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<p>Maintaining optimal power quality in modern commercial electrical systems is essential for ensuring operational efficiency, reducing costs, and prolonging equipment life span. This study provides a comprehensive comparative analysis of capacitor banks (CB) and active harmonic filters (AHFs) for power quality enhancement at a commercial site in Dubai, considering the influence of distributed energy resources (DERs) and diverse load profiles. Capacitor banks are traditionally favored for reactive power compensation and power factor improvement due to their simplicity and cost-effectiveness. However, their limitations in harmonic distortion mitigation are evident, especially in environments with significant nonlinear loads. Conversely, AHFs offer dynamic compensation of harmonic frequencies through advanced power electronics, significantly enhancing power quality. This research introduces a hybrid model that integrates CBs and AHFs, leveraging the strengths of both technologies to provide a comprehensive solution for power factor correction and harmonic mitigation. Detailed simulation case studies demonstrate the effectiveness of each approach across three scenarios: (a) CB only, (b) AHF only, and (c) combined CB and AHF. The findings reveal that while CBs efficiently improve power factors in linear load scenarios, AHFs are crucial for harmonic compensation in nonlinear load environments. The combined system with detuned CBs and AHFs offers optimal power quality enhancement, achieving total harmonic distortion (THD) reduction below 1% and maintaining a high power factor. These insights provide practical guidelines for selecting the most appropriate power quality solution tailored to specific operational conditions, particularly in DER-integrated commercial systems.</p>

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Assessment of capacitor banks and active harmonic filter on power quality improvement for commercial applications

  • 期刊论文

  • 发表日期：

    2025年11月24日

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  • Appala Naidu Talada,
  • Kannan Thirugnanam,
  • Sajan K. Sadanandan,
  • Tareg Ghaoud

摘要

Maintaining optimal power quality in modern commercial electrical systems is essential for ensuring operational efficiency, reducing costs, and prolonging equipment life span. This study provides a comprehensive comparative analysis of capacitor banks (CB) and active harmonic filters (AHFs) for power quality enhancement at a commercial site in Dubai, considering the influence of distributed energy resources (DERs) and diverse load profiles. Capacitor banks are traditionally favored for reactive power compensation and power factor improvement due to their simplicity and cost-effectiveness. However, their limitations in harmonic distortion mitigation are evident, especially in environments with significant nonlinear loads. Conversely, AHFs offer dynamic compensation of harmonic frequencies through advanced power electronics, significantly enhancing power quality. This research introduces a hybrid model that integrates CBs and AHFs, leveraging the strengths of both technologies to provide a comprehensive solution for power factor correction and harmonic mitigation. Detailed simulation case studies demonstrate the effectiveness of each approach across three scenarios: (a) CB only, (b) AHF only, and (c) combined CB and AHF. The findings reveal that while CBs efficiently improve power factors in linear load scenarios, AHFs are crucial for harmonic compensation in nonlinear load environments. The combined system with detuned CBs and AHFs offers optimal power quality enhancement, achieving total harmonic distortion (THD) reduction below 1% and maintaining a high power factor. These insights provide practical guidelines for selecting the most appropriate power quality solution tailored to specific operational conditions, particularly in DER-integrated commercial systems.