The application discloses a
simulation analysis method and device based on an RTDS large
power grid equivalent model, and is applied to RTDS and a DC
hybrid large
power grid, and the method comprises the following steps: S1, a first
bus with a
new energy unit is randomly acquired, and the first
bus is put into a pre-set task
queue; S2, based on the first
bus and the task
queue, an equivalent modeling is performed on the
new energy unit in combination with a pre-set
voltage threshold value, so that a
power grid equivalent model is obtained; S3, it is judged whether all nodes in the task
queue have been traversed; if not, the step S2 is returned to be executed; and S4, a
simulation analysis instruction is received,
simulation analysis is performed by using the
equivalent model, and a simulation analysis result is obtained. Based on the RTDS platform, the establishment and simulation analysis of the large power grid equivalent model are realized, and under the condition of high proportion of
new energy penetration at the present stage, a large amount of simulation resources is saved.