Research on Dynamic Current Collection Characteristics of High-Speed Railway Double-Pantograph-Catenary System Under Environmental Wind
The influence of environmental wind load on the dynamic current collection performance(DCCP)is studied for high-speed railway double-pantograph-catenary system(DPCS).Firstly,the model of DPCS is es-tablished based on the modal analysis method,taking the Lanzhou-Urumqi high-speed railway located in the strong wind area of western China as the research object.Secondly,the aerodynamic theory is used for deducing the environmental wind load acting on catenary wires.Then,considering the influence of cross-wind air damp-ing,the DCCP of double pantographs under the action of air damping is investigated.Finally,the fluctuating wind field along the catenary is established by using the fourth-order Autoregression(AR)model,of which the influence of wind speed and wind attack angle on the DCCP of double pantographs is analyzed.The results show that the cross-wind air damping has little effect on the current collection of double pantographs.Under the action of fluctuating wind,the greater wind speed and the more vertical wind direction lead to the worse DCCP of double pantographs.The DCCP of trailing pantograph(TP)is more sensitive to wind speed and wind attack angle than that of leading pantograph(LP).The wind vibration response analysis of DPCS can provide refer-ence for optimizing the pantograph-catenary current collection quality and the design of catenary wind protection parameters.
high-speed railwaydouble-pantograph-catenary systemair dampingfluctuating windpantograph-catenary current collection
NETL
NSTL
万方数据
维普
