New energy cluster operation safety domain online evaluation method

Abstract

The present application relates to the technical field of power system control, and discloses a new energy cluster operation safety domain online evaluation method, comprising: S1, setting active power output of each new energy station in the new energy cluster as a free variable, and setting a safety constraint threshold; S2, calculating power ramping rate of each station in a prediction period, and adaptively discretizing each free variable based on the power ramping rate; S3, performing multiple safety constraint checks on each operation point in the operation point sample set in parallel, and screening out feasible operation points; S4, mapping all the screened feasible operation points to a multi-dimensional state space, extracting boundary points by using a convex hull algorithm, and fitting to form a closed convex polyhedron model; and S5, evaluating theoretical maximum output of the new energy cluster, and determining comprehensive maximum sending capacity of the new energy cluster in combination with a transmission congestion checking result of a key section. The present application has the advantages of accurately depicting a new energy cluster safety operation boundary and quantifying new energy sending capacity.

Images