A Novel Frequency Restoring Strategy of Hydro-PV Hybrid Microgrid

Feng Wei, Sun Kai, Yajuan Guan, Yibo Wang

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

3 Citations (Scopus)

Abstract

The conventional PV systems based on the voltage inverters only inject dispatched power to the utility grid when they work at a grid-connected mode in the hydro-PV hybrid microgrid. Due to the droop method employed for load sharing between generators, as well as the enormous inertia of system. The existence of frequency steady-state error and the slow active power/frequency dynamic response are inevitable. Therefore, a novel frequency restoring strategy for the hydro-PV hybrid microgrid based on the improved hierarchical control of PV systems is proposed in this paper. The output active power of PV systems is controlled by an extra frequency restoring controller resided in the tertiary control level. The frequency steady-state error is eliminated through regulating and rebalancing the power flow between the hydropower and the PV system. The proposed strategy has verified through simulations and experiments.
Original languageEnglish
Title of host publicationProceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14)
Number of pages6
PublisherIEEE Press
Publication dateNov 2014
Pages348 - 353
ISBN (Print)978-1-4799-6768-1
DOIs
Publication statusPublished - Nov 2014
EventIEEE International Power Electronics and Application Conference and Exposition 2014 - Shanghai, China
Duration: 5 Nov 20148 Nov 2014

Conference

ConferenceIEEE International Power Electronics and Application Conference and Exposition 2014
CountryChina
CityShanghai
Period05/11/201408/11/2014

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Keywords

  • Hybrid microgrid
  • Hydropower
  • PV
  • Frequency restoring
  • Hierarchical control

Cite this

Wei, F., Kai, S., Guan, Y., & Wang, Y. (2014). A Novel Frequency Restoring Strategy of Hydro-PV Hybrid Microgrid. In Proceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) (pp. 348 - 353 ). IEEE Press. https://doi.org/10.1109/PEAC.2014.7037880