Modeling and optimization of hybrid electric power systems for remote locations in extreme northern climates

Abstract

This thesis presents a long-term performance model of a hybrid electrical power system for remote locations in various parts of the world. The model incorporates the performance of different components of the hybrid power system in extreme northern climates. The hybrid model presented uses the graphical user interface available in MATLAB Simulink. Two variations of the hybrid model were developed. One model consists of a photo voltaic (PV) array with a diesel-battery system and the other model consists of a wind turbine with a diesel-battery system. The main performance criterion by which the system was evaluated is the percentage of fuel savings relative to the diesel only case. The results show the significant savings in fuel consumption due to the penetration of the battery bank, the photovoltaic module and the wind turbines in the diesel-only system, while increasing the overall efficiency of the system. This simulation tool will help designers to determine the best hybrid mix of diesel generation, battery storage, photovoltaics, and wind generation for optimal performance of the system in remote villages like those found in Alaska and other developing countries. Examples are presented based on actual systems in the remote Alaskan communities of Lime Village (PV with a diesel-battery) and Wales Village (wind with a diesel-battery).