直流配电系统动态相量-电磁暂态混合仿真与误差机理分析  

Dynamic Phasor-electromagnetic Transient Hybrid Simulation and Error Mechanism Analysis of DC Distribution System

作　　者：陈鹏伟 卢亮[1] 刘念 孙雅旻 CHEN Pengwei;LU Liang;LIU Nian;SUN Yamin(Jiangsu Key Laboratory of New Energy Generation and Power Conversion(Nanjing University of Aeronautics and Astronautics),Nanjing 211106,Jiangsu Province,China;State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China;State Grid Jibei Electric Power Research Institute(North China Electric Power Research Institute Co.Ltd.),Xicheng District,Beijing 100045,China)

机构地区：[1]江苏省新能源发电与电能变换重点实验室(南京航空航天大学),江苏省南京市211106 [2]新能源电力系统国家重点实验室(华北电力大学),北京市昌平区102206 [3]国网冀北电力科学研究院(华北电力科学研究院有限责任公司),北京市西城区100045

出　　处：《中国电机工程学报》2023年第6期2283-2294,共12页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52007080);中国博士后科学基金项目(2020TQ0142);新能源电力系统国家重点实验开放课题(LAPS21008)。

摘　　要：为了高效地实现多端直流配电系统的准确动态仿真,在动态相量–电磁暂态混合仿真框架下,文章首先分析应用于直流配电系统时所涉及的子系统建模、接口机制和数据交互时序等执行要素。然后以混合仿真误差产生机理为切入点,以电磁暂态子系统为主要关注对象,详细分析简单阻感支路和复杂系统两种情况下混合仿真的误差传递过程,并推导了数值稳定的必要条件。其次,以串行时序为例,设计直流配电系统动态相量–电磁暂态混合仿真算法的主流程,并提出动态相量提取修正、直流量特征纹波添加等精度提升方法。最后,基于MATLAB/Simulink搭建多端直流配电系统同构串行混合仿真平台,通过对比全电磁暂态仿真,验证混合仿真的高效性及精度提升方法的有效性。To accurately and efficiently realize the simulation of complicated DC distribution systems,the essential ingredients of dynamic phasor-electromagnetic transient hybrid simulation applied to the DC distribution system are analyzed,which includes subsystem modeling,interface mechanism,and data interaction sequence.Starting from the error generation principle of hybrid simulation,the electromagnetic transient subsystem is taken as the main focus,of which the error transfer process is analyzed in two cases of simple resistive-inductive branch and complex system,as well as the necessary conditions of numerical stability.Then,the serial sequence is employed for designing the main algorithm of dynamic phasor-electromagnetic transient hybrid simulation,and the corresponding accuracy improvement methods are also proposed,including the correction for extracting dynamic phasor,and the addition of DC-side characteristic ripple.Finally,the isomorphism hybrid simulation platform based on MATLAB/Simulink is implemented.Through the comparison with the full electromagnetic transient simulation,the efficiency of the hybrid simulation,as well as the validity of the improvement methods,can be demonstrated,..

关 键 词：直流配电系统 动态相量 混合仿真 误差机理 精度提升方法 

分 类 号：TM711[电气工程—电力系统及自动化]