A study on frequency fluctuation with ramp rate limit of wind power plants in the Japanese AGC30 model

In anticipation of the future interconnection of large-scale wind power plants, grid interconnection regulation that limits the output ramp rate limit of domestic wind power plants to "10% for 5 minutes" came into force in 2020. The authors have previously clarified the impact of the output ramp rate limit on the frequency fluctuation of the power system through numerical simulations using the EAST 10-machine System Model developed by the Institute of Electrical Engineers of Japan in 1999. However, the EAST 10-machine System Model was not necessarily suitable for steady-state frequency analysis, and further analysis using a generalized model was necessary. In this paper, we conducted a similar study using the AGC30 model which was also developed by the Institute of Electrical Engineers of Japan in 2016, a standard analysis model for frequency simulation that can simulate frequency fluctuations in more detail than the EAST 10-machine System Model, and clarified that there was no significant difference depending on whether the output ramp rate limit for wind power plants is applied or not, and that it is important to distinguish between having the function and utilization.