The invention relates to an optimal operation method for a multi-energy complementary
system, which includes the following steps: S1, carrying out interval description on distributed energy and cooling-heating-
power equipment based on the structure of a multi-energy complementary
system; S2, establishing a
system coupling model according to the interval description result; S3, establishing a multi-objective function considering environmental, economic and energy factors, wherein the multi-objective function includes the operation cost and the
pollution emission cost; S4, acquiring constraintsused to ensure interval balance, wherein the constraints include
electric power balance, cooling-heating-
power equipment balance and grid interaction conversion constraints; and S5, solving the systemcoupling model based on the interval theory and affine operation to obtain a final solution set. Compared with the prior art,
coupling modeling is carried out on the energy devices of the system, andthe model is solved based on the interval theory and affine operation, which can reduce the dynamic
impact of prediction error and energy fluctuation on the system, realize optimal allocation of resources and improve the energy utilization efficiency of the multi-energy complementary system.