配电终端存在量大且分布广、故障率高、运维难度大等特点,数字孪生技术为配电终端从“被动运维”向“主动运维”转变提供了新思路。该文提出了配电终端数字孪生体的建模原则、五层建模架构和建模方法。其中,为实现数字孪生体与外部系统...配电终端存在量大且分布广、故障率高、运维难度大等特点,数字孪生技术为配电终端从“被动运维”向“主动运维”转变提供了新思路。该文提出了配电终端数字孪生体的建模原则、五层建模架构和建模方法。其中,为实现数字孪生体与外部系统的信息交互,提出基于IEC 61968规范的CIM(Common Information Model)模型的扩展方法。最后以健康评估为例,构建了基于数字孪生体的配电终端健康评估构架和信息流。研究成果可为配电终端健康评估、远程运维等具有配电自动化发展趋势的高级应用奠定模型基础。展开更多
The induction motor,which converts electrical energy into mechanical energy,has been recognized as the cornerstone of industrialization.The rotor of an induction motor can be either a squirrel cage rotor or a wound-ty...The induction motor,which converts electrical energy into mechanical energy,has been recognized as the cornerstone of industrialization.The rotor of an induction motor can be either a squirrel cage rotor or a wound-type rotor,both existing as magnetless topologies.Three-phase squirrel cage induction motors are frequently utilized in industrial drives because they are dependable,have high starting torque,are selfstarting and affordable.Single-phase induction motors,on the other hand,are commonly used for small loads such as domestic appliances in form of modest fans,pumps and electric power tools.In South Africa,there have been reports of fires and explosions resulting in live and property loss because of induction motors that have not been thoroughly tested or are incorrectly labelled in terms of ratings,electrical safety and performance.The goal of this study is targeted at preventing end-user injuries and failures caused by non-compliant induction motors,by evaluating locally manufactured/imported induction motors based on tests and evaluation from standards(IEC and SANS).The study is conducted using experimental procedures at the Explosion Prevention Technology and Rotating Machines(EPT and RM)laboratory,South African Bureau of Standards(SABS),South Africa.The main finding from the study shows differences in the nameplate characteristics of various induction motors which could have detrimental effects such as production and operational downtime in their end-use industries,at later stages.展开更多
The symposium will bring together industry leaders,policymakers,researchers and stakeholders to explore the crucial role of standards in promoting sustainable ICT practices.Standards guide the development of technolog...The symposium will bring together industry leaders,policymakers,researchers and stakeholders to explore the crucial role of standards in promoting sustainable ICT practices.Standards guide the development of technologies that minimize environmental impact and enhance energy efficiency.展开更多
To probe into the directions and difficulties of standardization discipline construction in China,China Standardization Press organized a pertinent dialogue on July 10.During the event,Yu Xinli,President of China Asso...To probe into the directions and difficulties of standardization discipline construction in China,China Standardization Press organized a pertinent dialogue on July 10.During the event,Yu Xinli,President of China Association for Standardization,was invited as the moderator.Several standardization experts including Song Mingshun,Mai Lyubo,Qiang Yi,Cao Lili,and Huang Manxue from the China Standardization Expert Committee and renowned universities and research institutes in the country were invited as guests to give their insightful views.展开更多
The theme activity of the World Standards Day 2024 in China was held in Xi'an, Shaanxi province, on October 14. Zhang Xiaogang, former ISO President, read the congratulatory message from IEC, ISO, and ITU for this...The theme activity of the World Standards Day 2024 in China was held in Xi'an, Shaanxi province, on October 14. Zhang Xiaogang, former ISO President, read the congratulatory message from IEC, ISO, and ITU for this year's World Standards Day(WSD), the theme of which is “Shared vision for a better world”. Sergio Mujica, ISO Secretary-General, and Jo Cops, IEC President, addressed the event via videos.展开更多
文摘配电终端存在量大且分布广、故障率高、运维难度大等特点,数字孪生技术为配电终端从“被动运维”向“主动运维”转变提供了新思路。该文提出了配电终端数字孪生体的建模原则、五层建模架构和建模方法。其中,为实现数字孪生体与外部系统的信息交互,提出基于IEC 61968规范的CIM(Common Information Model)模型的扩展方法。最后以健康评估为例,构建了基于数字孪生体的配电终端健康评估构架和信息流。研究成果可为配电终端健康评估、远程运维等具有配电自动化发展趋势的高级应用奠定模型基础。
基金supported in part by Explosion Prevention Technology and Rotating Machines(EPT&RM)laboratory,South African Bureau of Standards(SABS),Pretoria,South Africa.
文摘The induction motor,which converts electrical energy into mechanical energy,has been recognized as the cornerstone of industrialization.The rotor of an induction motor can be either a squirrel cage rotor or a wound-type rotor,both existing as magnetless topologies.Three-phase squirrel cage induction motors are frequently utilized in industrial drives because they are dependable,have high starting torque,are selfstarting and affordable.Single-phase induction motors,on the other hand,are commonly used for small loads such as domestic appliances in form of modest fans,pumps and electric power tools.In South Africa,there have been reports of fires and explosions resulting in live and property loss because of induction motors that have not been thoroughly tested or are incorrectly labelled in terms of ratings,electrical safety and performance.The goal of this study is targeted at preventing end-user injuries and failures caused by non-compliant induction motors,by evaluating locally manufactured/imported induction motors based on tests and evaluation from standards(IEC and SANS).The study is conducted using experimental procedures at the Explosion Prevention Technology and Rotating Machines(EPT and RM)laboratory,South African Bureau of Standards(SABS),South Africa.The main finding from the study shows differences in the nameplate characteristics of various induction motors which could have detrimental effects such as production and operational downtime in their end-use industries,at later stages.
文摘The symposium will bring together industry leaders,policymakers,researchers and stakeholders to explore the crucial role of standards in promoting sustainable ICT practices.Standards guide the development of technologies that minimize environmental impact and enhance energy efficiency.
文摘To probe into the directions and difficulties of standardization discipline construction in China,China Standardization Press organized a pertinent dialogue on July 10.During the event,Yu Xinli,President of China Association for Standardization,was invited as the moderator.Several standardization experts including Song Mingshun,Mai Lyubo,Qiang Yi,Cao Lili,and Huang Manxue from the China Standardization Expert Committee and renowned universities and research institutes in the country were invited as guests to give their insightful views.
文摘The theme activity of the World Standards Day 2024 in China was held in Xi'an, Shaanxi province, on October 14. Zhang Xiaogang, former ISO President, read the congratulatory message from IEC, ISO, and ITU for this year's World Standards Day(WSD), the theme of which is “Shared vision for a better world”. Sergio Mujica, ISO Secretary-General, and Jo Cops, IEC President, addressed the event via videos.
