For a specific environment gas pipe network and terminal equipment

the operation of the terminal strategy depends on the load characteristics. Study on the best operating strategy of different load characteristics has a great significance to energy-saving. Based on the periodicity of daily load and peak and valley price

the optimization mathematical model is established and the universal optimization criterion is derived. In addition

the optimization scheme of three typical working conditions is obtained with the dynamic simulation system

and also the universal optimal operation scheme of day and month is obtained. The load characteristic curve equation is derived by analyzing the field data

which allows of the optimization of each kinds of load characteristic. The calculation shows that the optimal operation scheme can save up to 12% of the daily cost compared with the on-site operation strategy. According to the typical monthly load distribution in summer

the optimal scheme can save 6.3% per month compared with the on-site strategy.