4.6 Article

Modeling of MMC-based STATCOM with embedded energy storage for the simulation of electromagnetic transients

期刊

ELECTRIC POWER SYSTEMS RESEARCH
卷 220, 期 -, 页码 -

出版社

ELSEVIER SCIENCE SA
DOI: 10.1016/j.epsr.2023.109316

关键词

Energy storage; Modeling; Modular multilevel converter; EMT; STATCOM

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This paper focuses on modeling Delta-connected STATCOMs with embedded energy storage devices based on the Modular Multilevel Converter (MMC) technology. A flexible modeling approach is proposed, allowing easy interfacing of various converter models with various energy storage device models. Four commonly used types of MMC models are applied to STATCOM modeling: detailed, detailed equivalent, arm equivalent, and average value. Super-capacitors and batteries are used as energy storage devices, and the dynamic performances of the models are compared in transient simulation cases using EMTP.
The Delta-connected STATCOM is regarded as the most advantageous topology for STATCOMs based on the Modular Multilevel Converter (MMC) technology. Embedding energy storage devices into the MMCs has gained significant research interest in recent years. This paper focuses on modeling of MMC-based Delta-STATCOMs with embedded energy storage. A flexible modeling approach is proposed, which allows easy interfacing of various converter models with various energy storage device models. Four commonly used types of MMC models are applied to STATCOM modeling: detailed, detailed equivalent, arm equivalent, and average value. Super -capacitors and batteries are used as energy storage devices. Dynamic performances of the models are compared in transient simulation cases using EMTP.

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