A Top-oil Temperature Prediction Method for the Split Transformer Based on PSOGSA

[摘要] Because of the complicated structure of cooling system, the heat radiation principle and top-oil temperature prediction of the split transformer is attracting more and more attention. This paper proposes a top-oil temperature prediction method for split transformer based on PSOGSA. Based on the thermal circuit of ordinary transformers, a thermal circuit for split transformers is proposed taking the heat radiation principle into account. Besides, the model is modified with the consideration of the non-linear heat resistance, load ratio and oil viscosity. Further, the parameters of the model are optimized by PSOGSA. Finally, the method proposed is tested by on-site temperature-rise experiment. The test results prove that the method could provide a high-precision prediction result of the top-oil temperature for split transformer.

[发布机构] Electric Power Research Institute, SMEPC, 171# Handan Rd., Shanghai, China^1;School of Electrical Engineering, Shandong University, 27# South Shanda Rd., Jinan, China^2

[效力级别] 电工学

[关键词] Complicated structures;High-precision;Non linear;Oil viscosity;Radiation principle;Temperature rise;Thermal circuits;Top oil temperature