Distortion Characteristics and Experimental Research on Transformer Windings under Harmonic Condition

[摘要] Firstly, the limitations of the existing transformer harmonic models both at home and abroad are analyzed. Based on this, the influence of the skin effect and the proximity effect on the windings under harmonics conditions is considered. Based on the electromagnetic field principle, the paper analyses the distortion characteristics of winding resistance parameters, introduces the AC power group coefficient and establishes of winding harmonic loss model. Compared with the traditional engineering calculation method, we can see that the theoretical model proposed in this paper can improve the accuracy and make the transformer winding loss calculation more accurate, Therefore, the model has certain guiding value for engineering calculation.

[发布机构] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District Beijing; 102206, China^1

[效力级别] 电工学

[关键词] Engineering calculation;Experimental research;Harmonic model;Proximity effects;Theoretical modeling;Traditional engineerings;Winding harmonics;Winding resistances