The N-1 criterion is a critical factor for ensuring the reliable and resilient operation of electric power distribution networks.However,the increasing complexity of distribution networks and the associated growth in ...The N-1 criterion is a critical factor for ensuring the reliable and resilient operation of electric power distribution networks.However,the increasing complexity of distribution networks and the associated growth in data size have created a significant challenge for distribution network planners.To address this issue,we propose a fast N-1 verification procedure for urban distribution networks that combines CIM file data analysis with MILP-based mathematical modeling.Our proposed method leverages the principles of CIM file analysis for distribution network N-1 analysis.We develop a mathematical model of distribution networks based on CIM data and transfer it into MILP.We also take into account the characteristics of medium voltage distribution networks after a line failure and select the feeder section at the exit of each substation with a high load rate to improve the efficiency of N-1 analysis.We validate our approach through a series of case studies and demonstrate its scalability and superiority over traditional N-1 analysis and heuristic optimization algorithms.By enabling online N-1 analysis,our approach significantly improves the work efficiency of distribution network planners.In summary,our proposed method provides a valuable tool for distribution network planners to enhance the accuracy and efficiency of their N-1 analyses.By leveraging the advantages of CIM file data analysis and MILP-based mathematical modeling,our approach contributes to the development of more resilient and reliable electric power distribution networks.展开更多
Geographical Information System (GIS) can be considered the core of the Interactive Facilities Management Environment (iFaME) framework in managing different facilities on the building bases. This study aims at buildi...Geographical Information System (GIS) can be considered the core of the Interactive Facilities Management Environment (iFaME) framework in managing different facilities on the building bases. This study aims at building a comprehensive geodatabase for different elements of infrastructure facilities and services on the building bases for a selected number of schools and developing a GIS-based iFaME interactive application to manage different facilities at the school level in Kuwait. The iFaME is a two-dimensional/three-dimensional (2D/3D) desktop application. It is intended to take planners, decision makers, and maintenance experts inside the building to provide an interactive GIS platform to manage, visualize, query, maintain, and update the database related to school assets and facilities. The Autodesk Revit software was used to produce 3D building information models (BIM) for the selected schools. It provides accurate geometrical representation of the school building elements in an integrated data environment. The iFaME application is integrated with the Revit BIM models and the STAR-APIC Elyx 3D software solution. With the development of the iFaME applications, the facility managers in the MoE could establish greater control over the space allocation and management, asset management, emergency planning, and other areas of facility management. The school managers and maintenance engineers are considered among the most beneficiaries from this application. The school managers will monitor the maintenance activities all the time, while the maintenance engineers will use the application as a container for maintenance orders, and on the same time to document what they accomplished on daily basis. The iFaME application will reduce the maintenance cost of school assets and facilities in addition to increase their efficiency.展开更多
基金supported by the National Natural Science Foundation of China(52207105)。
文摘The N-1 criterion is a critical factor for ensuring the reliable and resilient operation of electric power distribution networks.However,the increasing complexity of distribution networks and the associated growth in data size have created a significant challenge for distribution network planners.To address this issue,we propose a fast N-1 verification procedure for urban distribution networks that combines CIM file data analysis with MILP-based mathematical modeling.Our proposed method leverages the principles of CIM file analysis for distribution network N-1 analysis.We develop a mathematical model of distribution networks based on CIM data and transfer it into MILP.We also take into account the characteristics of medium voltage distribution networks after a line failure and select the feeder section at the exit of each substation with a high load rate to improve the efficiency of N-1 analysis.We validate our approach through a series of case studies and demonstrate its scalability and superiority over traditional N-1 analysis and heuristic optimization algorithms.By enabling online N-1 analysis,our approach significantly improves the work efficiency of distribution network planners.In summary,our proposed method provides a valuable tool for distribution network planners to enhance the accuracy and efficiency of their N-1 analyses.By leveraging the advantages of CIM file data analysis and MILP-based mathematical modeling,our approach contributes to the development of more resilient and reliable electric power distribution networks.
文摘Geographical Information System (GIS) can be considered the core of the Interactive Facilities Management Environment (iFaME) framework in managing different facilities on the building bases. This study aims at building a comprehensive geodatabase for different elements of infrastructure facilities and services on the building bases for a selected number of schools and developing a GIS-based iFaME interactive application to manage different facilities at the school level in Kuwait. The iFaME is a two-dimensional/three-dimensional (2D/3D) desktop application. It is intended to take planners, decision makers, and maintenance experts inside the building to provide an interactive GIS platform to manage, visualize, query, maintain, and update the database related to school assets and facilities. The Autodesk Revit software was used to produce 3D building information models (BIM) for the selected schools. It provides accurate geometrical representation of the school building elements in an integrated data environment. The iFaME application is integrated with the Revit BIM models and the STAR-APIC Elyx 3D software solution. With the development of the iFaME applications, the facility managers in the MoE could establish greater control over the space allocation and management, asset management, emergency planning, and other areas of facility management. The school managers and maintenance engineers are considered among the most beneficiaries from this application. The school managers will monitor the maintenance activities all the time, while the maintenance engineers will use the application as a container for maintenance orders, and on the same time to document what they accomplished on daily basis. The iFaME application will reduce the maintenance cost of school assets and facilities in addition to increase their efficiency.
