HB3-C generator switchgear for Río Grande hydroelectric complex, Córdoba - Argentina
HB3-C generator switchgear for Río Grande hydroelectric complex, Córdoba - Argentina
Power Utilities
Empresa Provincial de Energía de Córdoba (EPEC)
EPEC aimed to modernize its aging MV generator systems (BBC DB20 switchgear) to enhance performance and reliability. A key requirement was a compact, tailored, and SF6-free solution due to the plant's underground location and environmental considerations.
Siemens delivered a comprehensive retrofit with state-of-the-art vacuum switching technology:
Four Siemens HB3-C compact circuit breaker modules replaced existing generator circuit breakers. These units feature 106 kA breaking capability, 24 kV rated voltage, and 10,000 A rated operating current.
Two HB3-C units were integrated into new VB1 switchgears for the converter systems.
The solution included customized adaptation for seamless, one-to-one integration with existing busbars and rail systems.
Rapid installation: Each module, including dismantling, required only four days for installation and commissioning.
The system is designed for indoor application with busbar connections on generator and transformer sides.
Working
with Siemens was an extremely positive experience, both with the
teams from Argentina and Germany, as they were able to provide
solutions to all the plant requirements for
installation assembly and commissioning.
Javier
Bordino, Head of the Río Grande Power Plant (EPEC)
EPEC received a customized, future-proof solution:
Enhanced environmental performance: SF6-free vacuum technology minimizes environmental impact and extends installation lifespan, crucial for the underground plant.
State-of-the-art technology: High breaking capacity vacuum interrupters provide improved reliability and performance.
Seamless & rapid integration: The compact HB3-C design allowed for precise fitting and quick installation, minimizing downtime.
Successful project execution & collaboration: Project deadlines were met, and close collaboration between EPEC, Siemens Germany, and Siemens Argentina ensured a smooth process.
The Rio Grande pumped storage hydroelectric power plant, located 130 km southeast of Córdoba, Argentina, is South America's largest with 750 MW capacity. Operated by EPEC for over 38 years, it functions in energy generation, pumped storage, and synchronous condenser modes. The plant is situated 200 meters underground in a cavern.
