Re: Violation of Voltage Magnitude Constraints

[Carlos E Murillo-Sanchez]

#FOO CEJUN, JOEL# wrote: I am a student working on an OPF model for a 15 bus power system. I discovered an issue whereby the converged voltage magnitude output values do not keep within the voltage constraints, which I have set to be Vmax= 1.05 and Vmin= 0.95. This happens primarily for the PF study only.� I would like to know why would there still be a converged output even if the voltage constraints are not met.� Thank you in advance for any response to this query. Please refer to the following screenshots for reference. Hi Joel; The traditional power flow problem, as conceived, is only about "solving the circuit", not about dispatching generators to meet voltage or transmission constraints.� There's no reason to expect that the solution of a power flow will meet such constraints.� Please study the statement of the power flow problem in any power systems textbook.� If you want the solution to meet those constraints, then you solve a different kind of problem, not a power flow.� One way is with an optimal power flow; there are others. Carlos.