Rapid calculation method for optimal energy flow of electricity-gas combined system

The invention relates to the technical field of electricity-gas interconnection, and particularly discloses an electricity-gas combined system optimal energy flow rapid calculation method, which specifically comprises the following steps: S1, obtaining basic information of a power grid and basic information of a gas grid; s2, establishing a power grid continuous linearization model; s3, establishing a gas network continuous linearization model; s4, establishing an electricity-gas combined continuous linearization optimal energy flow model; and S5, solving the power-gas combined system optimal energy flow continuous linearization model in the step S4, and obtaining an optimal solution. According to the method, the calculation burden is greatly reduced, linear processing is carried out on the original nonlinear electricity-gas combined constraint based on the Taylor series principle, the network loss of a power grid in an original model and the compressor gas network loss in a gas network are fully guaranteed,