{
  "$schema": "https://ps-wiki.github.io/schema/v1/term.schema.json",
  "id": "outage-transfer-distribution-factor",
  "title": "Outage Transfer Distribution Factor",
  "description": "A PTDF applied to the post-contingency configuration after one or more facilities are removed from service.",
  "language": "en",
  "tags": [
    "sensitivity"
  ],
  "related": [],
  "breaking": false,
  "dates": {
    "created": "2025-03-15",
    "last_modified": "2025-06-19"
  },
  "authors": [
    {
      "name": "Jinning Wang",
      "url": "https://jinningwang.github.io"
    }
  ],
  "content": {
    "sections": [
      {
        "order": 1,
        "id": "definition-by-nerc",
        "title": "Definition by NERC",
        "type": "definition",
        "source_keys": [
          "nerc2024glossary"
        ],
        "page": null,
        "body_md": "> In the post-contingency configuration of a system under study, the electric Power Transfer Distribution Factor (PTDF) with one or more system Facilities removed from service (outaged).\n"
      },
      {
        "order": 2,
        "id": "definition-by-powerworld",
        "title": "Definition by PowerWorld",
        "type": "definition",
        "source_keys": [
          "powerworld2025manual"
        ],
        "page": "Sensitivities > Line Outage Distribution Factors > Line Outage Distribution Factors (LODFs)",
        "body_md": "> An OTDF is similar to PTDF, except an OTDF provides a linearized approximation of the **post-outage change** in flow on a transmission line in response to a transaction between the Seller and the Buyer. The OTDF value is a function of PTDF values and LODF values.\n\nCalculations can be found in the source reference.\n"
      }
    ]
  }
}