz, Harald
Pfeiffer, Klaus
Powiązania:
https://bibliotekanauki.pl/articles/2135739.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
decentralized generation
grid cluster
power balance
regional power grid
Opis:
This paper provides a method for simplified description of a regional power grid model aimed to deliver a grid reduction, and improve grid performance observability. The derived power grid model can be used to analyze the regional allocation of the decentralized energy generation and consumption. The expansion of wind and solar generation in the power system affects the residual load. The power balance between electricity consumption and generation was calculated and analyzed based on the temporal and spatial scales. The proposed grid clustering method is a useful approach for performance analysis in systems with a growing share of renewable generation.
Źródło:
Archives of Electrical Engineering; 2022, 71, 3; 601--613
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dlaczego sieci elektroenergetyczne powinny być inteligentne
Why power grid should be smart
Autorzy:
Wiszniewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/410553.pdf
Data publikacji:
2011
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
elektroenergetyczne sieci inteligentne
smart power grid
Opis:
Wzrost zainteresowania sieciami inteligentnymi, a w szczególności ich spodziewanym potencjałem operacyjnym wymaga podania rzeczowych argumentów za rozwojem tej idei. W artykule przedstawiono większość powodów, dla których należy wspierać rozwój sieci typu smart.
Interest in Smart Grid, particularly in its expected operational potential, requires the exposure of matter-of-fact argumentation for development of this approach to power system control. In this paper fundamental reasons justifying support of Smart Grid technology development have been presented.
Źródło:
Present Problems of Power System Control; 2011, 1; 125-129
2084-2201
Pojawia się w:
Present Problems of Power System Control
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Substation reliability evaluation in the context of the stability prediction of power grids
Autorzy:
Borecki, M.
Ciuba, M.
Kharchenko, Y.
Khanas, Y.
Powiązania:
https://bibliotekanauki.pl/articles/199826.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
reliability
power grid
risk analysis
substation
Opis:
The aim of the presented work was to examine the reliability assessment model on the example of a selected power grid object. The analyzed object was tested based on assumptions about technological breaks that were caused by overvoltage, among others. The study was conducted to check the reliability of integral elements of the power grid object and to assess the change in reliability level as a function of the frequency of inspections. The test results are to determine the optimal frequency of inspections of individual power grid objects in order to increase its reliability. In addition, the possibility of correlating optimal inspection periods resulting from the findings of this paper with periodic inspections of power network facilities was assessed.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 4; 769-776
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Downtime Measurements of Generator-Powered Microgrid During Planned and Unplanned Transfer to Island Mode
Autorzy:
Prokop, Kamil
Bień, Andrzej
Barczentewicz, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/27311940.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
islanding
Smart grid
power grid communication
power quality
distributed computing
Opis:
Growing popularity of distributed generation is drawing special attention to communication technologies in smart power grids. This paper provides a detailed overview of the communication protocols utilized in the modern distributed grid laboratory. It describes both wired and wireless technologies used in Smart Grid and presents the remote operation of switching the subsystem from grid mode to island mode operating under nominal conditions. It shows the duration of power outages during a transfer to island mode with diesel generator running on idle - which simulates planned islanding and diesel generator stationary, which simulates unplanned islanding. Latency between registration of disturbance and executing control command is measured. The results obtained are compared with current legislation. The consequences to the power system that are possible in both scenarios are highlighted. Obtained results and description of the communication technologies can be useful for the design of distributed power grids, island-mode power grids, and Smart Grids, as well as for further research in the area of using combustion fuel generators as a primary power supply in the microgrid.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 3; 493--498
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computationally efficient method of simulation of an electric drive impact on the power grid
Autorzy:
Beniak, R.
Gardecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/141226.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric drive
converter system model
power grid
Opis:
This paper presents a computationally efficient method for modelling an impact of the converter drive on the power grid. The formalized variable structure method (FVSM) allows for comprehensive studies of the effect on the power grid and examining the relation between this effect and the number of drive and feeding line parameters. In order to obtain a comprehensive model along with the model of the power grid, the parameters that are applied originate from a drive of a coal-fired power station. These parameters have been determined based on assessment and estimation. The estimation process was conducted with the aid of a model that allows for the commutation of power electronic elements. The authors confirmed that the model was correct by comparing empirical and theoretical voltage and current waveforms. Harmonic content of the voltage and current in the power grid which feeds the drive are considered to be the measure of the converter drive impact on the power grid. The standard method for the reduction of a harmonic content in the voltage and current involves the application of line reactors and distribution or converter transformers. As an example, the authors determine the impact of the drive on the power grid with respect to the adopted parameters of the line reactor. This example presents FVSM abilities with regard to simulation of complex systems that contain power grid components and converter drives.
Źródło:
Archives of Electrical Engineering; 2013, 62, 1; 77-90
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalne sterowanie falownika przy jego pracy na sieć systemu energetycznego
Optimal inverter controling during its operation for power grid
Autorzy:
Mazur, D.
Powiązania:
https://bibliotekanauki.pl/articles/1369606.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
optymalne sterowanie
system energetyczny
optimal inverter
power grid
Opis:
The inverter circuit is supposed to operate for grid with low internal impedance (for fixed grid). The goal of the presented circuit is to provide the given current of the main harmonic to the grid. The grid can contain higher harmonics of the voltage, which due to the low impedance of the grid lines spreads to the voltage of the inverter output. Therefore we need to calculate the first (main) harmonic of this voltage and find such inverter controlling, that the main harmonic of the current flowing to the grid from the considered circuit would be in the given angle position to it and at the given value. The second important goal of the circuit is, as far as possible, to eliminate the voltage higher harmonics at the circuit output getting there from the grid. Obviously eliminating the ripples from voltage higher harmonics of the receiver is limited by the capabilities of the examined inverter circuit.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2012, 2, 95; 25-30
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of the variability of daily electric power loads
Analiza porównawcza zmienności dobowych obciążeń elektroenergetycznych
Autorzy:
Necka, K.
Trojanowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/792584.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
voltage power grid
distribution network
electrical power load
comparative analysis
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Security policy for low-voltage smart grids
Autorzy:
Czechowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/410616.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
smart power grid
digital security
smart metering
security policy
Opis:
Smart Grid is both a concept and a way to mitigate infrastructural deficiencies and counteract the effects of the growing demand for electrical energy. One of the ways ensuring an increase in power grid’s management efficiency is utilization of the latest communication solutions by use of IT technologies. Such solutions ensure reduced energy consumption and evened 24-hour loads, decreased losses and – thanks to automated energy balancing – increased transfer security. Such solutions will directly translate into increased efficiency of the entire power grid. The present article contains an introduction to smart power grids, perspectives for their development in Poland, as well as an extended discussion of related issues concerning security on the organizational level.
Źródło:
Present Problems of Power System Control; 2014, 5; 55-72
2084-2201
Pojawia się w:
Present Problems of Power System Control
Dostawca treści:
Biblioteka Nauki
Artykuł

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