弓网电弧起弧和熄弧距离及电弧烧蚀磨损的试验研究∗

摘要

The striking and extinguishing distances of pantograph⁃catenary arcing were studied experimentally by using an own developed test apparatus of pantograph⁃catenary arcing.A way for on⁃line measuring the arc striking and extinguis⁃hing distance was suggested.The effects of electric current and voltage on the arc striking and extinguishing distances and the electric arc erosion loss of contact strip were studied through tests.The test results show that,along with the increasing of voltage,the striking and extinguishing distances are increased linearly. The electric arc erosion wear loss of the contact strip is increased notably with the increasing of arc current and voltage. The electric arc erosion wear loss of the contact strip is closely related with the arc energy,along with the increasing of arc energy,the wear loss of contact strip is increased as well.%利用自行研制的弓网电弧试验系统，研究弓网电弧起弧和熄弧距离。提出一种弓网电弧起弧和熄弧距离在线测量方法，通过试验研究电压、电流对弓网电弧起弧和熄弧距离的影响以及滑板电弧烧蚀磨耗的影响。试验结果显示，弓网离线起弧和熄弧距离随着电压的增大近似呈线性地增大；滑板电弧烧蚀磨损量随着电压和电流的增大而显著增大；电弧烧蚀磨损量与电弧能量密切相关，随着电弧能量增大，滑板磨损量也随之增大。