Chapter 2: Energy Sources ppt

Chapter 2

Energy Sources

2.1 Distributed Generation

The motivations of moving towards small-scale and distribution energy systems are

many, such as

• Engine generators providing economic advantages of on-site cogeneration of heat

and power, or trigeneration of heat, electric power and cooling,

• Small groups of generators being localized and independent of distribution net￾work or grid failures,

• Reducing the utilisation of distribution networks and the power transmission lines

losses by locating energy systems closer to end-user,

• Increasing the reliability of the power systems and distribution networks, and

• Minimizing the impact of individual generator(s) failure in the distributed gener￾ation systems.

For the future Australian electricity supply industry, emphasis in the National En￾ergy Market (NEM) will be shifted away from the present use of a small number of large

centralised generators, such as coal-fired power plants, towards many smaller genera￾tors like natural-gas powered microturbines, photovoltaic arrays and wind generators

on industrial and commercial sites.

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