马鑫,李宏强,吕思卓,郑超
MA Xin,LI Hongqiang,LYU Sizhuo,ZHENG Chao

• 1:国网宁夏电力有限公司电力科学研究院
• 2:中国电力科学研究院有限公司

摘要(Abstract)：

随着技术性能提升和成本降低，构网型储能集中并网规模不断扩大，其对系统短路电流的影响不容忽视。基于构网型储能的机电暂态仿真模型，分析不同限幅策略下设备的短路电流幅相特性，并通过算例仿真不同储能接入规模、过流能力、并网电压等级及运行工况下近区母线短路电流的变化情况，从多个角度揭示储能并网对近区母线短路电流的影响规律，量化构网型储能对并网母线短路电流的贡献幅值，并针对考虑短路电流提升效果的构网型储能容量配置及布点提出相关建议。
With technological advancements and cost reduction, the centralized integration of grid-forming energy storage system has significantly expanded. This integration notably impacts the short-circuit currents of power system, an effect that warrants careful consideration. This paper utilizes an electromechanical transient simulation model for grid-forming energy storage system to examine the amplitude and phase characteristics of short-circuit currents under various limiting strategies. Case simulations are conducted to assess changes in short-circuit currents at nearby buses under different scales of energy storage system integration, overcurrent capabilities, grid voltage levels, and operating conditions. This comprehensive analysis reveals the influence of energy storage integration system on the bus short-circuit currents and quantifies the contribution of grid-forming energy storage system to the shortcircuit currents. Based on these findings, the paper offers recommendations for capacity allocation and placement of grid-forming energy storage system, taking into account their impact on short-circuit current levels.

关键词(KeyWords)： 构网型储能;集中接入;短路电流;控制策略;影响因素
grid-forming energy storage;centralized integration;short-circuit current;control strategy;impact factor

Abstract:

Keywords:

基金项目(Foundation): 国网宁夏电力有限公司科技项目（5229DK230002）;; 国家自然科学基金资助项目（U2166601）

作者(Author): 马鑫,李宏强,吕思卓,郑超
MA Xin,LI Hongqiang,LYU Sizhuo,ZHENG Chao

DOI: 10.19585/j.zjdl.202409007

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