Conventional maintenance mode for the traction power supply system(TPSS)is to perform scheduled regular maintenance activities for power supply equipment,while such maintenance mode may result in undue maintenance tas...Conventional maintenance mode for the traction power supply system(TPSS)is to perform scheduled regular maintenance activities for power supply equipment,while such maintenance mode may result in undue maintenance tasks and low efficiency due to different degradation processes of different sorts of equipment.To address this problem,this paper introduces a preventive opportunistic maintenance(POM)method for TPSS based on equipment reliability.Firstly,a POM model is established by considering the equipment reliability degradation process based on Weibull distribution.Then,by considering the total power outage time in the planned operation cycle of TPSS as the optimization objective,the optimal maintenance scheme of TPSS is formulated by iterative method of maintenance strategies.The proposed method is verified by introducing practical maintenance strategies and fault record data of the traction transformer,circuit breaker and disconnector in an actual TPSS of a railway administration.Results show that the presented method can make full use of the existing fault data to develop a POM scheme for TPSS.It can improve maintenance efficiency and reduce power outage time,providing guidance to formulate scientific maintenance strategies for TPSS.展开更多
Defined as total productive maintenance carried out by all cooperators in Supply Chain, Total Operational Maintenance (TOM) focuses on adapting to collaborative business environment in virtue of Internet & Intrane...Defined as total productive maintenance carried out by all cooperators in Supply Chain, Total Operational Maintenance (TOM) focuses on adapting to collaborative business environment in virtue of Internet & Intranet. It focuses on the managerial ideology of embedded with Quick Response (QR),Total Productive Maintenance (TPM) and Supply Chain. And the theoretical architecture and implementation is also described. It offers emphatically that it is necessary to exceed competitive advantage of the enterprises by optimizing reliability, empowerment and Overall Facilities Effectiveness (OFE) applying TOM together into the strategic improvement plan.展开更多
With the acceleration of urbanization,the demand for water supply and drainage pipe networks has increased significantly.In the planning of urban construction,it is necessary to optimize the design of the water supply...With the acceleration of urbanization,the demand for water supply and drainage pipe networks has increased significantly.In the planning of urban construction,it is necessary to optimize the design of the water supply and drainage system pipe network to effectively save energy while providing residents with more accessible water resources.Therefore,the municipal water supply and drainage system and the water transmission methods should be designed according to the geographical conditions of the city.In this paper,we mainly analyze the design of municipal water supply and drainage systems and the selection of water transmission methods.Besides,the optimization of the water supply and drainage network zoning process and pipe network maintenance is also discussed,so as to provide a reference for municipal water supply and drainage work.展开更多
Maintenance plays an important role in acquiring cost and service advantage for an enterprise. A supply chain-oriented e-maintenance management mode is presented as a new thought on equipment maintenance on the basis ...Maintenance plays an important role in acquiring cost and service advantage for an enterprise. A supply chain-oriented e-maintenance management mode is presented as a new thought on equipment maintenance on the basis of analyzing the importance of maintenance and the characteristics of current maintenance modes. The mode allies personnel and organizations related to plant in order to construct the dynamic alliance of failure diagnosis and maintenance; through optimized deployment of maintenance resources and management of maintenance flow, the maximization of maintenance profit is realized. This paper analyzes the current multi-agent technology, and multi- agent technology is adopted to construct resource negotiation and a problem-resolving negotiation mechanism in an e-maintenance supply chain. At the same time, an agent negotiation process of resource deployment and harmony is analyzed. Finally, the key technologies realizing e-maintenance based on a supply chain environment are analyzed, which can realize the coordination, effectiveness and agility of an e-maintenance supply chain.展开更多
基金the National Natural Science Foundation of China under Grant(51907166)the Science and Technology Project of CHINA RAILWAY under Grant(2017J001-F&N2018G023)the Sichuan Science and Technology Program under Grant(2018GZ0020).
文摘Conventional maintenance mode for the traction power supply system(TPSS)is to perform scheduled regular maintenance activities for power supply equipment,while such maintenance mode may result in undue maintenance tasks and low efficiency due to different degradation processes of different sorts of equipment.To address this problem,this paper introduces a preventive opportunistic maintenance(POM)method for TPSS based on equipment reliability.Firstly,a POM model is established by considering the equipment reliability degradation process based on Weibull distribution.Then,by considering the total power outage time in the planned operation cycle of TPSS as the optimization objective,the optimal maintenance scheme of TPSS is formulated by iterative method of maintenance strategies.The proposed method is verified by introducing practical maintenance strategies and fault record data of the traction transformer,circuit breaker and disconnector in an actual TPSS of a railway administration.Results show that the presented method can make full use of the existing fault data to develop a POM scheme for TPSS.It can improve maintenance efficiency and reduce power outage time,providing guidance to formulate scientific maintenance strategies for TPSS.
文摘Defined as total productive maintenance carried out by all cooperators in Supply Chain, Total Operational Maintenance (TOM) focuses on adapting to collaborative business environment in virtue of Internet & Intranet. It focuses on the managerial ideology of embedded with Quick Response (QR),Total Productive Maintenance (TPM) and Supply Chain. And the theoretical architecture and implementation is also described. It offers emphatically that it is necessary to exceed competitive advantage of the enterprises by optimizing reliability, empowerment and Overall Facilities Effectiveness (OFE) applying TOM together into the strategic improvement plan.
文摘With the acceleration of urbanization,the demand for water supply and drainage pipe networks has increased significantly.In the planning of urban construction,it is necessary to optimize the design of the water supply and drainage system pipe network to effectively save energy while providing residents with more accessible water resources.Therefore,the municipal water supply and drainage system and the water transmission methods should be designed according to the geographical conditions of the city.In this paper,we mainly analyze the design of municipal water supply and drainage systems and the selection of water transmission methods.Besides,the optimization of the water supply and drainage network zoning process and pipe network maintenance is also discussed,so as to provide a reference for municipal water supply and drainage work.
文摘Maintenance plays an important role in acquiring cost and service advantage for an enterprise. A supply chain-oriented e-maintenance management mode is presented as a new thought on equipment maintenance on the basis of analyzing the importance of maintenance and the characteristics of current maintenance modes. The mode allies personnel and organizations related to plant in order to construct the dynamic alliance of failure diagnosis and maintenance; through optimized deployment of maintenance resources and management of maintenance flow, the maximization of maintenance profit is realized. This paper analyzes the current multi-agent technology, and multi- agent technology is adopted to construct resource negotiation and a problem-resolving negotiation mechanism in an e-maintenance supply chain. At the same time, an agent negotiation process of resource deployment and harmony is analyzed. Finally, the key technologies realizing e-maintenance based on a supply chain environment are analyzed, which can realize the coordination, effectiveness and agility of an e-maintenance supply chain.
