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Advances in Energy Research
  Volume 4, Number 1, March 2016 , pages 47-68

Optimal unidirectional grid tied hybrid power system for peak demand management
C.P. Vineetha and C.A. Babu

    A well designed hybrid power system (HPS) can deliver electrical energy in a cost effective way. In this paper, model for HPS consisting of photo voltaic (PV) module and wind mill as renewable energy sources (RES) and solar lead acid battery as storage device connected to unidirectional grid is developed for peak demand reduction. Life time energy cost of the system is evaluated. One year hourly site condition and load pattern are taken into account for analysing the HPS. The optimal HPS is determined for least life time energy cost subject to the constraints like state of charge of the battery bank, dump load, renewable energy (RE) generation etc. Optimal solutions are also found out individually for PV module and wind mill. These three systems are compared to find out the most feasible combination. The results show that the HPS can deliver energy in an acceptable cost with reduced peak consumption from the grid. The proposed optimization algorithm is suitable for determining optimal HPS for desired location and load with least energy cost.
Key Words
    renewable energy; renewable energy sources; hybrid power system; peak load management; distributed renewable energy generation
C.P. Vineetha and C.A. Babu: Division of Electrical Engineering, Cochin University of Science and Technology, Kochi, Kerala, India

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