抄録
A large-scale installation of a photovoltaic power generation system (PV system) may cause some diculties in the operation of electric power systems. Taking into account a smoothing effect of power outputs of PV systems by dispersed installation, this paper discusses the LFC (Load Frequency Control) capacity for power output fluctuation of PV systems based on the insolation data simultaneously observed at 5 points around Nagoya, Japan. The main results are (1) the frequency deviation might not exceed the tolerance (0.05Hz)when the installed PV system is 2% of system capacity, which is Japan’s target value toward 2010, (2) when the larger capacity of PV system is installed, the frequency deviation would be larger than 0.05Hz, and the capacity of LFC generator must be increased, (3) the frequency deviation due to the installation of PV system might be larger in holiday with smaller electricity demand than in weekday.
