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A New Three-Phase Three-Winding Transformer ...
International Journal of Smart Grid and Clean Energy A New Three-Phase Three-Winding Transformer Electromagnetic Transient Model Biao Wanga*, Zhenghong Wangb a Sichuan Electric Power Research Institute, Chengdu 610072, China b Southwest Petroleum University, Chengdu 610500, China Abstract This paper firstly points out a defect of the damping trapezoidal method in electromagnetic transient simulation algorithm. The backward Euler method is recommended to use. Then, a new Three-Phase Three-Winding Transformer model which could consider ratio and connection group feature is put forward. Compared with PSCAD, it is obtained the proposed model is accurate and reliable. Keywords: Electromagnetic transient, Three-Phase Three-Winding Transformer , backward Euler method 1.
42 International Journal of Smart Grid and Clean Energy, vol. 2, no. 1, January 2013 Meanwhile, the simulation curve of current transformer CT_L2203's current by damping trapezoidal method is shown in Figure 3 (a). It can be seen that the CT_L2203's current has to numerical oscillate a
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