Temat: Reactive Power compensation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study on electric spring control method considering noncritical load voltage constraint
Autorzy:: Chen, Y.
Ma, G.
Xu, U.
Zhang, H.
Ju, R.
Powiązania:: https://bibliotekanauki.pl/articles/140516.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electric spring
noncritical load
voltage excursion
reactive power compensation
Opis:: With the increasing penetration rate of grid-connected renewable energy generation, the problem of grid voltage excursion becomes an important issue that needs to be solved urgently. As a new type of voltage regulation control method, electric spring (ES) can alleviate the fluctuations of renewable energy output effectively. In this paper, the background and basic principle of the electric spring are introduced firstly. Then, considering the influence of an electric spring on noncritical load voltage, noncritical loads are classified reasonably, and based on the electric spring phasor diagram, the control method to meet the noncritical load voltage constraint is proposed. This control method can meet the requirements of voltage excursions of different kinds of noncritical load, increase the connection capacity of the noncritical load and improve the voltage stabilization capacity of the electric spring. Finally, through the simulation case, the feasibility and validity of electric spring theory and the proposed control method are verified.
Źródło:: Archives of Electrical Engineering; 2018, 67, 4; 709-724
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Impact of Dimming LED Street Luminaires on Power Quality
Autorzy:: Lerch, Tomasz
Rad, Michał
Wojnicki, Igor
Powiązania:: https://bibliotekanauki.pl/articles/1844633.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: capacitive reactive power
currents characteristics
LED luminaires power quality
LED street lighting
reactive power compensation
voltage characteristics
Opis:: More and more street lighting deployments use LED technology as a light source. Unfortunately, the new technology also brings some challenges with it that remain unnoticed until installed at scale. This article presents issues related to capacitive reactive power consumed by LED luminaires. The problem is even more profound if the luminaire is dimmed, because it consumes capacitive reactive power, which is very undesirable in the power system. Countermeasures in terms of reactive power compensation for a luminaire working with variable power and their effects are also presented. The article also contains the results of the harmonic analysis of the LED luminaires current for full power and dimmed operation.
Źródło:: International Journal of Electronics and Telecommunications; 2021, 67, 2; 255-260
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Current limiting algorithm for three-phase grid-connected inverters
Autorzy:: Tran, Tho Quang
Powiązania:: https://bibliotekanauki.pl/articles/2135740.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: current limitation
negative sequences
reactive power compensation
three-phase grid-connected inverter
unbalanced voltages
Opis:: Grid-connected inverters are commonly used in systems of renewable energy to convert this energy source into AC power with parameters suitable for connection to the grid. In the normal operating conditions, the grid-connected inverters mainly generate active power to the grid. However, when a voltage sag or voltage imbalance occurs, the grid voltage imbalance in the conventional control methods causes negative sequence components and increases the output current magnitude of inverters. The increase of current can damage power semiconductor devices. This paper presents a strategy to limit the current magnitude of inverters under unbalanced grid voltage conditions. In this strategy, a multiple-complex-coefficient filter is used to eliminate the negative sequence voltage components. This method does not require any additional hardware. A three-phase gridconnected photovoltaic inverter system using a solar array of 20 kWp is also used for the survey. The effectiveness has been validated when comparing the simulation results on Matlab/Simulink of the proposed method with those of the conventional method.
Źródło:: Archives of Electrical Engineering; 2022, 71, 3; 559--579
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Communication issues in the control system of reactive power compensator for hydroelectric plant with induction generator
Autorzy:: Olesiński, R.
Hańczur, P.
Wiśniewski, J.
Koczara, W.
Powiązania:: https://bibliotekanauki.pl/articles/141283.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: generator indukcyjny
kompensacja mocy biernej
PLC
SCADA
induction generator
reactive power compensation
communication technology
Opis:: The presented paper concerns the issues of communication networks applied to monitoring and control of reactive power compensator for small hydroelectric plants installed in areas distant from urban agglomerations. Ethernet, CAN, Modbus and GPRS transmission protocols has been used. Industrial programmable controller as a data collector has been used also.
Źródło:: Archives of Electrical Engineering; 2012, 61, 3; 411-420
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Economic and Exploitation Aspects of Reactive Power Compensation Consumed by Laboratory Roller Mixer
Autorzy:: Ziółkowski, E.
Bień, A.
Smyksy, K.
Wrona, R.
Powiązania:: https://bibliotekanauki.pl/articles/381941.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: laboratory roller mixer
reactive power compensation
economic analysis
mieszarka rolkowa
kompensacja mocy biernej
analiza ekonomiczna
Opis:: Results of measurements of selected electrical parameters in supply system of laboratory roller mixer (IODi AGH type) during its operation are presented. Basing on the analysis of measured electric parameters and energy consumption the compensation capacitors system was chosen. The effect of improving the power factor cosφ (and also tgφ) has achieved. After capacitors installation in supply system of the mixer drive the measurements of electric parameters and analysis of harmonic of voltage and current were realised. The results were compared with the limit values from electromagnetic compatibility (EMC) standard PN-EN61000-3-2. The economic and operational effects of reactive power compensation in supply system of the mixer have been highlighted.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3 spec.; 103-106
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Designing a group of single-branch filters taking into account their mutual influence
Autorzy:: Klempka, R.
Powiązania:: https://bibliotekanauki.pl/articles/140911.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: passive filter
compensation of reactive power
harmonics
Opis:: Single-branch filters are still popular and are commonly used for power quality improvement purposes. Analysis of a single-branch filter is a relatively simple task. Although individual filters tuned to specific harmonics can be easily designed, after connecting them into a group it turns out that the capacitance and inductance mutually influence each other, distorting the resulting frequency characteristics. This article presents a matrix method for design a group of single-branch filters, so that the resultant frequency characteristic satisfies the design requirements including the requirements for location of the frequency characteristic maxima. Designer indicates the frequencies of the parallel resonances.
Źródło:: Archives of Electrical Engineering; 2014, 63, 1; 81-92
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Balancing reactive compensation at three-phase four-wire systems with a sinusoidal and asymmetrical voltage source
Autorzy:: Sołjan, Z.
Hołdyński, G.
Zajkowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/200474.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: currents' physical components
power theory
asymmetrical voltage supply
balancing reactive compensation
Opis:: The article presents the essentials of reactance compensation of unbalanced loads in three-phase four-wire systems powered by a sinusoidal and asymmetrical voltage source. The whole of compensation and symmetrization is based on the Currents’ Physical Components (CPC) theory. Reactance compensation, i.e. compensation based solely on inductors and capacitors, in four-wire systems requires the device to be included in a star (Y) structure in order to compensate for the reactive current (reactive power) and the current at the neutral conductor caused by zero sequence asymmetry, and for the device in a delta (∆) structure to allow compensation of the reactive current (reactive power) and current, causing asymmetry of the negative sequence.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 1; 71-79
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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