基于优化算法的变压器绕组等效电路建模

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Abstract To improve the consistency of the frequency response analysis (FRA) curves obtained by the equivalent circuit simulation and measurement, a variety of optimization algorithms are used to optimize the parameters of an equivalent circuit of a transformer winding laboratory model to build an accurate circuit model of the winding. Firstly, the equation for calculating the FRA curve of the lumped parameter equivalent circuit model (LPECM) of transformer winding is derived by node-voltage matrix algorithm. Secondly, a comparison is performed to preliminarily select three algorithms among optimization algorithms. Furthermore, the selected three algorithms are applied to optimize the parameters of different LPECMs. Meanwhile, the best optimization algorithm is determined by minimizing the values of the fitness function, parameter offsets, similarity and deviation between the measured and the simulated FRA curves. Finally, based on the selected optimization algorithm, the influence of iteration times on optimization results is studied and the optimal iteration number is determined by comparison. Then, the optimal equivalent circuit parameters are obtained and the final equivalent circuit model of transformer winding is established. The contribution of this paper can be used to improve the calculation accuracy of FRA curve based on the LPECM of transformer winding.

Key words： frequency response transformer winding optimization algorithm equivalent circuit model

Received: 23 May 2023

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	Articles by authors
	YANG Siying
	WANG Song
	CHEN Zhihao
	XIE Fei
	YU Kerui

Cite this article:

YANG Siying,WANG Song,CHEN Zhihao等. Equivalent circuit modeling of transformer winding based on optimization algorithms[J]. Electrical Engineering, 2023, 24(8): 29-36.

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http://dqjs.cesmedia.cn/EN/Y2023/V24/I8/29

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