TY - GEN
T1 - Frequency Regulation in an Isolated Grid with a High Penetration of Renewables - the Faroe Islands
AU - Tróndheim, Helma Maria
AU - Pillai, Jayakrishnan Radhakrishna
AU - Nielsen, Terji
AU - Bak, Claus Leth
AU - Silva, Filipe Miguel Faria da
AU - Niclasen, Bárður Arnsteinsson
PY - 2020
Y1 - 2020
N2 - In 2030 the electricity production in the isolated power system of the Faroe Islands, will be 100% renewable, if the set vision is met. Moreover, both the heating and transport sectors will be 100% electrified. This means that the installed renewable generation will be increased significantly. The generation from new wind farms and solar plants will have to replace the electricity currently generated by fossil fuelled generators. However, these inverter-based technologies typically lack the capability to participate in stabilising the system frequency during a power deficit. This means, that if no alternative initiatives are taken, the 6 existing hydro power plants will be the only units regulating the frequency. This paper studies the frequency behaviour in today’s system and in 2030, and analyses whether the hydro power plants will be enough to regulate the frequency, or if alternative initiatives are a necessity. The two power systems have been simulated under normal conditions, with a sudden load decrease and with a line outage. According to the simulation results the frequency will worsen in 2030 compared to today, but it will still stay within today’s frequency thresholds. The simulation results of today’s system also show a significantly better response than the actual grid frequency. The greatest variations in the simulations of today’s system under normal conditions are 30 mHz, while the actual grid frequency typically varies between 49.5 Hz and 50.5 Hz. The model built for this study is a simplified and aggregated version with generic governors, and thus, it is concluded that the model should be developed further, in order to retrieve more realistic results from the simulations.
AB - In 2030 the electricity production in the isolated power system of the Faroe Islands, will be 100% renewable, if the set vision is met. Moreover, both the heating and transport sectors will be 100% electrified. This means that the installed renewable generation will be increased significantly. The generation from new wind farms and solar plants will have to replace the electricity currently generated by fossil fuelled generators. However, these inverter-based technologies typically lack the capability to participate in stabilising the system frequency during a power deficit. This means, that if no alternative initiatives are taken, the 6 existing hydro power plants will be the only units regulating the frequency. This paper studies the frequency behaviour in today’s system and in 2030, and analyses whether the hydro power plants will be enough to regulate the frequency, or if alternative initiatives are a necessity. The two power systems have been simulated under normal conditions, with a sudden load decrease and with a line outage. According to the simulation results the frequency will worsen in 2030 compared to today, but it will still stay within today’s frequency thresholds. The simulation results of today’s system also show a significantly better response than the actual grid frequency. The greatest variations in the simulations of today’s system under normal conditions are 30 mHz, while the actual grid frequency typically varies between 49.5 Hz and 50.5 Hz. The model built for this study is a simplified and aggregated version with generic governors, and thus, it is concluded that the model should be developed further, in order to retrieve more realistic results from the simulations.
KW - Isolated power system
KW - Frequency Regulation
KW - Renewable Energy
KW - Inverter-based generation
M3 - Article in proceeding
BT - 2020 Cigre Session
PB - CIGRE (International Council on Large Electric Systems)
T2 - CIGRE 2020 e-session
Y2 - 24 August 2020 through 3 September 2020
ER -