单螺旋绕组变压器支路电流的场路耦合计算及分析

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Abstract Transformer windings circulating currents between parallel conductors will lead to loss increasing and local overheating, which will affect the operation of transformer. Based on field-circuit coupled method, the finite element model and mathematical model of single spiral winding transformer are established. The field-circuit coupled model takes every branch current as independent variable to make up of the stiffness matrix. The branch currents of different transposition patterns are calculated and their influence factors are analyzed. The calculation results of induced current and short-circuit impedance are well matched with the designed values, which demonstrates that the method in this paper is effective. At the same time, this research also shows that in the same conditions, the "424" transposition has the advantage of small circulation current losses, but it is not obviously in inhibiting circulation current losses compared with the "212" transposition. In view of the uniform distributions of branch currents and losses, the "212" transposition should be the best choice in the three transposition patterns of single spiral winding.

Key words： Transformer field-circuit coupled method single spiral winding uncompleted transposition branch current

Received: 11 December 2008 Published: 04 March 2014

PACS:

TM41

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	Articles by authors
	Guo Jian
	Lin Heyun
	Xu Zihong
	Jin Chengxiang
	Li Ning

Cite this article:

Guo Jian,Lin Heyun,Xu Zihong等. Calculation and Analysis of Branch Currents of Single Spiral Winding Transformer Based on Field Circuit Coupled Method[J]. Transactions of China Electrotechnical Society, 2010, 25(4): 65-70.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2010/V25/I4/65

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作者简介:郭健男, 1980年生, 博士, 讲师, 从事电机、电器及电力变压器物理场计算的研究。林鹤云男, 1965年生, 教授, 博士生导师, 从事新能源发电与分布式电源系统、稀土永磁电机设计与驱动、电机电器物理场的研究。