Control of PV-Diesel Hybrid Isolated Power System with Hybrid Energy Storage

  • Ganesh Pandey

Student thesis: Master's Thesis

Abstract

Electricity is an essential commodity for development of any country or place, yet many people in rural areas are still deprived of it. Rural electrification is being addressed by governments all around the world in recent years. Generally, diesel generators are installed in remote locations to supply electricity as an isolated power system. Recent development in renewable energy sources has proved to be a better alternative to partially or completely replace fossil fuel-based energy generation. In this study, PV-Diesel hybrid system is modeled and the energy management schemes are developed to address the intermittency of PV, ensuring reliable operation of the isolated power system. As PV is an intermittent source of energy and thus, batteries are used with PV to make the system more reliable. However, batteries are stressed during rapid charge and discharge due to a sudden change in loading/operating scenarios which deteriorate the battery life. In this thesis, supercapacitors are utilized to absorb or supply faster dynamics of power change to improve the battery life. A reliable power management PV-hybrid isolated system is developed to operate at all the operating scenarios of loading and environmental condition. Furthermore, this thesis proposes the use of both batteries and supercapacitor to regulate frequency and voltage at the point of common coupling (PCC). The faster dynamics of battery and supercapacitor can improve the operation of the slower dynamics of the diesel generator without compromising the battery life.
Date of AwardMay 2017
Original languageAmerican English

Keywords

  • PV-Diesel Hybrid Power System
  • Renewable Energy
  • Energy Management Schemes
  • Energy storage Devices
  • Battery & Supercapacitor.

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