Stability enhancement of a hybrid micro-grid system in grid fault condition

Mir Nahidul Ambia, Ahmed Al-Durra, Cedric Caruana, S. M. Muyeen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

Low voltage ride through capability augmentation of a hybrid micro-grid system is presented in this paper which reflects enhanced reliability in the system. The control scheme involves parallel connected multiple ac-dc bidirectional converters. When the micro-grid system is subjected to a severe voltage dip by any transient fault single power converter may not be able to provide necessary reactive power to overcome the severe voltage dip. This paper discusses the control strategy of additional power converter connected in parallel with main converter to support extra reactive power to withstand the severe voltage dip. During transient fault, when the terminal voltage crosses 90% of its pre-fault value, additional converter comes into operation. With the help of additional power converter, the micro-grid system withstands the severe voltage fulfilling the grid code requirements. This multiple converter scheme provides the micro-grid system the capability of low voltage ride through which makes the system more reliable and stable.

Original languageBritish English
Title of host publicationICEMS 2012 - Proceedings
Subtitle of host publication15th International Conference on Electrical Machines and Systems
StatePublished - 2012
Event15th International Conference on Electrical Machines and Systems, ICEMS 2012 - Sapporo, Japan
Duration: 21 Oct 201224 Oct 2012

Publication series

NameICEMS 2012 - Proceedings: 15th International Conference on Electrical Machines and Systems

Conference

Conference15th International Conference on Electrical Machines and Systems, ICEMS 2012
Country/TerritoryJapan
CitySapporo
Period21/10/1224/10/12

Keywords

  • Low voltage ride through
  • Micro-grid
  • PV system
  • Reliability
  • wind power generation system

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