A Comprehensive Review of Harmonic Mitigation Strategies in Power Distribution Systems and Microgrids with Inverter-Based Generation

Power converters in the interfaces of renewable energy systems, energy storage, and non-linear loads introduces power quality problems and harmonic distortions in power distribution networks and microgrids. Harmonic distortion must be mitigated at its earliest as it can cause thermal stress in various grid components, leading to reduced life expectancy, deterioration of their performance, and even fire hazards. This paper critically compares different control strategies for harmonic mitigation in distribution systems and microgrids with inverter-based generation. Comparison is done in terms of their harmonic mitigation capacity, applications, performance, complexity, and robustness.