TITLE:
PCC Stability of a 12 MW PV Plant Coupled with a 45 MWh LFP Storage System Serving a 17.5 MVA Industrial Load
AUTHORS:
Rodrigue Armel Patrick Okemba, Alfred Raoul Missetete, Rostand Martialy Davy Loembe Souamy, Amos Omboua Eyandzi
KEYWORDS:
Battery Energy Storage System (BESS), Coordinated Energy Management, Photovoltaic System, Point of Common Coupling (PCC), Power Control, Voltage Regulation
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.14 No.9,
September
23,
2026
ABSTRACT: The increasing penetration of photovoltaic generation in industrial power systems introduces significant challenges related to power imbalance, voltage regulation, and transient stability at the point of common coupling (PCC). This paper proposes a Coordinated Energy Management and Power Control Strategy (CEMPCS) for a grid-connected PV-BESS system. The proposed strategy coordinates active- and reactive-power exchanges among the PV plant, battery energy storage system (BESS), industrial load, and utility grid while considering BESS state-of-charge and converter operating constraints. A dynamic model of the complete system is developed in the synchronous dq reference frame, together with cascaded voltage-current control and supervisory power allocation. The CEMPCS is evaluated under four operating disturbances: irradiance variation, industrial load step, induction-motor starting, and grid-voltage reduction. Comparative assessment against conventional control focuses on PCC voltage deviation, active/reactive power imbalance, BESS response, and transient recovery. The results demonstrate the capability of the proposed coordination strategy to improve PCC voltage regulation and dynamic power balancing while providing faster transient support under the investigated disturbances.