基于模糊控制方法的加气站甲烷扩散模型选择

加气站在正常营运以及储存运输过程中会产生泄漏事故，准确选择扩散模型模拟可有效地寻找扩散源和模拟扩散。比较各种扩散模型特征，选择适用于加气站甲烷气体的扩散模型作为模型库，选取关键参数作为输入量，利用Matlab中的模糊控制箱（fuzzy）设计出气体选择模糊控制选择器。利用中国气象局综合观测培训实习基地数据对其附近的CNG加气站进行仿真实验，结果表明:利用模糊控制的方法可实现对气体扩散模型的选择，有效选择合适扩散模型；在不同温度风速、风向变化率情况下，模型选择会有突变，选择最优模型模拟扩散最佳；南京加气站甲烷泄漏气体扩散模型选择呈现出明显的季节特征，冬季主要为静风扩散模型，夏季以高斯扩散模型和Sutton模型为主。

Selection of methane diffusion model in gas station based on fuzzy control method

Gas stations will leak during normal operation，storage and transportation.Accurate selection of diffusion model simulation can effectively find diffusion sources and simulate diffusion.Comparing the characteristics of various diffusion models，the diffusion model suitable for the methane gas in the gas station was selected as the model library，and the key parameters were selected as the input quantity，and the fuzzy control box was designed by using the fuzzy control box in Matlab.Using the data of the comprehensive observation training base of China Meteorological Administration to carry out simulation experiments on its nearby CNG filling station.The results showed that:The fuzzy control method can be used to select the gas diffusion model and effectively select the appropriate diffusion model；Under different temperature，wind speed and wind direction change rate，the model selection will be abrupt，and the optimal model is selected to simulate the best diffusion；The selection of methane leakage gas diffusion model in Nanjing gas station shows obvious seasonal characteristics.The winter was mainly the static wind diffusion model，and the summer was dominated by Gaussian diffusion model and Sutton model.