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Power Transformer’s Electrostatic Ring Optimization Based on ANSYS Parametric Design Language and Response Surface Methodology

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Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071003, China
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State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
3
Shandong Power Equipment Co., Ltd., Jinan 250022, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(20), 4286; https://doi.org/10.3390/app9204286
Received: 17 September 2019 / Revised: 7 October 2019 / Accepted: 10 October 2019 / Published: 12 October 2019
In this paper, in view of the low efficiency of the traditional finite element method (FEM), which has been widely used in the insulation design of power transformers, the response surface methodology (RSM) is proposed to optimize the insulation structure of a power transformer electrostatic ring. Firstly, the power transformer model was built using the ANSYS parametric design language (APDL) to realize the automatic pre-processing of numerical calculation. Then with the objective of reducing the maximum electric field intensity, the Taguchi method was used to select the parameters that have a greater impact on the maximum electric field intensity, by which the subsequent optimization process could be effectively simplified. The test points were constructed by the central composite design (CCD) and a response surface model was established by the mutual calls of MATLAB and ANSYS. Finally, the variance analysis, diagnostic analysis, and significance test of regression were carried out to obtain the final response surface model. By comparing the result of RSM with that of FEM, we can find that the results obtained by the two methods are consistent and the maximum electric field strength is obviously reduced. The RSM is more systematic and convincing, which improves the optimization efficiency and provides a reliable and fast way for the optimization of power transformers. View Full-Text
Keywords: power transformer; response surface methodology (RSM); ANSYS parametric design language (APDL); electric field analysis; electrostatic ring optimization power transformer; response surface methodology (RSM); ANSYS parametric design language (APDL); electric field analysis; electrostatic ring optimization
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MDPI and ACS Style

Liu, G.; Hou, D.; Zhao, X.; Yuan, D.; Li, L.; Sun, Y. Power Transformer’s Electrostatic Ring Optimization Based on ANSYS Parametric Design Language and Response Surface Methodology. Appl. Sci. 2019, 9, 4286.

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