Analysis on the safety situation of natural gas resources in China

We establish the safety evaluation index system of natural gas resource in China through literature review, using cluster analysis and grey correlation analysis to optimize the established evaluation index system, using entropy method to measure China's natural gas safety index. The PSO-SVM model was used to analyze the natural gas security situation in 2020 by setting up three scenarios of high, benchmark and low scenario. The results show that:(1) China's natural gas is in an unsafe degree, and the natural gas safety index shows the trend of the first fluctuation and then the slow rise in the period of evaluation; (2) different natural gas utilization policies and supporting energy policies can significantly affect the safe development of natural gas in China. This paper suggests that China government should strengthen its intervention in energy policies such as natural gas, in order to better use the above policies and measures to improve the efficiency of natural gas energy utilization, improve the energy structure and ensure the smooth operation of the national economy.