A Thai team modeled a PV-battery-grid HEMS with PV-to-battery-to-grid priority and validated it for 30 days on a 5 kW PV/10 kWh battery system. Mean MAPE was 4.2%, with 65.2% PV self-consumption and 37% peak-demand reduction in the tested scenarios.
Key findings
- Reported response was under 200 ms, DC-bus stability within ±2%, THD below 3% and power factor above 0.98. Field validation yielded 4.2% MAPE, 92.4% battery-charging efficiency and 96.1% export-inverter efficiency.
Why this matters globally
A field-checked model helps developers and utilities test prosumer controls before scale-up and is relevant where rooftop solar, batteries and dynamic tariffs are expanding.
Thai researcher contribution
The authors are affiliated with the Provincial Electricity Authority and Rajamangala University of Technology Srivijaya. The source confirms Provincial Electricity Authority, correcting the discovery record's earlier EGAT mapping.
Limitations to consider
Validation covers one system for 30 days, not seasons, battery aging, household diversity or tariff regimes. Scenarios are not randomized experiments, and economic viability requires transparent capital, degradation, operating and payback analysis.