Diagnostyka sinusoidalnych wahań napięcia w sieci elektroenergetycznej z wykorzystaniem wskaźnika ΔV₁₀

• Autorzy: Wiczyński G.

Warianty tytułu

EN

Diagnostics of sinusoidal voltage fluctuations in a power grid using the ΔV₁₀ index

• Języki publikacji: PL

Abstrakty

PL

W artykule omówiono definicję wskaźnika ΔV₁₀. Zaproponowano schemat blokowy miernika ΔV₁₀ i wyznaczono jego równanie przetwarzania dla sinusoidalnej zmienności napięcia. Porównano wartości wskaźników ΔV₁₀ i P_st. Prezentując wyniki porównań obu miar przybliżono możliwości diagnostyczne wskaźnika ΔV₁₀. Odwołując się do zamieszczonych zależności ΔV₁₀, P_st i ƒ_m wykazano, że dla zmienności napięć występujących w sieciach elektroenergetycznych niemożliwe jest przeliczanie jednej miary do drugiej.

EN

The ΔV₁₀ index is a measure of voltage fluctuations in power grids proposed by the Japanese CRIEPI Institute [1] and used all over the Far East countries. European standards prefer P_st and P_lt indicators in voltage fluctuation measurements [11]. The ΔV₁₀ and P_st/P_lt are different in terms of the characteristics of measurement signal chains [6]. Therefore the measures may be characterized by different diagnostic capabilities. This may lead to the situation where some receivers may be described as faultless while voltage fluctuations are acceptable for one measure and may be described as faulty with the voltage fluctuations being unacceptable for the other measure. On the other hand, some level of uncertainty may appear as the influence of a receiver may be classified as obnoxious with the use of one measure and not-obnoxious with the use of the other. The paper includes analytical determination of the ΔV₁₀ index value dependency on the voltage fluctuation reproduced with a sinusoidal amplitude modulation (Eq. (2)). The calculations have been made for the assumed signal chain model of a ΔV₁₀ index measuring instrument (Fig. 3). The values of ΔV₁₀ and P_st indexes at a given sinusoidal voltage fluctuation have been compared (Figs. 4-6). On the basis of the obtained ΔV₁₀ and P_st dependencies on ƒ_m it has been assumed that for the voltage fluctuations present in power grids of unknown type and frequency it is impossible to convert one measure into the other.

Słowa kluczowe

PL

jakość energii elektrycznej; modulacja amplitudy; modelowanie; wskaźnik ΔV10

EN

amplitude modulation; modelling; power quality; ΔV10 index

• Wydawca: Wydawnictwo PAK
• Czasopismo: Pomiary Automatyka Kontrola
• Rocznik: 2013
• Tom: R. 59, nr 5
• Strony: 425--428
• Opis fizyczny: Bibliogr. 12 poz., rys., schem., wykr., wzory

Twórcy

autor

Wiczyński G.

• Politechnika Poznańska, Instytut Elektrotechniki i Elektroniki Przemysłowej, ul. Piotrowo 3A, 60-965 Poznań

Bibliografia

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• [2] Aoki M.: Standard Method For Measurement of Voltage Fluctuations, Proc. of 9th Int. Congress UIE, Cannes 1980, 3-12.
• [3] Moallem P., Zargari A., Kiyoumarsi A.: Improvement in Computation of V10 Flicker Severity Index Using Intelligent Methods, Journal of Power Electronics, 11(2), 2011, 228–236.
• [4] Wang C. S., Chen L. R., Yang W. R.: Analysis of Equivalent 10-Hz Voltage Flicker Measurement Using IEC Flickermeter Standard, Proc. of IEEE Int. Conf. on Industrial Technology, Malaysia 2008.
• [5] Yukihira K.: Problems of estimation technique for voltage fluctuation and research subjects – Comparison between V10 meter and IEC flicker meter, Komae Research Laboratory Rep. No. T99041.
• [6] Novitskiy A., Schau H.: Relationship between the Flicker Criteria ΔV10 and Pst, Proc. of ICHQP, Hong Kong 2012.
• [7] Novitskiy A., Schau H.: Analysis of a Ratio between V10 and Pst Flicker Criteria, Proc. of 46th UPEC, Soest 2011.
• [8] Hsu Y. J., Lu C. N.: A Comparison of V10 and Pst at Industrial Sites with Wind Turbine and Arc Furnace, Proc. of TENCON, Hong Kong 2006.
• [9] Wang L. et al.: Analysis of Measured Flickers Contributed by a Commercial Wind Power Generation System in Taiwan, Proc. of PES General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, Pittsburgh 2008.
• [10] Chang G. W., Lu H. J., Su H. J.: Application of Grey Predictor Model for Forecasting Flicker Severity Associated with Electric Arc Furnace Load, Proc. of ICHQP, Hong Kong 2012.
• [11] PN-EN 61000-4-15:2011, Miernik migotania światła.
• [12] Wiczyński G.: Sectional Approximation of the Flickermeter Transformation Characteristic for a Sinusoidal Modulating Signal, IEEE Trans. on Instrumentation and Measurement, 57(10), 2008, 2355–2363.