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清华大学学报(自然科学版)  2019, Vol. 59 Issue (10): 796-806    DOI: 10.16511/j.cnki.qhdxxb.2019.21.021
  专题:电力系统 本期目录 | 过刊浏览 | 高级检索 |
面向区域电能路由器的高效仿真建模方法
易姝娴, 袁立强, 李凯, 沈瑜, 赵争鸣
清华大学 电机工程与应用电子技术系, 北京 100084
High-efficiency modeling method for regional energy routers
YI Shuxian, YUAN Liqiang, LI Kai, SHEN Yu, ZHAO Zhengming
Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
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摘要 随着区域电能路由器功率等级的提升,其拓扑结构和控制策略设计越来越复杂。如果基于装置的详细拓扑搭建仿真模型,则会导致装置或系统的电磁暂态仿真效率十分低下。针对已有的围绕电力电子装置或系统高效仿真建模方法的不足,该文基于暂态等值模型,提出了适用于区域电能路由器的高效仿真建模方法。该方法通过级间解耦方法,将复杂的电路网络分割成若干个子网,并通过模块及模块组合的Thevenin等效方法降低了单个网络的节点数量,从而实现了对节点导纳矩阵的降阶处理,提高仿真效率。该方法可适用于装置的稳态及负载切换、故障时装置的运行调试,也可适用于与电网的联合仿真。基于一台10 kV/1 MW四端口区域电能路由器进行测试,证明了该方法的快速性和准确性。
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易姝娴
袁立强
李凯
沈瑜
赵争鸣
关键词 能源互联网区域电能路由器建模仿真暂态等值模型Thevenin等效方法    
Abstract:As the power level of regional energy routers increases, the router topologies and control strategies are becoming more complicated. Simulations based on the complete circuit model are very inefficient. This article presents a high-efficiency equivalent transient model method for regional energy routers that is much more efficient than previous models. The model decouples the various stages to divide the large complex circuit network into several small sub-networks with the Thevenin equivalent method applied to each module and module combination to reduce the number of nodes in each sub-network. This significantly reduces the order of the nodal admittance matrix which improves the simulation efficiency. This method is applied to a regional energy router to model steady operation, load switching or load failure conditions. This method can also be applied to regional energy router simulations when connected to the gird. Simulations of a 10 kV/1 MW four-port regional energy router show the high computational speed and accuracy of this method.
Key wordsenergy internet    regional energy router    modeling and simulation    transient equivalent model    Thevenin equivalent method
收稿日期: 2019-03-07      出版日期: 2019-10-14
基金资助:国家自然科学基金面上项目(51577100)
通讯作者: 袁立强,副教授,ylq@tsinghua.edu.cn     E-mail: ylq@tsinghua.edu.cn
引用本文:   
易姝娴, 袁立强, 李凯, 沈瑜, 赵争鸣. 面向区域电能路由器的高效仿真建模方法[J]. 清华大学学报(自然科学版), 2019, 59(10): 796-806.
YI Shuxian, YUAN Liqiang, LI Kai, SHEN Yu, ZHAO Zhengming. High-efficiency modeling method for regional energy routers. Journal of Tsinghua University(Science and Technology), 2019, 59(10): 796-806.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2019.21.021  或          http://jst.tsinghuajournals.com/CN/Y2019/V59/I10/796
  图1 区域电能路由器电路拓扑分类[5]
  图2 区域电能路由器电路拓扑[18]
  图3 电容元件及其暂态等值模型
  图4 H 桥背靠背电路及其时刻t暂态等值模型
  图5 H 桥电路
  图6 三相四桥臂电路
  图7 ±375V直流输出电路
  图8 图2中区域电能路由器输入侧等效电路
  图9 (网络版彩图)10kV/1MW四端口区域电能路由器示意图
  图10 10kV/1MW四端口区域电能路由器的简化仿真模型
  表1 10kV/1MW四端口区域电能路由器
  图11 (网络版彩图)各端口电压和电流波形(稳态运行工况)
  图12 (网络版彩图)各端口子模块电容电压波形(稳态运行工况)
  图13 (网络版彩图)各端口电压和电流波形(负载突变工况)
  图14 (网络版彩图)各端口子模块电容电压波形(负载突变工况)
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