Hybrid Micro-grid Operation Characterization Considering Grid Codes

  • Mazheruddin Hussain Syed

Student thesis: Master's Thesis


Global environmental protection policies have led to large scale research and development of alternative and sustainable energy such as photovoltaic systems (PV) and wind energy systems. The intermittency of renewable energy sources is one of the major drawbacks of such systems. Hybrid micro-grids, micro-grids comprising of a combination of conventional and renewable energy generations, are one of the most viable solutions to the present day problem of integration of renewable energy into existing power systems. With various options available for implementation of hybrid micro-grids, the stability of such systems has to be ensured before they can be implemented. Further, conventional micro-grid operational studies do not take into consideration the constraints set by the grid codes. This work analyzes three types of grid interconnection scenarios possible for implementation of hybrid micro-grids, taking into consideration the stability and grid code constraints. A review of requirements of grid codes to operate a micro-grid connected to its grid is presented. The hybrid micro-grid considered comprises of a synchronous diesel generator and an inverter based distributed generation (IBDG). A complete operational analysis is done for different possible modes of operation of a hybrid micro-grid. The results and analysis are conducted by time domain simulations using Matlab/Simulink software. The results provide the actual operational limits of possible micro-grid interconnections under the set of given constraints. Further, potential solutions have been identified and discussed.
Date of AwardJun 2013
Original languageAmerican English
SupervisorHatem Zein El din (Supervisor)


  • Environmental Protection; Hybrid Micro-Grids; Renewable Energy Source; Power System Stability.

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