Multi-partition power grid power mutual aid collaborative optimization operation method based on back-to-back converter

The invention discloses a multi-partition power grid power mutual aid collaborative optimization operation method based on a back-to-back converter, and the method comprises the steps: (1) constructing a distributed robust optimization framework, in the framework, decomposing the scheduling problem of a back-to-back flexible AC/DC interconnection system through employing an analysis target cascade ATC technology, and obtaining a distributed robust optimization model; the problem is decomposed into a main problem of an upper-layer control center and a sub-problem of a lower-layer control area; (2) determining an objective function and a constraint condition of an upper layer main problem; (3) determining an objective function and a constraint condition of a lower-layer sub-problem; and (4) solving an upper-layer main problem and a lower-layer sub-problem in the distributed robust optimization framework by adopting an IAIC algorithm, and determining a line power transmission plan and a scheduling strategy of ea