Maximizing solar generator output through reactive power management: A case study from rural India

Abstract

Decentralized solar generation plays acritical role in enhancing energy access and grid resilience. While conventional solar inverters operate at unity power factor, delivering only active power, this study examines the underexplored potential of using these inverters for reactive power support. Specifically, it investigates how decentralized reactive power management (DRPM) affects active energy injection, especially under low-voltage conditions that often lead to feeder losses and inverter disconnections. By implementing an inverter-based Volt/VAr control strategy, the study quantifies both the reduction in system losses and the increase in active energy delivery. A case study on a 1 MW solar generator at Raipura, India, demonstrates that DRPM not only mitigates curtailment but also yields a 16.69 % increase in economic returns. These findings establish the technical and financial viability of treating reactive power as an ancillary service in solar-dominant distribution networks.