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Modelling of Isolated Systems

  • Anindita Roy
  • Santanu Bandyopadhyay
Chapter

Abstract

A detailed overview of the necessity and classification of off-grid power systems along with its component subsystems is presented in this chapter. Different interconnection schemes and their relative merits are then discussed. The fundamental issues underlying the design of an isolated power system are the match between the load and resource and the size of the storage system. Parameters affecting the sizing of the storage and the entire isolated system have been discoursed. In order to understand the trade-offs in the design, it is necessary to formulate the problem in terms of a mathematical model. The mathematical model of the wind turbine consisting of the blades, transmission and electrical generator, the model of the photovoltaic system, the inverter and battery bank are discussed. Models of the photovoltaic array and diesel generator system are also presented. These subsystem models are linked together to form the entire system model through an energy balance on the system. Through time series simulation of the system energy balance along with different design constraints, a set of feasible design options, known as the design space, can be identified. Such a plot of various feasible design options enables identification of the limits of wind turbine rated power and the battery size for a given demand and resource characteristics within which a feasible design is guaranteed. Contemporary software tools used accomplishing similar tasks are also discussed.

Keywords

System sizing Wind-battery systems Isolated power system design Design space Isolated system modelling 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Anindita Roy
    • 1
  • Santanu Bandyopadhyay
    • 2
  1. 1.Department of Mechanical EngineeringPimpri Chinchwad College of EngineeringPuneIndia
  2. 2.Department of Energy Science & EngineeringIndian Institute of Technology BombayMumbaiIndia

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