Innovation and Challenges in the Implementation of Series FACTS in 500kV Transmission Lines of the Peruvian System

“500 kV Huánuco–Tocache–Celendín–Trujillo” and “500 kV Celendín–Piura” projects, awarded to the Yapay Electric Consortium. It describes the selection and integration process of a Distributed Power Flow Controller (DPFC), based on modular Voltage Source Converters

(VSC), capable of continuously regulating in a capacitive and inductive region between 0% and 50% of the series reactance of the lines, without inducing subsynchronous resonance or compromising torsional stability. With ratings up to 492 Mvar, these devices set a global milestone by operating at 500 kV, at more than 3,000 meters above sea level, and under extreme seismic and environmental conditions. The paper presents the technology validation process and supplier certification, the development of simulation models, and the engineering management with an emerging technology partner in the region. The results demonstrate that the adopted solution meets technical and regulatory requirements, enhances system stability, and establishes a solid foundation for future applications of advanced technologies across the

Andean region.