ANÁLISE TÉCNICA DE SUBESTAÇÃO ELÉTRICA: UM ESTUDO COMPARATIVO ENTRE O PROJETO TÉCNICO E A INSTALAÇÃO EXECUTADA

Abstract

The stability of the electrical power supply in healthcare facilities is a fundamental requirement for patient safety and the preservation of high-technology equipment. This case study analyzes the implementation of a 15 kV enclosed substation in a hospital environment, focusing on the sizing, protection, and selectivity of the system. The methodology includes surveying the installed load, specifying the technical specifications of transformers and conductors, and calculating short-circuit levels to define the relay adjustment parameters, according to NBR guidelines. The investigation compares the academically designed technical project with the installation actually implemented, identifying discrepancies between normative rigor and operational reality. The results point to vulnerabilities in the protection system and technical deviations that compromise selective coordination. The conclusions indicate the need for adjustments in the settings of the protection devices and propose improvements in the infrastructure to mitigate the risks of unintended shutdowns, ensuring the reliability and continuity of service essential to hospital activity.