WIND DIESEL HYBRID POWER SYSTEM

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WIND DIESEL HYBRID POWER SYSTEM
VIGNANS LARA INSTITUTE OF TECHNOLOGY AND SCIENCE

• Aditya Pavan Kumar.T (08FE1A0202)

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CONTENTS

• Abstract
• Objective
• Introduction
• Penetration
• AC Based Hybrid System
• Benefits
• Technical Difficulties
• Conclusion
• References

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Abstract

• A wind-diesel hybrid system combines wind
  turbine(s)with diesel generator(s) to obtain a
  maximum contribution by the intermittent wind
  resource while providing continuous high quality
  electric power.

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Objective

• Reduce system fossil fuel consumption
• The more energy you use from your
  non-renewable utility provider, the more these
  non-renewable resources are wasted and the more
  harm is done to the environment.

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Introduction

• Wind power is expected to be economically
  attractive, but wind power generation is variable
  and unpredictable. The hybrid wind power with
  diesel generation has been suggested (Hunter,
  1994) and (Lipmann, 1989) to handle the problem
  above. A hybrid wind diesel system is very
  reliable because the diesel acts as a cushion to
  take care of variation in wind speed and would
  always maintain an average power equal to the set
  point.

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BLOCK DIAGRAM
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Penetration

• Instantaneous Penetration
• 
  
• Instantaneous Penetration Wind
  Power Output (kW)
• 
  .
• 
  Primary Electrical Load (kW)
• Average Penetration
•  
• Average Penetration Wind
  Energy Produced (kWh)
• 
  .
• 
  Primary Energy Demand (kWh)
•  

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AC Based Hybrid System

• Low penetration systems -Wind acts as a negative
  load, very little control or integration of wind
  turbines into the power system is needed.
• Medium penetration systems -Wind becomes a major
  part of the power system but diesel engines still
  provide much of the system power control.
  Additional components and limited supervisory
  control required to assist diesels in maintaining
  power quality.
• High penetration systems -Completely integrated
  power system with advanced control. Diesel
  generators shut off when not needed. Limited
  operational control of system by plant staff.

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AC Based Hybrid System
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Low Penetration System
Generally easy integration with existing diesel
system, little or no diesel modifications
required. Diesel engines provide all frequency,
voltage and reactive power control
requirements. Switch gear would need to be
modified to add turbines and turbine control
software installed. Modest fuel savings of up to
20 possible
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Medium Penetration System

• Diesel(s) are expected to operate at all times
  and provide main system stability control.
• Will need devices to help control system
  frequency, eliminate excess energy and provide
  VAR support.
• Secondary diesels may be shut off when not
  needed, reduces diesel operating hours and fuel
  use.
• In high peak wind periods, primary diesel runs
  at low loading.

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Medium Penetration System
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High Penetration System

• Use of wind allows all diesel engines to shut
  down during mid to high wind periods, reducing
  fuel consumption and operation hours
• Other hardware used to maintain system voltage,
  frequency, and reactive power requirements
• System controller continually monitors power
  system and dispatched equipment as needed to
  maintain system integrity

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High Penetration System (without Storage)
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High Penetration System (With Storage)

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Benefits
Reduced system operating costs. Reduced
environmental impacts. Reduced fuel consumption
. Can be the most economic option where fuel is
expensive and the renewable energy source is
good. Increased Reliability
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Technical difficulties

• High cost
• Power in rural areas is always expensive, but
  many elements drive up the cost of wind in rural
  areas.
• New Technology
• Wind-diesel technologies are relatively new,
  implementation in rural areas can be
  operationally challenging.

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Conclusions

• Given good wind resource and adequate project
  density ,high penetration wind-diesel systems can
  provide least life cycle cost of electricity in
  remote communities.
• Isolated communities, mining sites and other
  industrial outposts need to replace their
  expensive, polluting diesel generators with
  hybrid power systems that use wind.

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References

• Ackermann, T. (2005), Wind Power in Power
  Systems, John Wiley Sons. Hunter R.E.G. (1994),
  Wind-diesel systems a guide to technology and its
  implementation, Cambridge University Press.
  Lipman NH. (1989), Wind-diesel and autonomous
  energy systems, Elservier Science Publishers
  Ltd.
• Bhatti T.S., Al-Ademi A.A.F. Bansal N.K.
  (1997), Load frequency control of isolated wind
  diesel hybrid power systems, International
  Journal of Energy Conversion and Management, Vol.
  39, pp. 829-837.
• http//www.iser.uaa.alaska.edu/Publications/wind_d
  iesel10022010.pdf
• http//en.wikipedia.org/wiki/Wind_hybrid_power_sys
  tems
• http//energy-alaska.wikidot.com/wind-diesel-appli
  cations

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Thank You