{
  "language": "en",
  "interfaceLanguage": "ar",
  "url": "https://voltformer.com/ar/news/eletrobras-furnas-commissions-500kv-digital-substation-serra-da-mesa-brazil",
  "slug": "eletrobras-furnas-commissions-500kv-digital-substation-serra-da-mesa-brazil",
  "category": "transmission-substations",
  "publishDate": "2026-09-26",
  "sourceName": "Eletrobras Furnas & ONS Brasil",
  "sourceUrl": "https://www.eletrobras.com/pt/furnas/noticias/subestacao-digital-500kv-serra-da-mesa-inauguracao",
  "readingTimeMinutes": 5,
  "tags": [
    "Eletrobras",
    "Furnas",
    "500 kV Substation",
    "Digital Substation",
    "IEC 61850",
    "Vegetable Ester",
    "Shunt Reactor",
    "Brazil",
    "ONS"
  ],
  "content": {
    "title": "Eletrobras Furnas Commissions 500 kV Eco-Friendly Digital Substation at Serra da Mesa",
    "summary": "Brazilian utility giant Eletrobras Furnas has energized a state-of-the-art 500 kV digital substation expansion at the Serra da Mesa hydroelectric hub in Goiás, featuring vegetable ester-immersed shunt reactors, non-SF6 vacuum breakers, and a full optical Process Bus network complying with IEC 61850-9-2.",
    "sections": [
      {
        "heading": "Modernizing Brazil’s Central Hydro and Solar Transmission Crossroads",
        "paragraphs": [
          "The Serra da Mesa complex in central Brazil serves as a crucial power transmission nexus, interconnecting the North-South transmission intertie with central industrial load centers. To accommodate surging gigawatt-scale solar generation in Goiás and Minas Gerais, Eletrobras executed a comprehensive high-voltage digital modernization.",
          "The project replaces legacy electro-mechanical switchyards with an advanced digital substation topology that eliminates over 80% of copper control cabling, replacing it with resilient redundant fiber-optic rings operating under the High-availability Seamless Redundancy (HSR) protocol."
        ]
      },
      {
        "heading": "Vegetable Ester Shunt Reactors and Vacuum Interrupters",
        "paragraphs": [
          "Setting an environmental precedent for tropical grid infrastructure, the newly installed 500 kV 100 Mvar variable shunt reactors (VSR) are filled with natural vegetable-based ester dielectric fluids derived from sustainable crops. Natural ester fluids offer a fire point above 315°C and complete biodegradability, protecting surrounding river ecosystems.",
          "The 500 kV switchgear incorporates high-voltage vacuum circuit breakers utilizing clean dry air insulation, eliminating greenhouse gas SF6 emissions across the facility."
        ]
      },
      {
        "heading": "Real-Time Synchronized Phasor Teleprotection",
        "paragraphs": [
          "Optical instrument transformers (OCTs/OVTs) measure current and voltage waveforms with microsecond timestamping, transmitting Sampled Values directly to digital protection relays.",
          "National Grid Operator ONS commended the project as a technical blueprint for the Brazilian National Interconnected System (SIN), significantly bolstering transmission reliability across the Cerrado energy corridor."
        ]
      }
    ]
  },
  "companies": []
}