The application discloses a GFM / GFL
hybrid control collaborative
optimization system and method for weak grid high-penetration
new energy grid connection, relates to the technical field of
new energy grid connection control, and a state acquisition and
system strength evaluation module is used for collecting operation state data of a
grid connection point in real time, estimating background impedance and calculating
system strength; a two-stage distribution robust scheduling module in an upper layer performs multi-objective scheduling, and first-stage decision variables are obtained; a middle-layer safety
reinforcement learning setting module generates proportion correction and control parameter actions, and real-time proportion coefficients are obtained; a master-slave
hybrid control execution module executes master-slave GFM / GFL
hybrid control based on the real-time proportion coefficients, a GFM channel provides a reference
voltage reference, a GFL channel generates a correction current and maps the correction current into a correction
voltage through a
virtual impedance; and a safety guardian and
rollback module switches
system control
modes. The application simultaneously considers economy, stability and
power quality, and improves
controllability and
engineering deployment reliability under an extreme weak grid working condition.