Title page for ETD etd-05252012-144155

Type of Document Master's Thesis
Author Lamichhane, Sumiti
URN etd-05252012-144155
Title Micro Grid Stability Improvements by Employing Storage
Degree Master of Science in Electrical Engineering (M.S.E.E.)
Department Electrical & Computer Engineering
Advisory Committee
Advisor Name Title
Mehraeen, Shahab Committee Chair
Gu, Guoxiang Committee Member
Mendrela, Ernest Committee Member
  • micro grid
  • storage
  • battery
  • thermal storage
  • stability
Date of Defense 2012-05-04
Availability unrestricted
Storage devices can be used in a power gird to store the excess energy when the energy production is high and the demand is low and utilize the stored energy when the produced energy cannot meet the high demands of the consumers. This thesis represents a micro grid consisting of a conventional synchronous generator, as well as renewable energy sources, energy storage, and loads in order to investigate the effective energy flow control and transient stability improvement by employing thermal storage. Thermal storage, unlike electrical one (such as battery) is more environmental friendly, has longer life span, and is more effective in power flow control. In this thesis, resistive and heat pump type thermal storage are proposed and its stability effects on micro grids are evaluated. A suitable model is developed for the thermal storage and the gridís stability analysis is adopted by using linearization methods. Consequently, by designing an optimal controller for the storage the stability of the micro grid is improved as verified through the simulations.
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