Abstract
The electric field characteristic of oil-paper/pressboard composite insulating structures under impulse voltage is critical for reliable design of transformer. Common design methods rely on the simulation results, lacking of the verification of actual measurement, and do not consider effect of temperature. In order to conduct the research about the effect of temperature on the electric field characteristics in the oil of oil-pressboard under impulse voltage, an electric field measurement platform based on Kerr electro-optic effect is built. The electric field distributing features in different positions of oil at different time and temperatures under impulse voltage are captured. The results show that with the temperature mounting up, the field strength peak value at 60 ℃ has decreased by 5.2% compared with it at 25 ℃. With the temperature increasing, the electric field tends to show uniform distribution, the field strength distribution in the oil reaches the stable stage at 0.60 µs under 50 ℃. The results of this paper are willing to provide test basis for transformer insulation optimization design.
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This manuscript is supported by the scientific research project of State Grid Economic and Technological Institute Co., Ltd., grant SGJY0000WLJS2100387.
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Wu, J., Yuan, Q., Chen, C., Gao, C., Qi, B., Li, C. (2022). The Effect of Temperature on the Distribution Characteristics of Spatial Electric Field in Oil of Oil-Pressboard Insulation Under Impulse Voltage. In: Liang, X., Li, Y., He, J., Yang, Q. (eds) The proceedings of the 16th Annual Conference of China Electrotechnical Society. Lecture Notes in Electrical Engineering, vol 890. Springer, Singapore. https://doi.org/10.1007/978-981-19-1870-4_24
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DOI: https://doi.org/10.1007/978-981-19-1870-4_24
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