Preventing Early Failures Through Supply–Demand Quality Matching in Remote Systems

Sustainable Development Goal 7 aims to ensure universal access to affordable and reliable energy, including for remote communities beyond the main grid. Microgrids offer a promising solution but sustaining them long term remains challenging. One contributing factor to early failures is poor conducted electromagnetic compatibility, i.e., power quality (PQ). Although PQ issues in remote microgrids are similar to those in large grids, their effects are often more severe due to high source impedance, a substantial proportion of nonlinear loads, less robust equipment, limited skilled operators, and harsh environment. Conventional PQ mitigation (e.g., filters, oversizing, power factor correction) are often impractical for these resource-constrained areas, hence requiring a more pragmatic approach. Consequently, understanding PQ from both supply and demand sides is critical in this context, as cost-efficient solutions can only be identified by assessing both sides together. Measurements highlight the necessity of real-time PQ monitoring at multiple points in the system, while simulations show that adjusting system impedance and load composition can improve PQ. These findings show the importance of coordinated action among system owners, operators, appliance manufacturers, and users in managing PQ in resource-constrained environment.