| Title |
Analysis of Power System Ramp Rate Flexibility based on Density Estimation |
| Authors |
구본길(Koo Bon-gil) ; 문희성(Heesung Moon) ; 남수철(Suchul Nam) ; 서재완(Jaewan Suh) |
| DOI |
https://doi.org/10.5370/KIEE.2023.72.11.1351 |
| Keywords |
Power System Flexibility; Ramp rate; Kernel Density Estimation; Power System Planning; Renewable Energy |
| Abstract |
This paper proposes a method to quantify ramp rate flexibility in power systems by estimating the density function of ramp rates using kernel density estimation (KDE). This method permits direct, percentage-based quantification of ramp rate flexibility and provides an intuitive comprehension of the grid's current flexibility. Using the proposed method, the ramp rate flexibility of the Korean power system in 2030 was compared to that of the Korean power system in 2020, and the impact of securing additional flexible resources on ramp rate flexibility was analyzed. The results of the analysis showed that in 2030, when the proportion of renewable energy increases, it will be necessary to secure the ramp rate with additional flexible resources, the value of which can differ depending on the power system condition and time. |