Hi All!
I am developing a program that is based on a phase coordinate method for calculating currents and voltages. And if there is a transformer in the circuit, then I have a problem: matrix for transformer can be with size 6x6 or more, while matrix for line and load are 3x3. I do not understand how in this case it is possible to add matrices to get a Ybus matrix with size NxN, where "N" is the total number of nodes? Can you share your experience?
I am developing a program that is based on a phase coordinate method for calculating currents and voltages. And if there is a transformer in the circuit, then I have a problem: matrix for transformer can be with size 6x6 or more, while matrix for line and load are 3x3. I do not understand how in this case it is possible to add matrices to get a Ybus matrix with size NxN, where "N" is the total number of nodes? Can you share your experience?