Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid

Zhixiang Zou; Jian Tang; Marco Liserre; Zheng Wang; Ming Cheng

doi:10.17775/CSEEJPES.2021.06600

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Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid

Regular Papers | 更新时间：2026-02-06

- Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid
- Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid
- 中国电机工程学会电力与能源系统学报(英文) 2025年11卷第2期页码：714-723
- 作者机构：
  
  1. School of Electrical Engineering, Southeast University,Nanjing,China
  2. Chair of Power Electronics, Kiel University,Kiel,Germany
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.06600
  中图分类号：
- 纸质出版：2025
- 稿件说明：
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Zhixiang Zou, Jian Tang, Marco Liserre, 等. Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(2):714-723.

Zhixiang Zou, Jian Tang, Marco Liserre, et al. Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid[J]. CSEE Journal of Power and Energy Systems, 2025, 11(2): 714-723.
Zhixiang Zou, Jian Tang, Marco Liserre, 等. Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(2):714-723. DOI： 10.17775/CSEEJPES.2021.06600.

Zhixiang Zou, Jian Tang, Marco Liserre, et al. Modeling and Stability Analysis of Meshed Smart Transformer-Fed Grid[J]. CSEE Journal of Power and Energy Systems, 2025, 11(2): 714-723. DOI： 10.17775/CSEEJPES.2021.06600.

摘要

Abstract

The Smart Transformer (ST) is a solid-state transformer with control and communication functionalities

interfacing medium voltage and low voltage (LV) grids. The ST can work in both ways: it can operate in a radial network independently

and it also provides meshed operation. In particular

a meshed ST-fed grid is able to optimize the power flow of the network

therefore largely avoiding the reinforcement of utilities. Though the ST can address system-level issues

challenges in terms of control and stability are encountered. The modeling as well as stability analysis of ST converter and its control for meshed operation have rarely been studied. More importantly

the interactions between ST and grid-interfaced converters during meshed operation have not yet been investigated. To ensure reliable ST-fed grid

this paper develops a complete model of ST LV converter considering all the key elements for the meshed operation. System stability is assessed based on the developed model for different scenarios. The interactions between the ST and local grid converters are examined to provide comprehensive design guidelines for the meshed ST-fed grid. The control strategy and the theoretical analysis are validated by the simulation and experimental results.

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references

3. “LV ENGINE,” [Online]. Available: https://www.spenergynetworks.co.uk/pages/lvengine.aspx.

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