Four Quadrants Operation Control of High-voltage Transformerless Large-capacity System Integrating Battery Energy Storage and Reactive Power Compensation

被引：0

作者：

Wu X. ^{[1
]}

Liu C. ^{[1
]}

Li R. ^{[1
]}

Jiang X. ^{[2
]}

Yu D. ^{[3
]}

Lu C. ^{[4
]}

Qiu P. ^{[4
]}

Ding C. ^{[4
]}

Cai X. ^{[1
]}

机构：

[1] Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai Jiaotong University, Minhang District, Shanghai

[2] Guangzhou Zhiguang Energy Storage Technology Co., Limited, Guangdong Province, Guangzhou

[3] Contemporary Amperex Technology Co., Limited, Fujian Province, Ningde

[4] State Grid Zhejiang Electric Power Co., Ltd., Electric Power Research Institute, Zhejiang Province, Hangzhou

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2024年 / 44卷 / 04期

关键词：

battery energy; four quadrants; high-voltage transformer-less; power factor; reactive power compensation; zero-sequence voltage;

D O I：

10.13334/j.0258-8013.pcsee.221988

中图分类号：

学科分类号：

摘要：

The high-voltage transformer-less battery energy storage system (BESS) adopts the concept of cascading H-bridge circuits to connect the high voltage power grid. A large number of battery cells are separated equally into numerous clusters at the DC side of H-bridge submodules, and a high degree of modularity features the BESS. Compared with the low-voltage solution, it has obvious advantages such as larger capacity of single-machine, higher efficiency, and faster response speed. If the high-voltage transformer-less BESS also has reactive power compensation capabilities and can realize the four-quadrant operation of the system, greater cost advantages and economic benefits will be obtained. When the system operates at a high proportion of reactive power compensation, the structure of the battery cluster connected to the single-phase H-bridge converter results in that the battery current will reverse in a cycle of twice the fundamental frequency. The battery is charged and discharged with high frequency, which will have a great impact on battery life and battery status monitoring. To solve this problem, this paper proposes a high-proportion reactive power compensation control based on zero-sequence voltage injection and the charged and discharged current with twice the fundamental frequency is removed. Besides, the amplitude and phase of the zero-sequence voltage are optimized to minimize the impact on the battery. ©2024 Chin.Soc.for Elec.Eng.

引用

页码：1406 / 1418

页数：12

共 23 条

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