...架空接触网；雷电防护；串联间隙金属氧化物避雷器；参数选择 Abstract: The main structure of the metal oxide surge ar[gap=405]Key words: overhead contact system; lightning protection; metal oxide surge arrester with series gap; parameters ..
Traction substation which obtains power from power system supplies power for overheadcontactsystem by feeders.
牵引变电所从电网取得电能，经馈线向接触网供电。
2
Among the four electrical power system mentioned before, the most economical and reasonable one is the overheadcontact voltage power supply which is supplied by the overhead contact directly.
在所设置的四种供电系统中，由接触网电压直接供电的网压电源是最经济、最合理的供电系统。
3
The overhead bridge in electric railway is an important factor for the contactsystem to operate in a safely and reliably.