Diseño en red anillo mejorando la confiabilidad y calidad de voltaje en el sistema Cerecita Playas

Abstract

In Ecuador, many cities and provinces in the coastal region lack regional interconnections in remote areas outside urban centers, leading to insufficient power supply to other parts of the country. The distribution company CNEL operates with a radial system at the Cerecita Substation (S/E Cerecita), which functions at voltage levels below those established by voltage regulation standards. This results in deficient service, worsening the current situation in the region and causing multiple interruptions and failures in energy distribution to consumers through its four feeders. In 2024, anomalies have been identified that lead to annual interruptions at specific points in the network, causing total disconnections in the trunk lines of the feeders, whether single-phase or three-phase. A ring network design is proposed, using CYMDIST software to connect the "Cerecita" substation with the "Chongón" substation (Playas–Guayaquil). This approach aims to improve the system's voltage quality by providing alternate routes and analyzing its behavior through load flow studies, reducing voltage drops and improving other network parameters. CYMDIST will be utilized to simulate both the current network and the proposed ring network, enabling the optimization of parameters such as voltage drops, power losses, and load transfer capacity. Additionally, the technical advantages of the ring network will be detailed, including the repowering of the Cerecita Substation with appropriate conductors and adjustments to the TAP of the 10/12.5 MVA transformer, as well as the incorporation of capacitor banks as an alternative to comply with voltage quality and service standards established by ARCONEL Regulations N° 004/01. Finally, the results obtained from both topologies will be compared, demonstrating the improvements achieved through result tables.