scholarly journals Alternative Phase-domain Model for Multi-conductor Transmission Lines Using Two Modal Transformation Matrices

2015 ◽  
Vol 44 (3) ◽  
pp. 291-301 ◽  
Author(s):  
Carolina Goulart de Carvalho ◽  
Eduardo C. Marques Costa ◽  
Sérgio Kurokawa ◽  
José Pissolato
Keyword(s):  
Transmission Lines ◽  
Domain Model ◽  
Transformation Matrices ◽  
Phase Domain

Two-Port Characteristic Analysis for Transformers with the Large Scale Windings Based on Sparse Matrix

2014 ◽  
Vol 986-987 ◽  
pp. 2035-2038
Author(s):  
Xu Dong Zhang ◽  
Jian Ye Yuan ◽  
Jing Ping Zhang ◽  
Jian Ying Feng
Keyword(s):  
Transmission Lines ◽  
Large Scale ◽  
Sparse Matrix ◽  
Domain Model ◽  
Computation Method ◽  
Characteristic Analysis ◽  
Matrix Operation ◽  
Large Matrix ◽  
Calculation Results ◽  
Block Storage

In order to calculate the two-port wide frequency parameters of a large transformer quickly and accurately, parameter calculation of multi-conductor transmission lines model is proposed based on the sparse matrix operation. It solved the problem caused by the large matrix. Firstly, multi-conductor transmission lines model of the transformer windings is established. Secondly, matrix characteristics ofYandZis analyzed, based on which the block storage and computation method is applied. Then the frequency-domain model is solved based on sparse matrix operation. At last, taking a SS11-20000/110 transformer as an example, the correctness of this method has been verified by comparing calculation results with measurement results.

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