Hierarchical Distributed Coordinated Control for Battery Energy Storage Systems Participating in Frequency Regulation

Bingqing Yu, Qingquan Lv, Zhenzhen Zhang and Haiying Dong ()
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Bingqing Yu: School of Automation & Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Qingquan Lv: Electric Power Scientific Research Institute of State Grid Gansu Electric Power Company, Lanzhou 730070, China
Zhenzhen Zhang: Electric Power Scientific Research Institute of State Grid Gansu Electric Power Company, Lanzhou 730070, China
Haiying Dong: School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Energies, 2022, vol. 15, issue 19, 1-16

Abstract: At present, battery energy storage systems (BESS) have become an important resource for improving the frequency control performance of power grids under the situation of high penetration rates of new energy. Aiming at the problem that the existing control strategy is not sufficient for allocating the frequency regulation power instructions, a hierarchical distributed coordinated control strategy for BESS to participate in the automatic generation control (AGC) of a regional power grid is proposed. At the upper layer, the state of charge (SOC) of BESS and the technical characteristics of different frequency regulation power sources are comprehensively considered to complete the coordinated distribution of frequency regulation commands between BESS and traditional generators; at the lower layer, for the purpose of optimizing the economic operation of the regional power grid, the distributed consistency algorithm is used to control the distributed BESS in order to realize the fine management of power output of BESS. The simulation results indicate that this control strategy can give full play to the technical characteristics of different frequency power sources and improve the frequency regulation of the power grid. The excessive power consumption of BESS is successfully avoided, and the continuous operation of BESS is realized.

Keywords: hierarchical distributed control; distributed consistency algorithm; secondary frequency control; the management of SOC (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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