Near-Synchornous Resonance Interaction of Paralleled Grid-forming Converters in Islanded Operation

Zheming Jin, Xiongfei Wang, Yicheng Liao, Dongsheng Yang, Andrew Burstein, Erik De Jong

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

The natural synchronous resonance issue is one of the key features of grid-forming converters. It is caused by the frequency-shifting nature of power calculation when adopting power based synchronization mechanism. This paper is a report of a 33kW power-hardware-in-the-loop test, whose results show that not only synchronous resonance but also near-synchronous resonance phenomenon can occur due to interaction between the active power control loops of grid-forming converters when operating in islanded mode. In addition to that, the test results also show that the different resonance modes are highly related to the cutting frequency design of the low-pass filter used in the power calculation process. In this paper, analytical model is established to figure out the root cause of such interaction. A preliminary design guideline for the filter design is also proposed to avoid such unstable interaction.
Original languageEnglish
Title of host publication2019 4th IEEE Workshop on the Electronic Grid, eGRID 2019
PublisherIEEE
Publication dateNov 2019
Article number9092690
ISBN (Electronic)9781728157047
DOIs
Publication statusPublished - Nov 2019
Event4th IEEE Workshop on the Electronic Grid, eGRID 2019 - Xiamen, China
Duration: 11 Nov 201914 Nov 2019

Conference

Conference4th IEEE Workshop on the Electronic Grid, eGRID 2019
CountryChina
CityXiamen
Period11/11/201914/11/2019
Series2019 4th IEEE Workshop on the Electronic Grid, eGRID 2019

Keywords

  • Grid-forming control
  • Interaction
  • Islanded operation
  • Near-synchronous resonance
  • Synchronous resonance

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  • Cite this

    Jin, Z., Wang, X., Liao, Y., Yang, D., Burstein, A., & De Jong, E. (2019). Near-Synchornous Resonance Interaction of Paralleled Grid-forming Converters in Islanded Operation. In 2019 4th IEEE Workshop on the Electronic Grid, eGRID 2019 [9092690] IEEE. 2019 4th IEEE Workshop on the Electronic Grid, eGRID 2019 https://doi.org/10.1109/eGRID48402.2019.9092690