About 30% of all primary energy resources worldwide are used to generate electrical energy. Since the invention of the electric incandescent light bulb in 1879, the growth of electric power systems progressed at an exponential rate, particularly after the development of AC (alternating current) power generation and the transformer. Transforming AC power from one voltage level to much higher levels meant that losses and voltage drops in the supply lines could be kept at acceptable values. The contribution of different renewable energy sources to the electricity generation mix varies from one country to another, but generally this is currently a small proportion of the total installed capacity. The increase in renewable energy generation involves significant challenges in establishing cost-effective and reliable renewable energy systems in addition to solving the technical problems associated with their connection to the grid. In order to understand the impact of increased connection of RES on the grid and the need for smart grid solutions, it is important first to understand how electricity is currently generated, the characteristics of generation from RES, and some aspects of grid control.
|Title of host publication||Electric renewable energy systems|
|Editors||Muhammad H. Rashid|
|Place of Publication||London|
|Publication status||E-pub ahead of print - 19 Feb 2016|