Grid formers

Grid formers are considered as fix voltage sources in the power flow calculation.

"grid_formers":[
                 {"bus": "Bus_1",
                  "bus_nodes": [1, 2, 3], "deg": [0, -120, -240],
                  "kV": [0.23094, 0.23094, 0.23094]}
               ]

where:

• "bus": name of the bus
• "bus_nodes": list of nodes where the grid former source is connected
• "kV": phase-neutral RMS voltages list (kV)
• "deg": phase-neutral voltage angles list (deg)