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Wyszukujesz frazę "power quality energy" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Review of voltage fluctuation measures in power quality analyzers
Autorzy:
Wiczyński, G.
Powiązania:
https://bibliotekanauki.pl/articles/97690.pdf
Data publikacji:
2012
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
electrical energy
voltage
power quality
Opis:
Similarly to a number of other quantities, those describing voltage variation make it possible to provide a complete assessment of the quality of electrical energy. Voltage variation may be described by measures used to assess the obnoxiousness of voltage fluctuations or measures that help indicate the source of fluctuations. The paper provides a comparison of the three most popular measures: the Umax maximum and Umin minimum rms voltage values, the Pst short-term flicker indicator, and voltage fluctuation indicators. The part that specifies the particular measures (including an additional description of the ∆V10 indicator) also contains their short descriptions. The main part of the dissertation describes the dependence of the voltage fluctuation measures on the frequency of the fm amplitude and frequency modulating signal. Observations drawn allow to specify the diagnostic capabilities of particular measures. Due to the complexity of voltage fluctuation measures’ studies the paper deals with only a certain aspect of it and should be concerned as a step to understanding the idea of voltage fluctuation measures.
Źródło:
Computer Applications in Electrical Engineering; 2012, 10; 308-316
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combined monitoring and time-frequency analysis for transients in wind energy systems
Autorzy:
Łobos, T.
Sikorski, T.
Amarís, H
Alonso, M
Florez, D
Powiązania:
https://bibliotekanauki.pl/articles/1395766.pdf
Data publikacji:
2010
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
power quality monitoring
wind energy
wind power plant
Opis:
The aim of this paper is the application of selected time-varying power quality indices combined with detailed time-frequency analysis for assessment of transients in wind energy system. Presented proposition utilizes short-term harmonic distortion in voltage (STHDV) characteristic as an indicator for detail local time-frequency analysis of the transients. Introduced ideas can be treated as hybrid system absorbing both power quality indices and time-frequency representation.
Źródło:
Computer Applications in Electrical Engineering; 2010, 8; 261-269
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy balance and quality in electric network powering IT objects
Autorzy:
Bednarek, K.
Kasprzyk, L.
Powiązania:
https://bibliotekanauki.pl/articles/97479.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
quality of energy
disturbance waveforms
higher harmonics
energy balance
reactive power compensation
Opis:
The paper deals with elements of issues regarding the impact of electromagnetic disturbances and electric energy management. The energy balance and tests of distortions of voltage and current waveforms in the power supply system of an IT facility such as a computer laboratory were carried out. The measurements covered current and voltage values, active power, reactive power and apparent power, power factor and THD (Total Harmonics Distortion) factor for voltage and current, waveforms and content of current and voltage harmonics in the facility under consideration. On top of this, effects of the UPS EVER POWERLINE power supply, provided with the reactive power compensation function (without connecting reactive compensation components) were tested in reference to the reactive power consumption by devices connected in parallel with the UPS to the electric network in the object. The analyses were carried out in terms of introducing rationalization of energy management and eliminating the impact of disturbances in systems covering power supply and energy receivers, that is, achieving technical (reliability of devices) and economic benefits (reduction in operational costs resulting from occurring power losses and in charges collected for consumption of electricity) in using large powered objects.
Źródło:
Computer Applications in Electrical Engineering; 2016, 14; 113-126
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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