一种三相三绕组变压器的电磁暂态模型研究

摘要:

基于变压器的等值电路图，提出一种可模拟变比、联结组、内部故障和相间耦合等特性的三相三绕组变压器 电磁暂态仿真模型，并给出详细的计及变比和联结组特性的变压器模型推导公式。计算结果与商业软件PSCAD 比 较，可得所提出的模型准确、可信，能满足实际工程和研究分析的需求。

Abstract:

Based on the equivalent circuit diagram of transformer，a new electromagnetic transient simulation model for three － phase three － winding transformer is proposed which could simulate the characteristics of transformation ratio，connection symbol， internal fault and interphase coupling and so on，and a detailed derivation formula of transformer model is given which considers the characteristics of transformation ratio and connection symbol． The proposed model is accurate and reliable，and satisfied with the actual needs of engineering and research comparing with PSCAD．