Improved Control Strategy for Hybrid Energy Storage Considering SOC of SMES and Battery in Isolated Microgrid
ID:28 View Protection:ATTENDEE Updated Time:2022-09-26 21:34:38 Hits:306 Oral Presentation

Start Time:2022-11-04 11:00(Asia/Shanghai)


Session:S Power System and Automation » OS5Oral Session 5

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The Energy storage technology is the key to solve the randomness and volatility of wind and photovoltaic power generation in microgrids, but single energy storage has great limitations in performance. In addition, the energy storage system may be in overcharged and deep-discharged states if the power fluctuates greatly, which reduces the performance of the energy storage system and cannot guarantee the stability of the system. In this regard, this paper improves the charge-discharge protection strategy with quadratic adjustment function based on the state-of-charge (SOC) of the energy storage system and applies it to the HESS (hybrid energy storage system) consisting of SMES (superconducting magnetic energy storage) and BES (battery energy storage). At the same time, the DC/AC converter adopts the V/f control method to realize the stable operation of the island system. The simulation results show that the SMES can quickly compensate for the power shortage before the full response of the BES, which indicates that the HESS has compensatory and suppressive effects on power fluctuations obviously. The voltage fluctuation of DC bus is suppressed and prolonged when the energy storage system enters the overcharge or deep-discharge state.
charge-discharge protection strategy, hybrid energy storage system (HESS), superconducting magnetic energy storage (SMES), state-of-charge (SOC), V/f control
Lecheng Wang
North China Electric Power University

Submission Author
Lecheng Wang North China Electric Power University
Yinshun Wang North China Electric Power University
Jianhong Wang North China Electric Power University
Wei Pi North China Electric Power University
Zhenghao Huang North China Electric Power University
Xindan Zhang North China Electric Power University
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    Nov 05


  • Aug 01 2022

    Draft paper submission deadline

  • Nov 05 2022

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