Open AccessPrimary frequency modulation characteristics of photovoltaic power station suitable for grid connection certification
Author(s) -
Changqing Yao,
Qing Yan,
Liu Zhao-dong,
Changlai Zhou,
Yuanyuan Li,
Enren Liu,
Chao Zhang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/446/4/042080
Subject(s) - photovoltaic system , frequency deviation , power (physics) , electrical engineering , automatic frequency control , grid , frequency modulation , computer science , electronic engineering , engineering , radio frequency , physics , geometry , mathematics , quantum mechanics
Photovoltaic power station can participate in the primary frequency modulation of the power system for grid connection certification. The primary frequency modulation capability of photovoltaic power station is analyzed when the light intensity changes. According to theoretical and simulation analysis, by changing the control mode, the photovoltaic power station operated by load reduction can quickly respond to the drop and increase of frequency and reduce the change of frequency after disturbance. Overall results show that the photovoltaic power station with primary frequency control can reduce the frequency of system changes, implement the support for the frequency of the system, and make corresponding adjustment to improve the safety of power grid.