摘要
大规模新能源经柔直联网电磁暂态仿真系统内不同元件初始化过程功率相互耦合,导致初始化时间长、难度大、波形平稳性差,无法快速进入稳态、开展电磁暂态故障仿真分析。文章基于潮流解的电磁暂态初始化策略,分析初始化过程中不同新能源设备间的交互影响,研究基于钳位电压源的新能源场站初始化方法;揭示不同控制模式下柔直换流站的初始化特性,研究计及不同控制模式的多端柔性直流的初始化方法;为避免多换流站、换流站与新能源场站之间初始化过程中存在的功率交互,提升初始化效率,提出适用于大规模新能源经柔直联网电磁暂态仿真系统的高效初始化方法。最后,基于PSD-PSModel全电磁暂态仿真软件,构建不同场景下全电磁暂态仿真系统进行初始化,验证所提初始化方法的合理性和有效性。
Power interaction occurs in the initialization process of different components in the electromagnetic transient simulation system of large-scale new energy connected to the power grid through HVDC based on voltage source converter(VSC-HVDC).This will lead to prolonged initialization time,increased difficulty,and deteriorated stationarity of waveform,which cannot meet the needs of subsequent electromagnetic transient fault simulation analysis.The article adopts the strategy for electromagnetic transient initialization based on power flow solutions,analyzes the interaction between different new energy equipment during the initialization process,and studies the initialization method of new energy stations based on clamp voltage sources.The initialization characteristics of VSC-HVDC under different control modes are revealed,and the initialization methods of multi-terminal VSC-HVDC considering different control modes are studied.To avoid power interaction during the initialization process between multiple converter stations,converter stations,and new energy stations,and improve initialization efficiency,an efficient initialization method for electromagnetic transient simulation systems of large-scale new energy connected to the power grid through VSC-HVDC is proposed.Finally,the full electromagnetic transient simulation systems under different scenarios are established in the PSD-PSModel full electromagnetic transient simulation software for initialization,verifying the rationality and effectiveness of the proposed initialization method.
作者
连攀杰
刘文焯
孙华东
郑超
张恒悦
汤涌
白杰伟
LIAN Panjie;LIU Wenzhuo;SUN Huadong;ZHENG Chao;ZHANG Hengyue;TANG Yong;BAI Jiewei(State Key Laboratory of Power Grid Safety and Energy Conservation(China Electric Power Research Institute),Haidian District,Beijing 100192,China)
出处
《中国电机工程学报》
北大核心
2025年第10期3775-3787,I0015,共14页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
国家电网有限公司科技项目(5100-202355385A-2-3-XG)。
关键词
电磁暂态
初始化
柔性直流
新能源
PSModel
electromagnetic transient
initialization
voltage source converter
newenergy
PSModel
