Study on Steady-state Calculation Method for Long-distance Gas Transportation Pipelines

A steady-stage calculation model for long-distance gas transportation pipelines has been established.A high-precision steady-state flow equation is adopted as the steady-stage model of pipelines in order to guarantee an accurate result.The initial value of pipeline pressure is calculated by means of the theory of minimum frictional loss,which can solve the problem of inefficient solution of Newton iteration induced by inappropriate initial value.The steady-state calculation for gas pipelines in Shanxi Province indicates that the model is accurate and efficient.