Abstract
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.
Export citation and abstract BibTeX RIS
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.