Signal Power Supply System-Solution of Urban Rail

Power inlet of path 1

Power inlet of path 2

Switching device of power supply

Monitoring module

Voltage stabilizer

Transmission passage 

DC module

Computer interlocking

Computer monitoring

Axle counting power supply

Switch machine

AC load

DC load 

Remote monitoring room

[Introduction of Solution]

After being switched in the Y shape, two paths of AC input are outputted through power distribution, and respectively sent to the power supply modules of the single-unit UPS and switch machine. All loads are powered by UPS (except the power supply of the AC/DC switch machine).

The power supply output of the DC power supply is provided by the intelligent high-frequency switch power supply modules, all power supply modules operate in the parallel current-sharing mode of redundant backup. Under the normal condition of the module, modules in the same set uniformly share the load. When one of the power supply modules fails, the other modules can be ensured to provide the highest load demand, and the normal operation of the signal equipment is not influenced. The AC power supply is outputted after UPS voltage stabilization, and the power supply circuit is outputted by the isolating transformer. UPS is provided with accumulators of different backup times according to requirements of different sites.

To the intelligent monitoring, because of its independent design ability, Dinghan can realize the centralized monitoring of the county level and the centralized monitoring of the city level so as to provide various choices for the customer.