Electromagnetic Transient Real-time Low-consumption Equivalent Model of Dual Active Bridge Based Power Electronic Transformer

GAO Chenxiang; LIN Danying; HAN Linjie; FENG Moke; XU Jianzhong; LI Binbin

doi:10.7500/AEPS20230706005

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Electromagnetic Transient Real-time Low-consumption Equivalent Model of Dual Active Bridge Based Power Electronic Transformer

Basic Research | 更新时间：2025-06-16

- Electromagnetic Transient Real-time Low-consumption Equivalent Model of Dual Active Bridge Based Power Electronic Transformer
- Automation of Electric Power Systems Vol. 48, Issue 8, Pages: 195-206(2024)
- 作者机构：
  
  1.新能源电力系统国家重点实验室(华北电力大学),北京市 102206
  2.哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市 150001
- 作者简介：
- 基金信息：
  
  Beijing Natural Science Foundation of China(3222059)
- DOI：10.7500/AEPS20230706005
  CLC：
- Received：06 July 2023，
  
  Revised：2023-11-06，
  
  Published Online：23 February 2024，
  
  Published：25 April 2024
- 稿件说明：
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高晨祥,林丹颖,韩林洁等.双有源桥型电力电子变压器电磁暂态实时低耗等效模型[J].电力系统自动化,2024,48(8):195-206.

GAO Chenxiang,LIN Danying,HAN Linjie,et al.Electromagnetic Transient Real-time Low-consumption Equivalent Model of Dual Active Bridge Based Power Electronic Transformer[J].Automation of Electric Power Systems,2024,48(8):195-206.
高晨祥,林丹颖,韩林洁等.双有源桥型电力电子变压器电磁暂态实时低耗等效模型[J].电力系统自动化,2024,48(8):195-206. DOI： 10.7500/AEPS20230706005.

GAO Chenxiang,LIN Danying,HAN Linjie,et al.Electromagnetic Transient Real-time Low-consumption Equivalent Model of Dual Active Bridge Based Power Electronic Transformer[J].Automation of Electric Power Systems,2024,48(8):195-206. DOI： 10.7500/AEPS20230706005.

摘要

电力电子变压器(PET)是柔性直流配电网中电能变换的关键设备。受仿真资源限制，现有PET电磁暂态(EMT)实时仿真规模较小，无法满足大容量系统硬件在环测试与快速仿真需求。文中提出一种双有源桥(DAB)型PET实时低耗等效建模算法。首先，深入挖掘了DAB高频链端口解耦模型的二值输入导纳特性，并从数值分析与物理意义两个层面进行了阐述。以此为基础，构建了具有

+1特性的PET高频链端口解耦模型。其次，提出了基于有限存储的低内存占用EMT解算方案、紧凑型低延时仿真框架、分组并行流水线计算硬件实现方案，降低了所提等效模型在实时仿真中对存储内存、计算时钟和硬件资源的需求。最后，在RT-LAB中完成了基于Verilog语言的250 ns实时低耗等效仿真模型开发，并进行了所建模型仿真精度和资源利用率测试。

Abstract

Power electronic transformers (PETs) are key devices for power conversion in flexible DC distribution networks. Due to the limitation of simulation resources

the scales of existing electromagnetic transient (EMT) real-time simulations for PETs are small

which can not meet the demand of hardware-in-loop test and fast simulation for the large-capacity system. This paper proposes a real-time low-consumption equivalent modeling algorithm for dual active bridge (DAB) based PETs. Firstly

the binary input admittance characteristics of the high-frequency link port decoupling model (HFL-PDM) of the DAB are deeply explored and elaborated from the perspective of numerical analysis and physical significance. Based on this

the HFL-PDM of the PET with the

+1 characteristics is constructed. Secondly

a low-memory-occupancy EMT solution scheme using limited storage

a compact low-latency simulation framework

and a hardware implementation scheme using packet-based parallel pipeline computing are designed

which reduce the demand for the storage memory

the computing clock

and the hardware resource during the real-time simulation. Finally

the real-time low-consumption equivalent simulation model at a time step of 250 ns is developed based on Verilog language in RT-LAB. The simulation accuracy and resource utilization of the established model are tested.

关键词

Keywords

references

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