IMPACT STATEMENT OF DISTRIBUTION NETWORK BY FLUCTUATION OF PV SYSTEM OUTPUT BY USING FREQUENCY ANALYSIS

摘要

An output of PV systems has a short-term fluctuation due to weather fluctuation. With high connection densities of PV system in the distribution network, this might cause to degrade electric power quality e.g. voltage fluctuation and frequency variation. Recently, rapid growing end expanding of the PV systems in the electric power systems make a large benefit to reduce environmental problems. Therefore, the necessity for evaluating the influence that fluctuation of PV system output exerts on the distribution network has risen. In this paper, the impact statement method of distribution network by the fluctuation of PV system output by using frequency analysis is described. The impact statement of distribution network by the fluctuation of PV system could be analyzed in every frequency bands by this evaluation method.