{
  "$schema": "https://ps-wiki.github.io/schema/v1/term.schema.json",
  "id": "oscillation",
  "title": "Oscillation",
  "description": "A repetitive motion that can be either undamped, positively damped, or negatively damped.",
  "language": "en",
  "tags": [
    "event",
    "oscillation"
  ],
  "related": [
    "resonance-stability",
    "subsynchronous-resonance",
    "subsynchronous-oscillation"
  ],
  "breaking": false,
  "dates": {
    "created": "2025-03-15",
    "last_modified": "2026-01-18"
  },
  "authors": [
    {
      "name": "Jinning Wang",
      "url": "https://jinningwang.github.io"
    }
  ],
  "content": {
    "sections": [
      {
        "order": 1,
        "id": "definition-by-powerworld",
        "title": "Definition by PowerWorld",
        "type": "definition",
        "source_keys": [
          "powerworld2020oscillations"
        ],
        "page": null,
        "body_md": "> An oscillation is just a repetitive motion that can be either undamped, positively damped (decaying with time), or negatively damped (growing with time).\n>\n> Types of oscillations include:\n>\n> - Transients: Usually high frequency and highly damped\n> - Local plant: Usually from 1 to 5 Hz\n> - Inter-area oscillations: From 0.15 to 1 Hz\n> - Slower dynamics: Such as AGC, less than 0.15 Hz\n> - Subsynchronous resonance: 10 to 50 Hz (less than synchronous)\n\n<!-- prettier-ignore-start -->\nIn the context of power systems, Oscillation is an umbrella term that includes resonance.\n{: .block-tip }\n<!-- prettier-ignore-end -->\n"
      }
    ]
  }
}