Design and operation of double SMES coils for variable power system through VSC-HVDC connections

Taesik Nam, Jae Woong Shim, Kyeon Hur

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In this paper, a new topology incorporating double superconducting magnetic energy storage (SMES) coils is proposed, and control strategies for effectively delivering power to a grid via high-voltage direct current (HVDC) are developed. Power grids have become increasingly complex due to the use of renewable energy and dynamic loads. As such, it is important to design a power transmission system that satisfies power supply and demand requirements. HVDC is especially attractive for particular power transmission technologies, because the fast control characteristics of HVDC contribute to the stabilization of connected power grids. SMES has also received attention as a promising method to overcome the aforementioned issues. In the proposed scheme, one SMES coil in series with the dc line is specifically designed for use as a fault current limiter, while the other coil in parallel with the line is employed for energy storage. This study describes the effectiveness of combining these two schemes to mitigate the dynamic power fluctuation of generator and load, reinforcing controllability, and dependability of the power delivery. Case studies demonstrate the improved performance and robustness of voltage sourced converter-HVDC linked with double SMES coils for dc fault.

Original languageEnglish
Article number6412729
JournalIEEE Transactions on Applied Superconductivity
Volume23
Issue number3
DOIs
Publication statusPublished - 2013 Mar 11

Fingerprint

magnetic energy storage
Energy storage
high voltages
coils
direct current
power transmission
grids
Electric potential
Dynamic loads
Power transmission
dynamic loads
renewable energy
controllability
Fault current limiters
energy storage
power supplies
converters
delivery
Controllability
generators

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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abstract = "In this paper, a new topology incorporating double superconducting magnetic energy storage (SMES) coils is proposed, and control strategies for effectively delivering power to a grid via high-voltage direct current (HVDC) are developed. Power grids have become increasingly complex due to the use of renewable energy and dynamic loads. As such, it is important to design a power transmission system that satisfies power supply and demand requirements. HVDC is especially attractive for particular power transmission technologies, because the fast control characteristics of HVDC contribute to the stabilization of connected power grids. SMES has also received attention as a promising method to overcome the aforementioned issues. In the proposed scheme, one SMES coil in series with the dc line is specifically designed for use as a fault current limiter, while the other coil in parallel with the line is employed for energy storage. This study describes the effectiveness of combining these two schemes to mitigate the dynamic power fluctuation of generator and load, reinforcing controllability, and dependability of the power delivery. Case studies demonstrate the improved performance and robustness of voltage sourced converter-HVDC linked with double SMES coils for dc fault.",
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Design and operation of double SMES coils for variable power system through VSC-HVDC connections. / Nam, Taesik; Shim, Jae Woong; Hur, Kyeon.

In: IEEE Transactions on Applied Superconductivity, Vol. 23, No. 3, 6412729, 11.03.2013.

Research output: Contribution to journalArticle

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