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电力系统机电-电磁混合仿真边界解耦算法研究

Research on Power System Electromechanical-electromagnetic Hybrid Simulation Algorithm Based on Boundary Decoupling
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摘要 提出了一种基于边界点分群解耦的机电–电磁混合仿真算法。算法首先将特高压交直流电网划分为电磁网,实现机电暂态网络在边界点处分组解耦;然后在电磁侧首先按照分布参数长传输线解耦将网络划分为多个连通子网,并按指定分网个数约束利用启发式规则进行子网合并和均匀化处理;接着以机电网解耦初始状态为基础形成子网群。子网群间机电侧完全解耦,电磁侧仅通过分布参数长传输线相连;最后在此分网方案基础上,提出机电侧主控进程并行化处理方法和电磁侧子网群主控进程并行算法。算法理论推导与仿真表明,文中算法能大幅提高交直流混联背景下含大量机电–电磁边界点混合仿真时计算效率。 An electromechanical-electromagnetic hybrid simulation algorithm based on boundary nodes grouping and decoupling is proposed. First UHV AC/DC backbone network is divided into electromagnetic network, and the other networks will be decoupled at the boundary nodes by group as electromechanical network. Then electromagnetic network is divided into many connected subnets by distributed parameter decoupling long transmission lines. Furthermore, according to constraint of the designated number of subnets, the heuristic rules are used for subnets merging and homogenizing, and based on the decoupling initial state of electromechanical network, the scheme of grouping boundary nodes is formed. So the subnet groups at electromechanical side are completely decoupled, and the subnet groups at electromagnetic side are only connected by decoupling long transmission lines. Finally,the parallel methods of the main control at electromechanical and electromagnetic sides are proposed based on this scheme.The theoretical derivation and simulation of the algorithm shows that the algorithm can improve the efficiency of the hybrid simulation with a large number of boundary nodes greatly.
作者 徐得超 张星 何飞 穆清 金一丁 李亚楼 郭袅 祖光鑫 XU Dechao;ZHANG Xing;HE Fei;MU Qing;JIN Yiding;LI Yalou;GUO Niao;ZU Guangxin(State Key Laboratory of Power Grid Safety and Energy Conservation (China Electric Power Research Institute),Haidian District,Beijing 100192,China;National Power Dispatching and Control Center,Xicheng District,Beijing 100031,China;Heilongjiang Electric Power Research Institute,Harbin 150030,Heilongjiang Province,China)
出处 《电网技术》 EI CSCD 北大核心 2019年第4期1130-1137,共8页 Power System Technology
基金 国家电网有限公司科技项目(支持大规模电磁模型的交直流电网电磁-机电混合仿真关键技术研究)。
关键词 混合仿真 并行计算 网络分割 机电暂态 电磁暂态 hybrid simulation parallel computing network partition electromechanical transients electromagnetic transients
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