High Voltage Transmission Tower

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Santo Antônio Hydroelectric Plant
Location: Madeira River, near Porto Velho, Rondônia.
Installed Capacity: About 3,568 MW.
Type: Run-of-river plant, with low reservoir formation.
Purpose: Mainly to meet the growing energy demand of the country, especially in the Southeast and Central-West regions.

Direct Current Transmission System (HVDC) – Porto Velho → Araraquara II
This system is known as the ±600 kV bipole transmission line Porto Velho – Araraquara II, and represents one of Brazil’s main high-voltage direct current (HVDC) lines.
Technical Characteristics:
Technology: HVDC (High Voltage Direct Current).
Voltage: ±600 kV (positive and negative relative to ground).
Length: Approximately 3,450 km.
Transmission Capacity: Around 3,150 MW per bipole.
Project: Part of the Madeira system, responsible for transmitting energy from the Santo Antônio and Jirau plants.
Start of Operation: Initial tests and commercial operation began around 2013 to 2014.

Converter Substations
Porto Velho Substation (RO): Converts AC (alternating current) energy to DC (direct current), enabling long-distance transmission with lower losses.
Araraquara II Substation (SP): Performs the reverse process — converts DC to AC, integrating it into the National Interconnected System (SIN).