Control Mechanism and Security Region for Intentional Islanding Transition

Yu Chen, Zhao Xu, Jacob Østergaard

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This paper investigates the control mechanism for intentional islanding transition, when a Low Voltage (LV) or Medium Voltage (MV) distribution system, which is usually under grid connection mode, is supposed to be separated from the upstream grid, due to either maintenance or a disturbance in the grid. The concept of Islanding Security Region (ISR) has been proposed as an organic composition of the developed control mechanism. The purpose of this control mechanism is to maintain the frequency stability and eventually the security of power supply to the customers, by utilizing resources from generation and demand sides. The control mechanism can be extended to consider the distributed generations like wind power and other innovative technologies such as the Demand as Frequency controlled Reserve (DFR) technique in the future.
Original languageEnglish
Title of host publicationPES'09
Publication date2009
ISBN (Print)978-1-4244-4241-6
Publication statusPublished - 2009
EventPower & Energy Society General Meeting - Calgary, Canada
Duration: 1 Jan 2009 → …


ConferencePower & Energy Society General Meeting
CityCalgary, Canada
Period01/01/2009 → …

Bibliographical note

Funded by Danish Transmission System Operator
Copyright: 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


  • Security Region
  • Intentional Islanding Operation
  • Distributed Generation

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