Control for grid-connected and intentional islanding operations of distributed power generation

Irvin J. Balaguer, Qin Lei, Shuitao Yang, Uthane Supatti, Fang Zheng Peng

Research output: Contribution to journalArticlepeer-review

535 Scopus citations


Intentional islanding describes the condition in which a microgrid or a portion of the power grid, which consists of a load and a distributed generation (DG) system, is isolated from the remainder of the utility system. In this situation, it is important for the microgrid to continue to provide adequate power to the load. Under normal operation, each DG inverter system in the microgrid usually works in constant current control mode in order to provide a preset power to the main grid. When the microgrid is cut off from the main grid, each DG inverter system must detect this islanding situation and must switch to a voltage control mode. In this mode, the microgrid will provide a constant voltage to the local load. This paper describes a control strategy that is used to implement grid-connected and intentional-islanding operations of distributed power generation. This paper proposes an intelligent load-shedding algorithm for intentional islanding and an algorithm of synchronization for grid reconnection.

Original languageEnglish (US)
Article number5462910
Pages (from-to)147-157
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Issue number1
StatePublished - Jan 2011
Externally publishedYes


  • Distributed generation (DG)
  • grid-connected operation
  • intentional-islanding operation
  • islanding detection
  • load shedding
  • synchronization

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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