电力系统机电-电磁混合仿真边界解耦算法研究
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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.
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.
引文
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[15]陈亮,黄强,贾萌萌,等.基于柔性直流互联的交直流混合配电网建模与仿真分析[J].电网技术,2018,42(5):1410-1416.Chen Liang,Huang Qiang,Jia Mengmeng,et al.Modeling and simulation analysis of hybrid AC/DC distribution network based on flexible DC interconnection[J].Power System Technology,2018,42(5):1410-1416(in Chinese).
[2]岳程燕,田芳,周孝信,等.电力系统电磁暂态-机电暂态混合仿真接口原理[J].电网技术,2006,30(1):23-27.Yue Chengyan,Tian Fang,Zhou Xiaoxin,et al.Principle of interfaces for hybrid simulation of power system electromagneticelectromechanical transient process[J].Power System Technology,2006,30(1):23-27(in Chinese).
[3]岳程燕,田芳,周孝信,等.电力系统电磁暂态-机电暂态混合仿真接口实现[J].电网技术,2006,30(4):6-9.Yue Chengyan,Tian Fang,Zhou Xiaoxin,et al.Implemention of interfaces for hybrid simulation of power system electromagneticelectromechanical transient process[J].Power System Technology,2006,30(4):6-9(in Chinese).
[4]岳程燕.电力系统电磁暂态与机电暂态混合实时仿真的研究[D].北京:中国电力科学研究院,2004.
[5]柳勇军.电力系统机电暂态和电磁暂态混合仿真技术的研究[D].北京:清华大学,2006.
[6]中国电力科学研究院.电力系统全数字仿真装置用户手册V 2.0:概述[M].北京:中国电力科学研究院,2011.
[7]Davis T A.Fundamentals of algorithms:direct methods for sparse linear systems[M].Philadelphia:SIAM Society for Industrial and Applied Mathematics,2006.
[8]William H,Teukolsky Saul A,Vetterling W T,et al.Numerical recipes in C++the art of scientific computing second edition[M].Beijing:Publishing House of Electronics Industry,2003.
[9]李亚楼,周孝信,吴中习.基于PC机群的电力系统机电暂态仿真并行算法[J].电网技术,2003,27(11):6-12.Li Yalou,Zhou Xiaoxin,Wu Zhongxi.Personal computer cluster based parallel algorithms for power system electromechanical transient stability simulation[J].Power System Technology,2003,27(11):6-12(in Chinese).
[10]李亚楼,周孝信,吴中习.一种可用于大型电力系统数字仿真的复杂故障并行计算方法[J].中国电机工程学报,2003,23(12):1-5.Li Yalou,Zhou Xiaoxin,Wu Zhongxi.A parallel complex fault computation algorithm for large-scale power system digital simulation[J].Proceedings of the CSEE,2003,23(12):1-5(in Chinese).
[11]李亚楼.大规模电力系统机电暂态实时仿真算法及软件的研究[D].北京:中国电力科学研究院,2003.
[12]张伯明,陈寿孙,严正.高等电力网络分析[M].北京:清华大学出版社,2007.
[13]蔡普成,向往,彭红英,等.基于ADPSS的含背靠背MMC-HVDC系统的交直流电网机电-电磁混合仿真研究[J].电网技术,2018,42(12):3888-3894.Cai Pucheng,Xiang Wang,Peng Hongying,et al.Hybrid electromechanical-electromagnetic simulation of AC/DC power grid with back-to-back MMC-HVDC system based on ADPSS[J].Power System Technology,2018,42(12):3888-3894(in Chinese).
[14]董鹏,朱艺颖,郭强,等.基于HYPERSIM的直流输电系统数模混合仿真接口技术研究[J].电网技术,2018,42(12):3895-3902.Dong Peng,Zhu Yiying,Guo Qiang,et al.Hybrid digital-analog simulation interface technology for HVDC system based on HYPERSIM[J].Power System Technology,2018,42(12):3895-3902(in Chinese).
[15]陈亮,黄强,贾萌萌,等.基于柔性直流互联的交直流混合配电网建模与仿真分析[J].电网技术,2018,42(5):1410-1416.Chen Liang,Huang Qiang,Jia Mengmeng,et al.Modeling and simulation analysis of hybrid AC/DC distribution network based on flexible DC interconnection[J].Power System Technology,2018,42(5):1410-1416(in Chinese).