摘要
现阶段我国天然气贸易交接过程中,计量方式较多采用体积计量,这种计量方式不仅不能满足天然气按质论价、优质优价的商品交易原则,而且需要依靠价格昂贵的色谱仪分析来实现。天然气能量计量能够避免体积计量所带来的缺陷,同时计量方式又具有较高准确性,越来越成为世界上各个国家天然气贸易结算的方式。基于局部天然气管网建立的天然气能量计量的赋值算法,对1周内天然气能量进行了预测,并将预测值与测量值进行了对比,预测值与测量值的相对误差控制在1.8440%左右,表明所建立的赋值算法能够较好地预测在一定时间内的天然气热值。
In the current process of natural gas custody transfer in our country,the measurement method is mostly volume measurement.This measurement method not only cannot meet the commodity transaction principle of natural gas price based on quality,high quality and good price,but also needs to rely on expensive chromatograph analysis.Natural gas energy metering can avoid the defects caused by volume metering,and at the same time,the metering method has high accuracy,and it has increasingly become the method of natural gas trade settlement in various countries in the world.Based on the assignment algorithm of natural gas energy measurement established by the local natural gas pipeline network,the natural gas energy within one week is predicted,and the predicted value is compared with the measured value.The relative error between the predicted value and the measured value is controlled at about 1.8440%,indicating that the established assignment algorithm can predict the calorific value of natural gas within a certain period of time.
作者
吕海舟
杨敬东
刘婉莹
葛贤福
LÜ Hai-zhou;YANG Jing-dong;LIU Wan-ying;GE Xian-fu(Zhejiang Energy Natural Gas Group Co.Ltd,Hangzhou,Zhejiang 310007,China;Zhejiang Energy Technology Research Institute Co.Ltd,Hangzhou,Zhejiang 310003,China;Zhejiang Mechanical and Electrical Group Co.Ltd,Hangzhou,Zhejiang 310020,China;Zhejiang Key Laboratory of Flow Metering Technology Research,China Jiliang University,Hangzhou,Zhejiang 310018,China)
出处
《计量学报》
CSCD
北大核心
2023年第1期80-87,共8页
Acta Metrologica Sinica
基金
国家自然科学基金(12102418)
浙江省自然科学基金(Q21A020020)
浙江省科技计划项目(2021C01099)
浙江省属高校基本科研业务费专项(200006)。
关键词
计量学
天然气
能量计量
赋值算法
溯源
metrology
natural gas
energy metering
assignment algorithm
traceability
