NDLI: Two-stage optimal MPC for hybrid energy storage operation to enable smooth wind power integration

Content Provider	IET Digital Library
Author	Guo, Tingting Zhu, Yuwei Liu, Youbo Gu, Chenghong Liu, Junyong
Abstract	The large-scale penetration of wind generation imposes challenges on the security of power system operation due to the intermittency and stochastic volatility. Hybrid energy storage system (HESS), which combines battery banks and super-capacitors, is applied in this study to smooth wind fluctuations to facilitate the grid-friendly integration. To optimally schedule HESS charge/discharge in an online receding horizon, a novel two-stage model predictive control (MPC) scheme is proposed. The first stage determines the initial charge/discharge profiles for battery banks at a large time scale, while the second stage quantifies the optimal amendment to update them and determines the operation strategies for super-capacitors at a smaller time scale. According to the rolling update of wind forecasting, the two-stage model is successively solved in a receding horizon to generate the most appropriate operation strategies. The proposed method also optimises the state of charge of HESS, yielding sufficient margin to cope with wind uncertainties, making HESS operation more reliable and robust. The case study demonstrates that the proposed model can enable an effective smoothing effect on wind generation volatility by fully utilising energy storage systems of various distinct characteristics, providing a powerful tool to facilitate the smooth integration in a large scale in practice.
Starting Page	2477
Ending Page	2486
Page Count	10
ISSN	17521416
Volume Number	14
e-ISSN	17521424
Issue Number	Issue 13, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/14/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.1178
Journal	IET Renewable Power Generation
Publisher Date	2020-07-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Appropriate Operation Strategy Battery Banks Charge-discharge Profiles Control of Electric Power System Effective Smoothing Effect Energy Storage Energy Storage System Grid-friendly Integration HESS Charge-discharge HESS Operation Hybrid Energy Storage Operation Hybrid Energy Storage System Intermittency Volatility Large-scale Penetration Online Receding Horizon Optimal Amendment Optimal Control Optimisation Optimisation Technique Power Generation Control Power System Control Power System Economics Power System Managemen Power System Operation Power System Operation Security Predictive Control Rolling Update Secondary Cell Smooth Wind Fluctuations Smooth Wind Power Integration Stochastic Volatility Super-capacitors Two-stage Model Predictive Control Scheme Two-stage Optimal MPC Wind Generation Wind Generation Volatility Wind Power Wind Power Forecasting Wind Power Plant Wind Uncertainties
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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