全球能源互联网2025，Vol.8Issue(4)：456-468,13.DOI:10.19705/j.cnki.issn2096-5125.20250010
含虚拟阻抗限流构网设备的新能源多馈入系统过电压分析与评估
Overvoltage Analysis and Evaluation of Renewable Energy Multi-infeed System with Virtual Impedance Current Limiting Grid-forming Equipment
摘要
Abstract
During the recovery period of an AC fault,the delay of reactive power control of renewable energy units can lead to serious temporary overvoltage problem in the power system,which poses a threat to the safe and stable operation of the system.The grid-forming equipment has the ability of self-networking operation,which can provide voltage support for the system,and will help to stabilize the system voltage fluctuation.Therefore,for the renewable energy multi-infeed system with grid-forming equipment,the mechanism of overvoltage caused by the control delay of renewable energy and the influence of grid-forming equipment on overvoltage are first analyzed.Secondly,based on the fault response characteristics of renewable energy units and grid-forming equipment with virtual impedance current limiting,the equivalent model is established,and the method of temporary overvoltage quantification and risk assessment under multi-infeed scenario is proposed.After that,based on the two-infeed system of renewable energy and grid-forming equipment,the influence of grid-forming equipment capacity and overcurrent capacity on temporary overvoltage is analyzed.Finally,the effectiveness of the above method is verified by electromagnetic transient simulation experiments.关键词
构网设备/虚拟阻抗/暂时过电压/新能源机组/评估方法Key words
grid-forming equipment/virtual impedance/temporary overvoltage/renewable energy unit/evaluation method分类
信息技术与安全科学引用本文复制引用
汪莹,李鹏瀚,崔伟,王蒙,黄劼睿,孙健,辛焕海..含虚拟阻抗限流构网设备的新能源多馈入系统过电压分析与评估[J].全球能源互联网,2025,8(4):456-468,13.基金项目
国家电网有限公司西北分部项目(SGNW0000FGJS2400312).Foundation of Northwest Branch of SGCC(SGNW0000FGJS2400312). （SGNW0000FGJS2400312）
