自控网络是现代自动化系统的核心和基础,面对众多不同体系结构的自控网络,综合分析和研究自控网络的本质特征是非常重要的。通过对自控网络通信协议、信息模型、互操作模式和系统集成方式的抽象分析和研究,揭示了自控网络的本质特征和...自控网络是现代自动化系统的核心和基础,面对众多不同体系结构的自控网络,综合分析和研究自控网络的本质特征是非常重要的。通过对自控网络通信协议、信息模型、互操作模式和系统集成方式的抽象分析和研究,揭示了自控网络的本质特征和基本框架,为开发和应用不同体系结构自控网络提供了一般性的分析和研究方法,同时也分析和研究了现代 IT 技术在自控网络中的应用方式和相关技术,并说明了自控网络的发展趋势。展开更多
The occurrence of liquid condensation in natural gas accounts for new challenges during the interoperability between transmission networks,where condensation would lead to higher pressure drops,lower line capacity and...The occurrence of liquid condensation in natural gas accounts for new challenges during the interoperability between transmission networks,where condensation would lead to higher pressure drops,lower line capacity and may cause safety problem.A successful case of hydrocarbon dew point(HCDP)analysis is demonstrated during the mixing of natural gases in the transmission pipeline.Methods used to predict the HCDP are combined with equations of state(EOS)and characterization of C6+heavy components.Predictions are compared with measured HCDP with different concentrations of mixed gases at a wide range of pressure and temperature scopes.Software named"PipeGasAnalysis"is developed and helps to systematic analyze the condensation problem,which will provide the guidance for the design and operation of the network.展开更多
文摘自控网络是现代自动化系统的核心和基础,面对众多不同体系结构的自控网络,综合分析和研究自控网络的本质特征是非常重要的。通过对自控网络通信协议、信息模型、互操作模式和系统集成方式的抽象分析和研究,揭示了自控网络的本质特征和基本框架,为开发和应用不同体系结构自控网络提供了一般性的分析和研究方法,同时也分析和研究了现代 IT 技术在自控网络中的应用方式和相关技术,并说明了自控网络的发展趋势。
基金Project(2011ZX05026-004-03)supported by the Key National Science and Technology Specific Program,ChinaProject(NCET-12-0969)supported by the Program for New Century Excellent Talents in University,China+1 种基金Project(51104167)supported by the National Natural Science Foundation of ChinaProject(BJ-2011-02)supported by the Research Funds of China University of Petroleum-Beijing
文摘The occurrence of liquid condensation in natural gas accounts for new challenges during the interoperability between transmission networks,where condensation would lead to higher pressure drops,lower line capacity and may cause safety problem.A successful case of hydrocarbon dew point(HCDP)analysis is demonstrated during the mixing of natural gases in the transmission pipeline.Methods used to predict the HCDP are combined with equations of state(EOS)and characterization of C6+heavy components.Predictions are compared with measured HCDP with different concentrations of mixed gases at a wide range of pressure and temperature scopes.Software named"PipeGasAnalysis"is developed and helps to systematic analyze the condensation problem,which will provide the guidance for the design and operation of the network.
