Adaptive DC stabilizer with reduced DC fault current for active distribution power system application

Dong Chen, Lie Xu, James Yu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper takes a systematic view on the control
and protection of medium power DC networks in an active
distribution power system considering fault current limiting,
system control and converter design. Reduced terminal
capacitance and extra DC impedance are used to limit DC fault
current and reduce the required converter current rating for
medium power DC networks. An adaptive DC power stabilizer is
proposed to alleviate possible system instability brought by the
fault current limiting settings in the presence of constant power
load. The effect of the current limiting method and the proposed
stabilizer on DC fault current and stability enhancement are
validated by simulation studies using a simple two-converter DC
network and a multi-terminal DC network in an active
distribution power system
LanguageEnglish
Number of pages10
JournalIEEE Transactions on Power Systems
Early online date19 May 2016
DOIs
Publication statusE-pub ahead of print - 19 May 2016

Fingerprint

Electric fault currents
Control systems

Keywords

  • DC power system
  • DC protection
  • DC stabilizer
  • active distribution power system
  • DC microgrid

Cite this

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abstract = "This paper takes a systematic view on the controland protection of medium power DC networks in an activedistribution power system considering fault current limiting,system control and converter design. Reduced terminalcapacitance and extra DC impedance are used to limit DC faultcurrent and reduce the required converter current rating formedium power DC networks. An adaptive DC power stabilizer isproposed to alleviate possible system instability brought by thefault current limiting settings in the presence of constant powerload. The effect of the current limiting method and the proposedstabilizer on DC fault current and stability enhancement arevalidated by simulation studies using a simple two-converter DCnetwork and a multi-terminal DC network in an activedistribution power system",
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AU - Xu, Lie

AU - Yu, James

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N2 - This paper takes a systematic view on the controland protection of medium power DC networks in an activedistribution power system considering fault current limiting,system control and converter design. Reduced terminalcapacitance and extra DC impedance are used to limit DC faultcurrent and reduce the required converter current rating formedium power DC networks. An adaptive DC power stabilizer isproposed to alleviate possible system instability brought by thefault current limiting settings in the presence of constant powerload. The effect of the current limiting method and the proposedstabilizer on DC fault current and stability enhancement arevalidated by simulation studies using a simple two-converter DCnetwork and a multi-terminal DC network in an activedistribution power system

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