See Also
The Save Ybus or Power Flow Jacobian dialog is used to store the power system bus admittance matrix (Ybus) and/or the power flow Jacobian in a text format that can be easily read into other programs such as MATLABÒ. This dialog is primarily designed for users doing power system analysis research. The dialog has the following fields.
Ybus in MATLAB Format
YBus Save File
Enter the name of the file in which to store the Ybus data. The Ybus data is stored using the MATLAB sparse matrix format in the matrix Ybus. If the Include Bus Voltages field is checked, then the bus voltages are also stored, but in the vector V.
Save Ybus in MATLAB Format
Click this button to save the Ybus.
Power Flow Jacobian in MATLAB Format
Jacobian Save File
Enter the name of the file in which to store Jacobian data. The Jacobian is stored using the MATLAB sparse matrix format in the matrix Jac.
Jacobian ID Save File
Enter the filename to store the text identifier information. This information is used to translate the bus numbering convention used in the Jacobian and Ybus files with the actual bus number and name in the case.
File Type
Choose the type of MATLAB file you wish to save as. The MATLAB .M Format is the more common text format used for directly loading MATLAB information. The Text for MATLAB Ascii is for use with MATLAB’s ability to read Ascii files. The Ascii file type can be read into MATLAB much faster than the traditional .M files. The MATLAB .M Format in Scientific Notationis the same as in Matlab .M format but the values are presented in scientific notation and will show up to seven significant digits (for example: 1.234567E-2 for 0.01234567)
Jacobian Form
Select Rectangular to store the rectangular form of the Jacobian, or Polar to store the polar form of the Jacobian.
Save Jacobian
Click this button to save the Jacobian and object identifier information.