基于相分量法的新型换流变压器数学模型

发布时间：2018-05-31 02:32

本文选题：换流变压器 + 数学模型　；参考：《电工技术学报》2007年01期

【摘要】：与传统的换流变压器相比,自耦补偿与谐波屏蔽换流变压器具有独特的绕组联结方式。本文以变压器耦合电路原理为基础,以实际变压器设计参数为依据,首次以相分量法建立了反映新型换流变压器绕组联结特点、电气参数等信息的基本数学模型。并结合统一广义双侧消去法,通过对基本模型的拓展,建立了更为详细的计及中性点接地阻抗的节点拓展模型、计及二次角接三角形绕组抽头处滤波装置的支路拓展模型与将抽头处无源设备等效为变压器本体一部分的等效双绕组变压器模型,便于在实际工程中灵活应用。该建模方式合理、简捷、准确,对于解决各种复杂多绕组变压器建模问题具有普遍意义。实际算例表明,所建立的数学模型计算精度高,可用于解决电力系统中与变压器相关的各种实际工程的计算问题。
[Abstract]:Compared with the traditional converter transformer, the self-coupling compensation and harmonic shielding converter transformer have unique winding connection. Based on the principle of transformer coupling circuit and the design parameters of actual transformer, the basic mathematical model which reflects the characteristics of winding connection and electrical parameters of new converter transformer is established by phase component method for the first time. Combined with the unified generalized double side elimination method and the extension of the basic model, a more detailed node expansion model considering the neutral grounding impedance is established. Considering the branch expansion model of the filter device at the tap of the second angle-connected triangular winding and the equivalent dual-winding transformer model, the passive equipment at the tap is equivalent to a part of the transformer body, which is convenient for flexible application in practical engineering. The modeling method is reasonable, simple and accurate, which is of general significance for solving various complex multi-winding transformer modeling problems. Practical examples show that the established mathematical model has high accuracy and can be used to solve various practical engineering problems related to transformers in power system.
【作者单位】：湖南大学电气与信息工程学院湖南大学电气与信息工程学院湖南大学电气与信息工程学院湖南大学电气与信息工程学院湖南大学电气与信息工程学院
【基金】：湖南省重大科技专项资助项目(05GK1002-1)。
【分类号】：TM42

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