Modelling transfomers

[akshetty9]

Modelling example for transformer connects the lines directly to transformer end. How should we model it if transformer connects to a line through a bus ?. Similarly how do we represent the connection between line and load through a bus?

{
  "name": "A provider, a transformer and a consumer",
  "nodes": [
    {
      "id": "Source",
      "type": "provider",
      "v_gen": 22,
      "p_gen_max": 1,
      "p_gen_min": 0,
      "q_gen_max": 1,
      "q_gen_min": 0
    },
    { "id": "Load", "type": "consumer", "v_min": 10, "v_max": 12 },
    {
      "id": "Transformer primary",
      "type": "transition",
      "v_min": 20,
      "v_max": 24
    },
    {
      "id": "Transformer secondary",
      "type": "transition",
      "v_min": 10,
      "v_max": 12
    }
  ],
  "lines": [
    {
      "id": "Source-Transformer line",
      "source": "Source",
      "target": "Transformer primary",
      "r": 0.1,
      "x": 0.1
    },
    {
      "id": "Transformer-Load line",
      "source": "Transformer secondary",
      "target": "Load",
      "r": 0.1,
      "x": 0.1
    }
  ],
  "transformers": [
    {
      "id": "Transformer",
      "connections": [
        { "node_id": "Transformer primary", "end_voltage": 22 },
        { "node_id": "Transformer secondary", "end_voltage": 11 }
      ],
      "modes": [
        {
          "source": "Transformer primary",
          "target": "Transformer secondary",
          "operation": "automatic"
        }
      ]
    }
  ],
  "@schema_version": 1
}

[o-kloster]

First, we're very sorry for the late reply. Unfortunately, everybody forgot to enable watching the repo, so we were not notified of the issue.

I'm not sure I understand the question -- maybe it's just a problem of terminology? This example contains 4 buses: "Source", "Transformer primary", "Transformer secondary" and "Load". They're called nodes in the json format, which emphasizes the topological aspect over the electrical.
Both the transformer and the line "Source-Transformer line" are connected to bus "Transformer primary" (and similarly for the secondary side). So, I would say that in the example the transformer is connected to a line though a bus (node).

The node "Load" has type "consumer", which means that it is a bus where a load is connected. The load is not a separate entity in this model, but implicit in the node. However, it would be correct to say that the example models a load connected to a line through a bus.

Does this answer your question?