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Additional Compound Damping Control to Suppress Low-Frequency Oscillations in a Photovoltaic Plant with a Hybrid Energy Storage System

Author

Listed:
  • Kanglin Dai

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

  • Wei Xiong

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

  • Xufeng Yuan

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

  • Huajun Zheng

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

  • Qihui Feng

    (Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang 550002, China)

  • Yutao Xu

    (Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang 550002, China)

  • Yongxiang Cai

    (Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang 550002, China)

  • Dan Guo

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

Abstract

The use of the conventional dual closed-loop control strategy by photovoltaic (PV) plants with grid-connected inverters may weaken the damping of a power system, which may aggravate low-frequency oscillations (LFOs). This influence will become more severe as the penetration of PV plants increases. Therefore, it is necessary to incorporate damping controls into PV plants to suppress LFOs. This paper proposed an additional compound damping control (ACDC) system that combines additional damping control (ADC) for the inverter with ADC-based dynamic power compensation control (DPCC), allowing hybrid energy storage systems (HESSs) to suppress LFOs. First, the feasibility of suppressing low-frequency oscillations in PV plants is demonstrated by the torque method and a small signal model. Then, an additional damping controller is added to the active power control link of the PV inverter to enhance the damping abilities of the system. However, given that the damping performance of PV plants with only ADC is limited by the compensated power, PV plants require devices that can rapidly compensate for the damping power. Therefore, we added the HESS to the DC bus and proposed DPCC. Finally, a three-machine nine-node system for a PV plant was modeled and simulated in the PSCAD platform. The simulation results showed that the proposed control strategy could provide effective damping for interarea oscillation.

Suggested Citation

  • Kanglin Dai & Wei Xiong & Xufeng Yuan & Huajun Zheng & Qihui Feng & Yutao Xu & Yongxiang Cai & Dan Guo, 2022. "Additional Compound Damping Control to Suppress Low-Frequency Oscillations in a Photovoltaic Plant with a Hybrid Energy Storage System," Energies, MDPI, vol. 15(23), pages 1-13, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:9044-:d:988116
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    References listed on IDEAS

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    1. Zhang, Xinran & Lu, Chao & Liu, Shichao & Wang, Xiaoyu, 2016. "A review on wide-area damping control to restrain inter-area low frequency oscillation for large-scale power systems with increasing renewable generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 57(C), pages 45-58.
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