Natural gas path modeling method for operation control of comprehensive energy system
An integrated energy system and operation control technology, applied in special data processing applications, design optimization/simulation, etc., can solve the problems of diverse applications of difficult-to-integrate energy systems, the inability to unify analysis methods, and the lack of a complete and unified theoretical framework.
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[0081] The natural gas path modeling method for the operation control of the integrated energy system proposed by the present invention includes the following steps:
[0082] (1) Establishing the pipeline model of the natural gas path, including the following steps:
[0083] (1-1) Establish the mass conservation equation and momentum conservation equation for the one-dimensional flow process of natural gas in the pipeline:
[0084]
[0085]
[0086] In the formula: ρ, v, and p are the density, flow velocity, and pressure of natural gas, respectively; λ, D, and θ are the friction coefficient, inner diameter, and inclination angle of the pipeline, respectively, provided by the natural gas pipeline management party, g is the acceleration of gravity, t, and x time and space, respectively;
[0087] (1-2) Two approximations are introduced into the momentum conservation equation in step (1-1): one is to ignore the convection term, namely The second is to perform incremental ...
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