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Stability Enhancement of a Hybrid Micro-grid System in Grid Fault Condition
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  • Stability Enhancement of a Hybrid Micro-grid System in Grid Fault Condition
  • Stability Enhancement of a Hybrid Micro-grid System in Grid Fault Condition
저자명
Ambia. Mir Nahidul,Al-Durra. Ahmed,Caruana. Cedric,Muyeen. S.M.
간행물명
Journal of international Conference on Electrical Machines and Systems
권/호정보
2013년|2권 2호|pp.225-231 (7 pages)
발행정보
대한전기학회 분과
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정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

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.