Application of finite element method for electro‐thermal modeling of metal oxide surge arrester

Abstract

Analysis of electro‐thermal behavior in various operating condition based on finite element method was proposed in this article. Power frequency and impulse stresses vary the operating region and temperature of surge arresters. Therefore, adaptive power loss was considered as a source in the modeling of surge arrester based on finite element method. Adaptive network based fuzzy inference system and frequency dependent model were used to model power loss in low and high current regions, respectively. To obtain accurate power loss, which is very important factor in electro‐thermal analysis, applied voltage and temperature were considered as inputs in adaptive network based fuzzy inference system model. The experimental setup including impulse generator, power frequency high voltage generator and also an oven was arranged to achieve real data. Finally, the results of simulation based on proposed adaptive method were compared with the thermal infrared camera results. This study shows that the electro‐thermal behavior of surge arrester is predictable with a good accuracy by using artificial model. © 2015 Wiley Periodicals, Inc. Comput Appl Eng Educ 23:910–920, 2015; View this article online at http://wileyonlinelibrary.com/journal/cae; DOI

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“…This could lead to frequent explosions of the roof arrestor. There are various causes of EMU arrestor failure, including internal damp [1], resistances aging [5,6], poor manufacturing processes [7][8][9][10][11], and frequent overvoltage [12][13][14][15][16][17].…”

“…(2) The arrestor's aging failure can be accelerated by a lack in the manufacturing process, mechanical stress and electric power during production and operation [14], a gas gap or rift inside the solid cutoff [15], and partial discharge under the influence of radiation, wind, and rain, among other factors [16][17][18].…”

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“…This varistors column has been kept inside a cylindrical housing of polymer or porcelain. Zinc oxide has highly nonuniform voltage–current (V–I) characteristics [22]. This typical V–I characteristic of zinc oxide leads to designing gapless zinc oxide lightning arrester for surge protection applications.…”

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“…To improve the safe operation of transmission lines, a metaloxide arrester (MOA) (Hoang et al, 2017) is developed to protect the line insulation from over-current based on its superior overvoltage protection performance that has become the standard configuration of over-voltage protection applied in power transmission (Vita and Christodoulou, 2016) and transformation equipment (Seyyedbarzegar and Mirzaie, 2015). In general, the advantages of MOA can be mainly summarized as: 1) fast response, flat volt-ampere characteristics, and high stablility; 2) large flow capacity, low residual pressure, long service life, and simple structure; 3) wide application in power transmission, transformation, and distribution systems; 4) compared with the traditional porcelain sheath arrester, the composite sheath has the advantages of small size, lightweight, solid structure, strong pollution resistance, good explosion-proof performance, and so on.…”