Research on Cluster Control of Large Battery Storage Power Station

doi:10.12204/j.issn.1000-7229.2023.07.004

Abstract

Abstract:

Lithium-ion batteries, the leading new energy storage technology, have been highly valued and developed. The installed capacity of single-battery energy-storage plants (BESP) continues to grow. Given that a BESP is often composed of many small-capacity standardized energy storage system units, achieving efficient control and management of multiple energy storage unit clusters is an essential guarantee for optimizing the overall performance of energy storage power plants. Cluster control technologies of the BESP were investigated in this study. Based on the BESP control functional requirements analysis, a control architecture and network-layering method based on EtherCAT were proposed. Optimizations were made for the cluster control and management, unit control, and controlled equipment layers, and the communication capability of the BESP control system was calculated. Finally, an experimental platform was set up to verify the effectiveness of the proposed architecture and design process. This provides a technical reference for large-scale BESP to contribute to the rapid and reliable operation of various power systems.

Key words: battery energy storage plant, cluster control, EtherCAT, rapid regulation of the power system

CLC Number:

TM73
TK0

LI Yuxuan, WANG Taian, PENG Peng, HU Zhenkai, ZHAO Yuxin, LI Ningning, TANG Xisheng. Research on Cluster Control of Large Battery Storage Power Station[J]. ELECTRIC POWER CONSTRUCTION, 2023, 44(7): 33-40.

Figures/Tables 9

Fig.1 The structure of cluster control platform

Table 1 Comparison of Various Communication Protocols

Fig.2 ESI index structure

Table 2 Calculation of communication data volume

Fig.3 Experiment platform of the communication system

Fig.4 Communication test of one unit with cluster controller

Fig.5 Communication test of nultiply units with cluster controller

Table 3 Communication time delay

Fig.6 Communication test with units failure

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