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Hi, all. AC power flow calculation can be unsolvable due to lose of the operating point.

I want to identify the bus where to shed load to take back the operation point, and try to leverage the eigenvalues of Jacobian matrix. However, I cannot find the way to use them. What python API to retrieve the eigenvalues?

I looked up the forum and found only this answer: psspy.org/psse-help-forum/question/1487/how-to-do-cascading-failure-simulation/. The user Rounak said to calculate Load Shift Factor based on the entries of the LSF matrix, what are they?

Thank you!