Hydroelectric power plants operate as critical facilities in the power system, integrating generation, transformation and energy transmission processes in environments of high operational complexity.

The operation of these facilities involves continuous coordination between electromechanical systems, protection systems, process automation and operational telecommunications infrastructure responsible for supervision and control of generating units.

In this context, hydroelectric operation strongly depends on technological infrastructures capable of supporting:

  • supervision and control of generating units
  • operational communication with power system operation centers
  • monitoring of critical equipment
  • integration between generation systems, step-up substations and transmission networks
  • physical security of strategic structures

In addition to systems directly associated with generation, hydroelectric plants often operate in geographically extensive environments with distributed infrastructures, including:

  • dams
  • powerhouses
  • step-up substations
  • spillway structures
  • technical galleries
  • remote operational areas

These characteristics make hydroelectric plants facilities that require robust solutions for automation, operational telecommunications, asset monitoring and critical infrastructure security, ensuring operational reliability and generation continuity.

Scope of Work

A3A Engenharia de Sistemas works in the design and integration of the technological infrastructures that support the operation and supervision of hydroelectric power plants, focusing on operational telecommunications, automation, technological infrastructure and systems integration.

The work covers both generation projects and modernization programs for existing plants.

Main fronts include:

Operational telecommunications

Structuring communication networks used in plant operation and integration with power system operation centers, including:

  • internal and external optical networks
  • interconnection between plant and step-up substations
  • communication infrastructure for automation and supervision

Generation automation and supervision

Structuring the technological infrastructure that supports supervision and control systems for generating units and auxiliary plant systems.

Work associated with:

  • integration with SCADA systems
  • communication infrastructure for control systems
  • industrial networks for process automation

Monitoring of assets and critical structures

Structuring monitoring systems focused on operational reliability of equipment and strategic plant structures, including:

  • monitoring of electromechanical equipment
  • integration of sensors and supervision systems
  • collection and consolidation of operational data

Electrical infrastructure for technological systems

Design and adaptation of the electrical infrastructure that supports digital systems and operational telecommunications in the plant, including:

  • power supply for automation systems
  • power infrastructure for telecommunications
  • protection against surges and lightning discharges

Operational security of facilities

Structuring technological systems aimed at physical protection of strategic plant facilities, including:

  • video monitoring of operational areas
  • monitoring of dams and critical structures
  • access control to restricted areas

Integration with operation centers

Structuring technological architectures that enable remote plant supervision and integration with power system operation centers.

Standards and Compliance

Projects associated with hydroelectric plants involve compliance with a broad set of standards applicable to the power sector, industrial automation and telecommunications infrastructures.

Main normative references include:

Electrical systems and generation

  • IEC 60034 — Rotating electrical machines
  • IEEE C37 — Protection and control of electrical systems
  • IEC 61850 — Communication in electrical automation systems

Electrical infrastructure

  • ABNT NBR 5410 — Low-voltage electrical installations
  • ABNT NBR 14039 — Medium-voltage electrical installations

Protection and grounding

  • ABNT NBR 5419 — Lightning protection
  • IEEE 80 — Grounding in electrical installations

Telecommunications and networks

  • ANSI/TIA-568 — Structured cabling
  • ITU-T — Telecommunications networks
  • IEEE 802 — Data communication networks

Operational safety

  • NR-10 — Safety in electrical installations
  • NR-35 — Work at height