作　　者： ; ; ; ;

机构地区： 湖南大学电气与信息工程学院

出　　处： 《中国电机工程学报》 2006年第9期144-149,共6页

摘　　要： 在我国的电气化铁道牵引供电系统中,YN/?平衡变压器(含阻抗匹配平衡变压器)是应用最为广泛的牵引变压器。该变压器绕组结构复杂,设计制造技术要求较高,特性分析难度较大。文中提出并证明了设计YN/?平衡变压器绕组阻抗必须满足的中性点接地条件与平衡条件;建立了YN/?平衡变压器的数学模型,并提出了标准规范的求解计算方法;理论分析与仿真计算表明,在设计平衡变压器必须满足的阻抗约束关系中,应优先满足中性点接地条件的要求;最后,还提出了交叉绕组短路阻抗计算的实用简化算法。文中对YN/?平衡变压器特性分析与设计制造中的理论与计算问题做了系统的研究。 In the electric railway power supplying systems in China, YNA↓connected balance transformers （including impedance-matching balance transformer） are most commonly used as traction transformers. This kind of transformers has complicated structure and high requirements in both design and manufacture; therefore, it is difficult to analyze its electric characteristics. This paper presents and proves the neutral point grounding condition and the three-phase impedance balance condition of YNA↓ connected balance transformer; it also sets up its mathematic model and gives standard method of calculation and evaluation. Through theoretic analysis and simulation, it shows that the neutral point grounding condition should be satisfied firstly during designing and manufacturing process. Finally, it discusses the simplified method to calculate crosswindings impedance of the transformer. In conclusion, this paper comprehensively analyzes the characteristic, designing and manufacture theory of YNA↓ connected balance transformer.

关 键 词： 阻抗匹配平衡变压器 牵引供电系统 交叉绕组

领　　域： [电气工程]