变结构条件下智能配电软开关暂态快速仿真方法  

A Fast Algorithm of Electromagnetic Transient Simulation for Soft Open Points With Variable Structure Conditions

作　　者：王天昊[1] 李鹏[1] 于浩[2] 宋毅 王成山[1] WANG Tianhao;LI Peng;YU Hao;SONG Yi;WANG Chengshan(Key Laboratory of Smart Grid（Tianjin University）, Ministry of Education, Nankai District, Tianjin 300072, China;State Grid Tianjin Electric Power Maintenance Company, Hebei District, Tianjin 300230, China;State Grid Economic and Technological Research Institute Co. Ltd., Changping District, Beijing 102209, China)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市南开区300072 [2]国网天津市电力公司检修公司,天津市河北区300230 [3]国网经济技术研究院有限公司,北京市昌平区102209

出　　处：《电网技术》2018年第7期2279-2285,共7页Power System Technology

摘　　要：智能软开关（soft open point,SOP）对配电系统运行经济性、灵活性和可靠性的提升具有重要作用。为了更好地研究SOP在系统各种扰动下的动态行为特征,建立了考虑各种控制策略的SOP详细暂态仿真模型,采用基于Krylov子空间的模型降维化简（model order reduction,MOR）方法以提升配电系统的仿真计算效率,并提出新的算法将MOR方法用于变结构配电网络,使其能在多场景下对SOP进行分析。通过IEEE 123算例测试证明,该文方法能够在保证可接受的仿真精度前提下,有效降低整体模型规模,提升仿真计算效率,并满足各种外部扰动场景下的SOP暂态快速仿真分析需求。Soft open point（SOP） plays an important role in improving economy, flexibility and reliability of distribution system. To study SOP dynamics under different disturbances, an SOP model with various control strategies is established for detailed transient simulations. Model order reduction（MOR） method based on Krylov subspace theory is adopted to improve simulation efficiency of distribution system. A novel algorithm is proposed to extend MOR method to variable-structure networks, making it applicable to multi-scenario SOP analysis. The proposed method is tested on IEEE 123-node system, showing decrease of model scale, improvement in simulation efficiency, and feasibility for fast transient SOP analysis under various system disturbances with acceptable simulation accuracy.

关 键 词：KRYLOV子空间 模型化简 智能软开关 暂态仿真 

分 类 号：TM721[电气工程—电力系统及自动化]