Islanding Control Architecture in future smart grid with both demand and wind turbine control

Yu Chen, Zhao Xu, Jacob Østergaard

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In recent years, a large number of Distributed Generation units (DG units) such as Wind Turbines (WTs) and Combined Heat and Power plants (CHPs) have been penetrating the distribution systems. Meanwhile, an intentional island operation of distribution systems is proposed as a potential measure against power supply outages by continuously running DG units during system emergencies. However, there are some challenging security issues for an island operation, such as the power imbalance during the islanding transition and the coordination of feeder protection systems. To tackle the former issue, which is the focus of this paper, available resources including both DG units and demand should be fully utilized as reserves. The control and coordination among different resources requires an integral architecture to serve the purpose. This paper develops the Islanding Control Architecture (ICA) for future smart grid, based on the Islanding Security Region (ISR) concept. With the ISR, system operators can assess beforehand if an island operation can be successful for a given distribution system at its current operating state. In case of unfavorable assessment, control measures will be suggested to coordinate different resources, aiming at pulling the system back into the ISR to ensure a successful island operation on time.
Original languageEnglish
JournalElectric Power Systems Research
Volume95
Pages (from-to)214-224
ISSN0378-7796
DOIs
Publication statusPublished - 2013

Keywords

  • Control architecture
  • Demand
  • Distributed generation
  • Island operation
  • Wind turbine

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