Technical Evaluation of Advanced Strategies for Power Flow Redirection in the Transmission Infrastructure of the Paraguayan National Interconnected System (SINP)

Evaluación Técnica de Estrategias Avanzadas para el Redireccionamiento de Flujo en la Infraestructura de Transmisión del Sistema Interconectado Nacional Paraguayo (SINP)

This work explores various solutions to improve power flow distribution within Paraguay’s Transmission Network, considering the in-creasing demand levels and congestion issues observed in key transmission corridors of the national grid. The study focuses particu-larly on identifying and evaluating the implementation of versatile and flexible technologies to address the significant challenges involved in optimizing the existing electrical infrastructure.
Four main alternatives are analyzed. The first involves the implementation of series compensation on the 500 kV line—a technology that enhances transmission capacity and system stability by adjusting the line’s reactance, thereby contributing to a more balanced power flow distribution. The second alternative evaluated is the installation of phase-shifting transformers at specific locations within the system, enabling the modification of phase angles between lines and thus facilitating power flow control across different areas of the grid.
Finally, the study considers the insertion of modular static synchronous series compensators (SSSCs) aimed at efficiently redirecting power flows. The results of the comparative analysis show that while all three alternatives contribute to improved system operation, modular SSSCs stand out as the most effective option. This technology offers superior advantages in terms of dynamic stability, oper-ational flexibility, and the ability to redirect power flows rapidly and efficiently, significantly alleviating line congestion and enhancing overall system reliability. Furthermore, SSSCs prove to be more adaptable to future expansions and demand shifts, positioning them as the most suitable alternative for the Paraguayan National Interconnected System (SINP).

En este trabajo se exploran diversas soluciones para mejorar la distribución de flujo de la Red de Transmisión de Paraguay, te-niendo en consideración el creciente nivel de demanda y la congestión de flujo en corredores importantes de la red eléctrica nacional y con un enfoque particular en la búsqueda de implementación de tecnologías versátiles y flexibles para enfrentar los enormes desafíos de optimización de la red eléctrica existente.