摘要
为提高电力电子电磁瞬态仿真性能及算法收敛性,开发了一种基于FPGA-RTS的电磁瞬态仿真器,其采用改进的增强节点分析方法,将固定导纳矩阵节点方法与开关电导参数的最佳选择集成在一起,能够准确地再现电力电子设备中发生的电磁瞬态特征。仿真器应用高效的稀疏矩阵到矢量乘法器,可实现非常低的积分时间步长,基于自动化程序,以避免重新设计FPGA代码,直接将EMTP-RV中设计的电路原理图转换为相关的FPGA求解器。通过搭建高容量三相两电平逆变器模型,并进行硬件在环(hardware-in-the-loop,HIL)测试,对比分析FPGA-RTS实时仿真与EMTP-RV离线仿真结果,三相负载电流的HIL仿真结果与测量波形之间的误差为0.02(标幺值),完全满足实际工程应用,为分析配电网故障中的电磁瞬态特性提供一种有效方法。
In order to improve the algorithm convergence and scalability of power electronic electromagnetic transient simulation,we developed an automatic real-time electromagnetic transient simulator based on FPGA.The improved enhanced node analysis method was utilized,and the fixed admittance matrix node method was integrated with the best choice of switching conductance parameters,which could accurately reproduce the electromagnetic transient characteristics occurring in power electronic equipment.An efficient sparse matrix was applied to vector multiplication to realize a very low integration time step.An automated program was provided to avoid redesigning the FPGA code and directly converting the schematics designed in EMTP-RV to the associated FPGA solver.A high-capacity three-phase two-level inverter model was established,and the hardware-in-the-Loop(HIL)test was done.Moreover,the off-line simulation results of EMTP-RV and FPGA-RTS were compared and analyzed.The error between the HIL simulation results of the three-phase load current and the measured waveform is 0.02 pu,which fully satisfies the requirements of practical engineering application.Thus,an effective method for analyzing electromagnetic transient characteristics can be provided in distribution network faults.
作者
刘志恒
刘昊
孟晓凯
刘占强
冉宁
张照彦
LIU Zhiheng;LIU Hao;MENG Xiaokai;LIU Zhanqiang;RAN Ning;ZHANG Zhaoyan(College of Electronic Information Engineering,Hebei University,Baoding 071002,China;Key Laboratory of Opto-electronic Information Technology,Ministry of Education,Tianjin University,Tianjin 300072,China;State Grid Shanxi Electric Power Research Institute,Taiyuan 032100,China;China Construction First Bureau(Group)Co.,Ltd.North China Company,Tianjin 300457,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2020年第9期3238-3244,共7页
High Voltage Engineering
基金
河北省教育厅项目(QN2019202)
河北大学校长基金(XZJJ201908)
河北大学一省一校专项基金(801260201232)。
关键词
三相两电平逆变器
电磁瞬变
FPGA-RTS
实时仿真
硬件在环测试
three-phase two-level inverter
electromagnetic transients
FPGA-RTS
real-time simulation
hardware-in-the-loop test
