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Modeling and Coordinated Control Strategy of Large Scale Grid-Connected Wind/Photovoltaic/Energy Storage Hybrid Energy Conversion System

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  • Lingguo Kong
  • Guowei Cai
  • Sidney Xue
  • Shaohua Li

Abstract

An AC-linked large scale wind/photovoltaic (PV)/energy storage (ES) hybrid energy conversion system for grid-connected application was proposed in this paper. Wind energy conversion system (WECS) and PV generation system are the primary power sources of the hybrid system. The ES system, including battery and fuel cell (FC), is used as a backup and a power regulation unit to ensure continuous power supply and to take care of the intermittent nature of wind and photovoltaic resources. Static synchronous compensator (STATCOM) is employed to support the AC-linked bus voltage and improve low voltage ride through (LVRT) capability of the proposed system. An overall power coordinated control strategy is designed to manage real-power and reactive-power flows among the different energy sources, the storage unit, and the STATCOM system in the hybrid system. A simulation case study carried out on Western System Coordinating Council (WSCC) 3-machine 9-bus test system for the large scale hybrid energy conversion system has been developed using the DIgSILENT/Power Factory software platform. The hybrid system performance under different scenarios has been verified by simulation studies using practical load demand profiles and real weather data.

Suggested Citation

  • Lingguo Kong & Guowei Cai & Sidney Xue & Shaohua Li, 2015. "Modeling and Coordinated Control Strategy of Large Scale Grid-Connected Wind/Photovoltaic/Energy Storage Hybrid Energy Conversion System," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-14, January.
    • Handle: RePEc:hin:jnlmpe:682321
    DOI: 10.1155/2015/682321
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    Cited by:

    1. Zhao, Junjie & Luo, Xiaobing & Tu, Zhengkai & Hwa Chan, Siew, 2023. "A novel CCHP system based on a closed PEMEC-PEMFC loop with water self-supply," Applied Energy, Elsevier, vol. 338(C).

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