| 引用本文: | 李颜鑫,付强,肖先勇.电池储能并网系统小干扰稳定性研究综述[J].电力自动化设备,2023,43(9):125-137. |
| LI Yanxin,FU Qiang,XIAO Xianyong.Review of research on small-signal stability of grid-connected battery energy storage system[J].Electric Power Automation Equipment,2023,43(9):125-137. |
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| 摘要: |
| 为了明确电池储能规模化并网系统的潜在失稳风险，从交流、直流2个角度综述了电池储能并网导致的稳定性问题及机理，明确了电池储能与光伏、风机等新能源电力电子设备之间的差异性，指出了现有成果在应对电池储能规模化并网系统稳定性研究中的不足，得出如下结论：在稳定性研究中，电池储能常被简化为恒压、恒流、恒功率源/荷，但类似简化可能会因误差累积效应而导致电池储能规模化并网系统的稳定性误判，需明确量化电池储能的简化条件和误差的影响；现有研究集中于单个电池储能并网系统，沿用传统的电力系统稳定性分析方法，较少关注储能功率双向性及数量规模化对交流、直流系统稳定性的影响，需进一步探索揭示其失稳机理；现有研究仅针对单一控制的电池储能并网系统，未考虑电池储能在不同场景和需求下控制方式的多样性，需关注多样化电池储能控制间的动态交互规律及失稳风险。 |
| 关键词: 电池储能并网系统 小干扰稳定性 误差累积效应 功率双向性 控制多样性 |
| DOI：10.16081/j.epae.202308009 |
| 分类号: |
| 基金项目:国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(基于异构设备时序耦合建模的地区电网弹性负荷调控方法研究)(U2166209) |
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| Review of research on small-signal stability of grid-connected battery energy storage system |
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LI Yanxin, FU Qiang, XIAO Xianyong
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College of Electrical Engineering, Sichuan University, Chengdu 610065, China
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| Abstract: |
| In order to clarify the potential instability risks of large-scale grid-connected battery energy storage system, the stability problems and mechanisms caused by grid-connected battery energy storage are reviewed from the two perspectives of AC and DC, the differences between battery energy storage and power electronic equipment of renewable energy, such as photovoltaic, wind turbine and so on, are clarified, and the short-comings of the existing results in the stability research of large-scale grid-connected battery energy storage system are pointed out. The relevant conclusions are drawn. In the study of stability, the battery energy sto-rage is often simplified as constant voltage, constant current and constant power source or load, but similar simplification may lead to misjudgment of the stability of large-scale grid-connected battery energy storage system due to the error accumulation effect, so it is necessary to clearly quantify the influence of simplification conditions and errors. Current studies focus on a single grid-connected battery energy storage system, use the traditional power system stability analysis method, and pay less attention to the influence of bidirectional power characteristic and the quantity scale on the stability of AC and DC systems, so it is necessary to further explore and reveal its instability mechanism. Existing studies only focus on the grid-connected battery energy storage system with a single control, and do not consider the control mode diversity of battery energy storage under different scenarios and demands, so it is necessary to pay attention to the dynamic interaction law and instability risk among diverse battery energy storage controls. |
| Key words: grid-connected battery energy storage system small-signal stability error accumulation effect bidirectional power characteristic control diversity |
