ECONOMIC AND ENVIRONMENTAL EVALUATION OF HIGH WIND POWER PENETRATION IN THE GREEK INTERCONNECTED ENERGY PRODUCTION SYSTEM

摘要

The scope of this paper is the economic evaluation of the performance of the Greek Interconnected system with high wind power penetration. Typical operating days have been examined, with actual power demand data, for two levels of spinning reserve and different percentages of wind penetration (0% to 15% of the maximum load demand and the total energy demand of each day). The operation of the system for various levels of wind power penetration is studied based on optimal unit commitment. The comparison of the operation costs between the examined scenarios is based on the avoided fuel costs derived from the assumed wind power production. In addition, the environmental benefits obtained by the exploitation of renewable sources are calculated from the decrease of Green House Gases that would be emitted, if the equivalent energy was produced by the existing conventional thermal power stations. The economic results show an expected profit between 6% and 15% of the energy production cost when the power penetration reaches 15% of the total daily energy demand and the assumed level of spinning reserve is 10% of the demand. If the spinning reserve level reaches 15%, then the expected profit varies between 9% and 20% for the same level of wind power penetration. The environmental analysis also shows a significant decrease in fuel use and CO{sub}2 emissions, assuming that wind parks are used instead of conventional power production units.