Natural gas network dynamic state estimation method considering natural gas pipeline dynamic characteristics

The invention relates to a natural gas network dynamic state estimation method considering dynamic characteristics of a natural gas pipeline, and belongs to the technical field of operation and control of comprehensive energy systems. The invention discloses a natural gas network dynamic state estimation method. A natural gas network state estimation model is solved by establishing a target function of natural gas network dynamic state estimation, establishing a compressor state quantity constraint, a natural gas pipeline state quantity constraint and a natural gas network topology constraintand utilizing a Lagrange method or an interior point method, and a natural gas network dynamic state estimation result is obtained. According to the natural gas network dynamic state estimation method, the natural gas network topology constraint is considered, linearization of the pipeline pressure constraint is achieved in a frequency domain pipeline pressure constraint mode, and the real-time, reliable, consistent and c