In order to improve the safety management of urban gas transmission and distribution system, failure mode and effects analysis （FMEA） was used to construct the reliability analysis system of the pipeline network. To...In order to improve the safety management of urban gas transmission and distribution system, failure mode and effects analysis （FMEA） was used to construct the reliability analysis system of the pipeline network. To solve the problem of subjectivity and uncertainty of the multi-expert decision making, the correlation operator was introduced into the calculation of the risk priority number （RPN）. Using FMEA along with weight analysis and expert investigation approach, the FMEA evaluation table was given, including five failure modes, risk priority numbers, failure causes and effects, as well as corrective actions. The results show that correlation operator can directly process the linguistic terms and quantify the priority of the risks.展开更多
To improve the economic efficiency of urban integrated energy systems(UIESs)and mitigate day-ahead dispatch uncertainty,this paper presents an interconnected UIES and transmission system(TS)model based on distributed ...To improve the economic efficiency of urban integrated energy systems(UIESs)and mitigate day-ahead dispatch uncertainty,this paper presents an interconnected UIES and transmission system(TS)model based on distributed robust optimization.First,interconnections are established between a TS and multiple UIESs,as well as among different UIESs,each incorporating multiple energy forms.The Bregman alternating direction method with multipliers(BADMM)is then applied to multi-block problems,ensuring the privacy of each energy system operator(ESO).Second,robust optimization based on wind probability distribution information is implemented for each ESO to address dispatch uncertainty.The column and constraint generation(C&CG)algorithm is then employed to solve the robust model.Third,to tackle the convergence and practicability issues overlooked in the existing studies,an external C&CG with an internal BADMM and corresponding acceleration strategy is devised.Finally,numerical results demonstrate that the adoption of the proposed model and method for absorbing wind power and managing its uncertainty results in economic benefits.展开更多
燃气是人们生产和生活中不可或缺的要素,而燃气输配运行过程中燃气管网在燃气系统的设计、建设和维护中扮演着至关重要的角色。城镇燃气的高速发展,对燃气管网的运行管理提出了更高的要求,对精细化、科学化、规范化管理需求也不断提升...燃气是人们生产和生活中不可或缺的要素,而燃气输配运行过程中燃气管网在燃气系统的设计、建设和维护中扮演着至关重要的角色。城镇燃气的高速发展,对燃气管网的运行管理提出了更高的要求,对精细化、科学化、规范化管理需求也不断提升。为满足这些需求,地理信息系统(Geographic Information System,GIS)在城镇燃气地下管网中得到了广泛应用。运用空间数据转换处理系统FME(Feature Manipulate Engine)进行数据建库和数据转换,ArcMAP用于燃气管道设施空间数据处理,GeoPandas结合Sklearn程序包实现巡检网格制作及动态分析可实现地下燃气管道的精细化巡检,进一步提升输配管道设施的运行管理水平,降低事故发生,提高管网运行效率和安全性。展开更多
文摘In order to improve the safety management of urban gas transmission and distribution system, failure mode and effects analysis （FMEA） was used to construct the reliability analysis system of the pipeline network. To solve the problem of subjectivity and uncertainty of the multi-expert decision making, the correlation operator was introduced into the calculation of the risk priority number （RPN）. Using FMEA along with weight analysis and expert investigation approach, the FMEA evaluation table was given, including five failure modes, risk priority numbers, failure causes and effects, as well as corrective actions. The results show that correlation operator can directly process the linguistic terms and quantify the priority of the risks.
基金supported by the Science and Technology Project of State Grid Corporation of China(No.5108-202299259A-1-0-ZB)。
文摘To improve the economic efficiency of urban integrated energy systems(UIESs)and mitigate day-ahead dispatch uncertainty,this paper presents an interconnected UIES and transmission system(TS)model based on distributed robust optimization.First,interconnections are established between a TS and multiple UIESs,as well as among different UIESs,each incorporating multiple energy forms.The Bregman alternating direction method with multipliers(BADMM)is then applied to multi-block problems,ensuring the privacy of each energy system operator(ESO).Second,robust optimization based on wind probability distribution information is implemented for each ESO to address dispatch uncertainty.The column and constraint generation(C&CG)algorithm is then employed to solve the robust model.Third,to tackle the convergence and practicability issues overlooked in the existing studies,an external C&CG with an internal BADMM and corresponding acceleration strategy is devised.Finally,numerical results demonstrate that the adoption of the proposed model and method for absorbing wind power and managing its uncertainty results in economic benefits.
文摘燃气是人们生产和生活中不可或缺的要素,而燃气输配运行过程中燃气管网在燃气系统的设计、建设和维护中扮演着至关重要的角色。城镇燃气的高速发展,对燃气管网的运行管理提出了更高的要求,对精细化、科学化、规范化管理需求也不断提升。为满足这些需求,地理信息系统(Geographic Information System,GIS)在城镇燃气地下管网中得到了广泛应用。运用空间数据转换处理系统FME(Feature Manipulate Engine)进行数据建库和数据转换,ArcMAP用于燃气管道设施空间数据处理,GeoPandas结合Sklearn程序包实现巡检网格制作及动态分析可实现地下燃气管道的精细化巡检,进一步提升输配管道设施的运行管理水平,降低事故发生,提高管网运行效率和安全性。
