基于稀疏列表法的新型换流变压器数学模型  

The New-Type Converter Transformer’s Mathematical Model Based on Sparse Tabular

作　　者：罗隆福[1] 张杰[1] 李勇[1] 许加柱[1] 李季[1] 刘福生[1] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《电工技术学报》2008年第4期59-65,共7页Transactions of China Electrotechnical Society

基　　金：湖南省重大科技专项资助项目(05GK1002-1)

摘　　要：稀疏列表法是一种用于建立电网络方程的有效方法,具有能同时求解所有支路电压和支路电流的特性。文章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,并结合新型换流变压器耦合电路的有向图,首次通过稀疏列表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。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和计及二次侧角接三角形绕组抽头处滤波装置的支路拓展模型,便于在实际工程中灵活运用。实际算例验证了所建数学模型的正确性。文章的建模方法输入参数少、简单灵活,对于解决各种复杂多绕组变压器建模问题具有普遍意义。Sparse tabular method is an effective method which is used to build electric-network equation. It has the characteristic of solving all branch voltage and current at the same time. Based on the transformer coupling circuit principle and the actual transformer design parameter, the three-phase basic mathematical model, which included the information about the new-type converter transformer’s wiring feature, the electrical parameters is presented according to the sparse tabular method combined with the digraph of coupled circuit. Through evolution of the basic mathematical model, the node continuation model including the earth impedance of the neutral point, the branch continuation model including the filters connected with the secondary corner delta winding’s tap are established. These models can be selected flexibly in practical projects. Calculation results prove that the models which are created are correct. This kind of modeling way is easy and flexible. It needs few input parameters and has universal significance in solving kinds of the complicated transformer modeling problems.

关 键 词：换流变压器 数学模型 稀疏列表法 有向图 

分 类 号：TM41[电气工程—电器]