andes/andes/case/npcc/npcc.xlsx In "PQ" and "PV" sheets, why one bus is repeated twice in the column named "bus".? about andes HOT 5 CLOSED

You can use the same issue without creating a new one.

It is a misconception to assign a "type" (PQ or PV, or Slack) for a bus. In fact, you can have multiple PQs or multiple PQs with at most one PV on any bus. Milano has a discussion in PSAT's manual (don't remember exactly where it was though).

If multiple PQs are present on the same bus, the program will combine the total P and Q. If one PV and multiple PQs are present, the net P will be calculated by subtracting the load from the generation, and the generator's Q will be calculated after offsetting the PQ's reactive power.

from andes.

In andes/andes/tests/npcc/npcc48.dm
This file lists the data about the buses and branches. The number of PQ buses is 83 and the number of PV buses is 46. The total number of the PQ. PV and Slack bus are 130. Why 10 buses are not listed in the code? Are these buses zero injection buses?

from andes.

In andes/andes/case/npcc/npcc.xlsx
I suppose that one bus cannot be a PQ and a slack bus simultaneously. In this npcc.xlsx, the bus number is 78 in the 41th row in PQ sheet, and the bus number is also 78 in Slack sheet. I was a little confused about this part. Thank you for your clarifications. ^-^

from andes.

Consider "Slack" as a generator that controls V and angle. You can have such a generator and a PQ load connected to the same bus.

Behind the scene, after the calculation, the PQ load is added to Slack's final power solution.

The issues you mentioned is not an error. You can use ANDES to solve the NPCC system.

from andes.

Thanks for your explanation.

from andes.