A5081851337- Magnetic Bearings and Levitation Dynamics
- Reliability and Maintenance Optimization
- Railway Systems and Energy Efficiency
- Railway Engineering and Dynamics
- Risk and Safety Analysis
- Vibration and Dynamic Analysis
- Power System Reliability and Maintenance
- Transportation Systems and Infrastructure
- Electrical Contact Performance and Analysis
China Academy of Railway Sciences
2024
The electrified railways in mountainous areas are faced with multiple difficulties such as weak power grids, special climatic environments, complex, and dangerous geographical conditions, which poses a great challenge to the reliable supply of traction system (TPSS). In order ensure that overall reliability level TPSS meets design requirements, this paper proposes allocation method for areas. Firstly, based on characteristics interconnected substation group (TSG) areas, topology TPSS, well...
Wheel flat can seriously affect the wheel–rail contact performance and cause impact vibrations, which significantly threaten safe operation of railway vehicles. It is crucial to accurately assess effects wheel flats on vibration traction drive system. However, studies related have focused mechanical part yet fully consider electrical parts entire Therefore, this paper first builds an electromechanical coupling model based electric system locomotive-track dynamics model. Then, model, under...
This paper proposes a maintenance evaluation method for complex systems with standby structure based on Goal Oriented (GO) to evaluate their Mean Time To Restoration (MTTR). First, the proposed is expounded in detail from aspects of conducting system analysis, developing model, and obtaining MTTR. Then, AC power single unit 100% capacity divisions nuclear plant taken as an example; its MTTR evaluated by this paper's method. All all, study not only widens application GO method; but also...
The off-line discharge between the pantograph and catenary (PAC) occurs frequently in actual operation of an electric locomotive, which affects quality received current service life pantograph. experiments on PAC are mainly low-power ones models established static. To study electrical behaviors during relative motion under working conditions, this paper, voltage contact wire (CW) its measured. And rise, fall reciprocating motions investigated by combining a finite element method (FEM) model...