Hierarchical Coordinated Control of Distributed Generators and Active Power Filters to Enhance Power Quality of Microgrids

Mehdi Savaghebi, Mohammad M. Hashempour, Josep M. Guerrero

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

8 Citations (Scopus)
409 Downloads (Pure)

Abstract

This paper addresses the coordinated control of distributed generators (DGs) inverters and active power filters (APFs) to compensate voltage harmonics in microgrids. For this, a hierarchical control system is proposed to mitigate voltage harmonic distortion. The hierarchical control structure includes two control levels: primary control and secondary control. Primary control consists of power controllers, selective virtual impedance loops and proportional-resonant (PR) voltage/current controllers. Secondary control manages the compensation of voltage harmonic distortion of sensitive load bus (SLB). Compensation of SLB harmonics by control of DGs may cause excessive voltage harmonics at the terminal of one or more of DGs interface inverters and/or overloading of the inverters. After occurrence of each of these cases, active power filter (APF) participates in harmonic compensation and consequently the compensation efforts of DGs decrease to avoid excessive harmonics or loading of DGs’ inverters. Effectiveness of the proposed control scheme is demonstrated through simulation studies.
Original languageEnglish
Title of host publicationProceedings of the 55th IEEE Int. Scientific Conference of Riga Technical University on Power and Elec. Eng. (RTUCON)
Number of pages6
PublisherIEEE Press
Publication date2014
Pages259 - 264
DOIs
Publication statusPublished - 2014
Event55th Internatial Scientific Conference of Riga Technical University on Power and Electrical Engineering (RTUCON) - Riga, Latvia
Duration: 14 Oct 201417 Oct 2014

Conference

Conference55th Internatial Scientific Conference of Riga Technical University on Power and Electrical Engineering (RTUCON)
CountryLatvia
CityRiga
Period14/10/201417/10/2014
SeriesIEEE Proceedings

Keywords

  • Active power filter
  • Hierarchical control
  • Microgrid
  • Power quality
  • Selective virtual impedance
  • Voltage harmonic distortion

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    Savaghebi, M., Hashempour, M. M., & Guerrero, J. M. (2014). Hierarchical Coordinated Control of Distributed Generators and Active Power Filters to Enhance Power Quality of Microgrids. In Proceedings of the 55th IEEE Int. Scientific Conference of Riga Technical University on Power and Elec. Eng. (RTUCON) (pp. 259 - 264 ). IEEE Press. IEEE Proceedings https://doi.org/10.1109/RTUCON.2014.6998222