Sustainable modernization for reliable hydro power – Río Grande HPP, Córdoba – Argentina
Sustainable modernization for reliable hydro power – Río Grande HPP, 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.
Four set HB3-C compact circuit breaker modules for the generator circuit breakers: featuring a rated voltage of 24 kV, a rated current of 10,000 A, and a breaking capability of 106 kA.
Two VB1 switchgears for the converter systems: integrating 3AH36 VGCB modules, with a rated voltage of 24 kV, a rated current of 630 A, and a breaking capability of 106 kA.
Customized adaptation: Both solutions ensured one-to-one adaptation to existing busbars by means of customized adapters. The HB3-C modules also included a supporting structure with a rolling system matching existing GCB rails system.
Rapid installation: Each module, including dismantling, required only four days for installation and commissioning, minimizing plant downtime.
All delivered systems are designed for indoor application with busbar connections on both 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 for all the plant's requirements regarding 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: Vacuum interrupters with high breaking capacity 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.
