Equivalent Multi-Surge Impedance Model of Transmission Line Towers

• Autorzy: Du L. , Yu S. , Mi X. , Yang Q. , Wang Y.

Warianty tytułu

PL

Model impedancyjny energetycznej wieży przesyłowej w warunkach wielokrotnych przepięć

• Języki publikacji: EN

Abstrakty

EN

To analyze exactly the wave propagation processes of a transmission tower when lightning strikes, an equivalent model of a transmission tower was studied in this paper. First, based on the correlative theory of tapered antenna, an equivalent surge impedance model of a single stanchion of tower was made. This tower was regarded as a four-conductor system according to the real configuration of a tower, and the equivalent impedance of the four-conductor system was obtained by multiplying the single pillar impedance with the compensation factor. Combined with the definition of wave impedance regarded with inductance and capacitance, the compensation factor of the four-conductor system was introduced. Then, the bracings equivalent model was obtained based on the analysis of the effect of bracings on the main body of a tower, and an equivalent impedance model of the crossarms was built base on the correlation theory of the equivalent model of parallel multi-conductors. In modularizing the tower model, the equivalent impedance of the tower was found. Finally, a 500 kV tower was calculated in this paper using the equivalent impedance model of the tower.

PL

W artykule przedstawiono badania propagacji fali w energetycznej wieży transmisyjnej, po uderzeniu pioruna. Analizę przeprowadzono na podstawie modułowego modelu anteny w dwóch etapach. Najpierw stworzono model impedancyjny przepięcia w wierzy jednopodporowej, a następnie uwzględniono elementy usztywniające. Wykonano przykładowe obliczenia dla wieży pracującej przy napięciu 500 kV.

Słowa kluczowe

EN

transmission tower; Surge impedance model; Electric and Magnetic energy; Compensation factor

PL

wieża przesyłowa; impedancyjny model przepięć; wskaźnik kompensacji; energia elektryczna; energia magnetyczna

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2012
• Tom: R. 88, nr 12a
• Strony: 259--263
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Du L.

autor

Yu S.

autor

Mi X.

autor

Yang Q.

autor

Wang Y.

• State Key Laboratory of Power Transmission Equipment & System Security and New Technology (Chongqing University), Shapingba District, Chongqing 400030,

Bibliografia

• [1] Wang H., Lui J., He J.l., Chen S.M., Sun W.M., Influence of Transmission Tower on Measured Lightning Currents, High Voltage Engineering., (34)2008, No. 9,1910-1914.
• [2] Yang Q., Zhao J., SiMa W.X., Feng J., Yuan T., Lightning Back-Flashover Performance of theYun-Guang UHV DC Transmission Lines, High Voltage Engineering, (34)2008, No. 7, 1330-1335.
• [3] Wang X.H., Zhang X.Q., Lightning Transients of Wind Turbine Towers Involving Frequency-dependent Characteristics, High Voltage Engineering, (35)2009, No. 6, 1344-1349.
• [4] Breuer G.D., Schultz A.J., Schlomann R.H., Field studies of the surge response of a 345-kV transmission tower and ground wire, AIEE Trans on Power Apparatus and System, (76)1957, No. 3,1392-1396.
• [5] Kawai M., Studies of the surge response on a transmission line tower, IEEE Trans on Power Apparatus and System, (83)1964, No. 1, 30-34.
• [6] Ishii M., Kawamura T., Multistory transmission tower model for lightning surge analysis, IEEE Trans on Power Delivery, (6)1991, No. 3,1327-1335.
• [7] Hara T., Yamamoto O., Modeling of a transmission tower for lightning surge analysis, IEE Proc IEE Proc Gener Trans Distrib, (143)1996, No. 3, 283-289.
• [8] Jordan C.A., Lightning computations for transmission lines with overhead ground wires part Ⅱ, General Electric Review, (34)1934, 180-185.
• [9] Wagner C.F., Hileman A.R., A new approach to calculation of lightning performance of transmission linesⅡ, AIEE Trans on Power Apparatus and System, (78)1959, No. 4, 996-1020.
• [10] Sargent M.A., Darveniza M., Tower surge impedance, IEEE Trans on Power Apparatus and System, (88)1969, No. 5, 680-687.
• [11] Yamada T., Mochizuki A., Ishii M., et al. Experimental evaluation of a UHV tower model for lightning surge analysis, IEEE Trans on Power Delivery, (10)1995, No. 1, 393-402.
• [12] Mu Y., Zeng C.Y., Study of Tower Surge Impedance, High Voltage Engineering, (64)1992, No. 2, 9-13.
• [13] Gutierrez J.A., Moreno P., Naredo J.L.,Nonuniform transmission tower model for lightning transient studies，IEEE Trans on Power Delivery, (19)2004, No. 2, 490-496.
• [14] Jordan E.C., Electromagnetic waves and radiating systems, American Journal of Physics, (19)1951, No. 8, 477-478.
• [15] Yu J.H., Principle of Electromagnetic Field, Chongqing: Chongqing University Press, 2003.
• [16] Yang X.Q., Zhao J.S., Wang Y., Electromagnetic Field and Electromagnetic Wave, Beijing: National Defence Industry Press, 2002.
• [17] Zhang W.B., He J.L., Gao Y.M., The Overvoltage Protection and the Insulation Coordinate, Beijing: Tsinghua University Press, 2002.