LAPSE:2018.0671
Published Article
LAPSE:2018.0671
An Improved Multi-Timescale Coordinated Control Strategy for Stand-Alone Microgrid with Hybrid Energy Storage System
Jingfeng Chen, Ping Yang, Jiajun Peng, Yuqi Huang, Yaosheng Chen, Zhiji Zeng
September 21, 2018
A scientific and effective coordinated control strategy is crucial to the safe and economic operation of a microgrid (MG). With the continuous improvement of the renewable energy source (RES) penetration rate in MG, the randomness and intermittency of its output lead to the increasing regulation pressure of the conventional controllable units, the increase of the operating risk of MG and the difficulty in improving the operational economy. To solve the mentioned problems and take advantage of hybrid energy storage system (HESS), this study proposes a multi-time scale coordinated control scheme of “day-ahead optimization (DAO) + intraday rolling (IDR) + quasi-real-time correction (QRTC) + real-time coordinated control (RTCC).„ Considering the shortcomings of existing low prediction accuracy of distributed RES and loads, the soft constraints such as unit commitment scheduling errors and load switching scheduling errors are introduced in the intraday rolling model, allowing the correction of day-ahead unit commitment and load switching schedule. In the quasi-real-time coordinated control, an integrated criterion is introduced to decide the adjustment priority of the distributed generations. In the real-time coordinated control, the HESS adopts an improved first order low pass filtering algorithm to adaptively compensate the second-level unbalanced power. Compared with the traditional coordinated control strategy, the proposed improved model has the advantages of good robustness and fast solving speed and provides some guidance for the intelligent solution for stable and economic operation of stand-alone MG with HESS.
Keywords
coordinated control, hybrid energy storage, multi-time scale, stand-alone microgrid
Suggested Citation
Chen J, Yang P, Peng J, Huang Y, Chen Y, Zeng Z. An Improved Multi-Timescale Coordinated Control Strategy for Stand-Alone Microgrid with Hybrid Energy Storage System. (2018). LAPSE:2018.0671
Author Affiliations
Chen J: School of Electric Power, South China University of Technology, Guangzhou 510640, China; Guangdong Key Laboratory of Clean Energy Technology, Guangzhou 511458, China
Yang P: School of Electric Power, South China University of Technology, Guangzhou 510640, China; Guangdong Key Laboratory of Clean Energy Technology, Guangzhou 511458, China; National-Local Joint Engineering Laboratory for Wind Power Control and Integration Techn
Peng J: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Huang Y: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Chen Y: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Zeng Z: School of Electric Power, South China University of Technology, Guangzhou 510640, China
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Journal Name
Energies
Volume
11
Issue
8
Article Number
E2150
Year
2018
Publication Date
2018-08-17
Published Version
ISSN
1996-1073
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PII: en11082150, Publication Type: Journal Article
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LAPSE:2018.0671
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doi:10.3390/en11082150
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Sep 21, 2018
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Calvin Tsay
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