Method and system for predicting natural gas sales volume based on temperature change

The invention belongs to the technical field of natural gas data, and particularly relates to a natural gas sales prediction method and system based on temperature change. The prediction method comprises the following steps: collecting and storing historical data of air temperature and natural gas sales volume of a region where an urban gas enterprise is located; correlation analysis is conducted on the relation between the air temperature and the natural gas sales volume in the historical data; and preprocessing the data of the prediction day to obtain a daily sales non-uniform coefficient of the prediction day. According to the method, the daily nonuniformity of the natural gas sales volume is associated with the temperature by adopting a linear fitting mode, finally, each temperature interval can fit a function relationship between a daily sales volume nonuniformity coefficient and the temperature, then the temperature interval is determined according to the reference temperature of the prediction day, the