Study and Analysis of Longitudinal Equivalent Capacitance of Special Axial Internal Shield Continuous Winding Used in UHV Converter Transformers

In this paper, the author accorded to the structure characteristics of the winding, put forward a kind of finite element method for calculating turn-to-turn capacitance, capacitance between bread and longitudinal equivalent capacitance, and longitudinal equivalent capacitance of axial internal shield continuous type, ordinary internal shield continuous type and conventional continuous type is compared and analyzed by use this method. The results show concluded that axial internal shield continuous winding has a larger longitudinal equivalent capacitance than other winding types, so it has more excellent anti-impulse performance.