Reactive Power Injection Strategies for Single-Phase Photovoltaic Systems Considering Grid Requirements

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Abstract

As the development and installation of photovoltaic (PV) systems are still growing at an exceptionally rapid pace, relevant grid integration policies are going to change consequently in order to accept more PV systems in the grid. The next generation PV systems will play an even more active role like what the conventional power plants do today in the grid regulation participation. Requirements of ancillary services like Low-Voltage Ride-Through (LVRT) associated with reactive current injection and voltage support through reactive power control, have been in effectiveness in some countries. Those advanced features can be provided by next-generation PV systems, and will be enhanced in the future to ensure an even efficient and reliable utilization of PV systems. In the light of this, Reactive Power Injection (RPI) strategies for single-phase PV systems are explored in this paper. The RPI possibilities are: a) constant average active power control, b) constant active current control, c) constant peak current control and d) thermal optimized control strategy. All those strategies comply with the currently active grid codes, but are with different objectives. The thermal optimized control strategy is demonstrated on a 3 kW single-phase PV system by simulations. The other three RPI strategies are verified experimentally on a 1 kW singe-phase system in LVRT operation mode. Those results show the effectiveness and feasibilities of the proposed strategies with reactive power control during LVRT operation. The design and implementation considerations for the characterized strategies are also discussed.
Original languageEnglish
Title of host publicationProceedings of the 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
Number of pages8
PublisherIEEE Press
Publication dateMar 2014
Pages371-378
ISBN (Print)9781479923250
ISBN (Electronic)9781479923267
DOIs
Publication statusPublished - Mar 2014
Event29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014 - Fort Worth, TX, United States
Duration: 16 Mar 201420 Mar 2014

Conference

Conference29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
CountryUnited States
CityFort Worth, TX
Period16/03/201420/03/2014
SeriesI E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
ISSN1048-2334

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  • Activities

    • 1 Conference presentations

    29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014

    Huai Wang (Speaker)

    16 Mar 201420 Mar 2014

    Activity: Talks and presentationsConference presentations

    Cite this

    Yang, Y., Wang, H., & Blaabjerg, F. (2014). Reactive Power Injection Strategies for Single-Phase Photovoltaic Systems Considering Grid Requirements. In Proceedings of the 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014 (pp. 371-378). IEEE Press. I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings https://doi.org/10.1109/APEC.2014.6803335