{
  "$schema": "https://ps-wiki.github.io/schema/v1/term.schema.json",
  "id": "electrical-resonance",
  "title": "Electrical Resonance",
  "description": "The behavior of power systems with conventional turbine-generators and variable speed induction generators.",
  "language": "en",
  "tags": [
    "stability",
    "ieee",
    "ieee-task-force",
    "article"
  ],
  "related": [],
  "breaking": false,
  "dates": {
    "created": "2025-03-15",
    "last_modified": "2025-06-20"
  },
  "authors": [
    {
      "name": "Jinning Wang",
      "url": "https://jinningwang.github.io"
    }
  ],
  "content": {
    "sections": [
      {
        "order": 1,
        "id": "definition-in-an-article-by-a-task-force",
        "title": "Definition in an Article by a Task Force",
        "type": "definition",
        "source_keys": [
          "hatziargyriou2021stability"
        ],
        "page": null,
        "body_md": "> In the case of power systems with conventional turbine-generators only, the issue related to [SSR](/wiki/subsynchronous-resonance) is one of torsional interactions and resonance. The Induction Generator Effect (IGE) (or self-excitation) has never been observed in real power systems with conventional synchronous generation. However, it was predicted as early as 2003 that variable speed induction generators used in doubly-fed induction generators (DFIG) would be highly susceptible to IGE self-excitation type SSR. This is due to the fact that a variable speed DFIG generator is an induction generator directly connected to the grid, which makes such an electrical resonance between the **generator and series compensation** possible. In this case, the self-excitation type SSR occurs when the series capacitor forms a resonant circuit, at sub-synchronous frequencies, with the effective inductance of the induction generator, and at these frequencies, the net apparent resistance of the circuit is negative.\n"
      }
    ]
  }
}