Work

Hybrid PV-Battery Storage System for Substation Resilience: Field Deployment and Operational Assessment

Year: 2025

Type: article

Abstract: This paper presents the field deployment and operational evaluation of a hybrid photovoltaic–battery energy storage system (PV–HBESS) designed to enhance the resilience and energy autonomy of auxiliary services in a high-voltage transmission substation. The system integrates photovoltaic generation with two complementary battery chemistries, Lead-Carbon (PbC) and Lithium Iron Phosphate (LFP), managed by a dedicated energy management system (EMS). Installed at the 500 kV Messias substation operated by Eletrobras Chesf in Brazil, the microgrid architecture enables seamless transitions between grid-connected and islanded modes. Real-time field validation tests demonstrate the system’s capability to deliver uninterrupted backup power, perform demand control, execute energy shifting, regulate reactive power (Volt-Var), and smooth PV power fluctuations. Results confirm the effectiveness of the hybrid system in improving power quality and reliability under dynamic grid and solar conditions, making it a replicable solution for critical infrastructure support in transmission networks.

Source: IEEE Access

DOI: 10.1109/access.2025.3642705