SIGNET
Re-configurable power system
SIGNET is a ‘Smart Grid’ that is designed to maintain the supply of power during arduous fault conditions. In the event of a fault, or even when a section of the cable is stolen, SIGNET switches first open in order to protect the power system and then SIGNET automatically re-configures the network to isolate the faulted or missing cable section and provide continuity of supply. Once the fault has been repaired or the cable replaced, SIGNET will restore the network to its original configuration.
As SIGNET is a fully configurable power system the faulted section of cable can be repaired or replaced at a time convenient for the network operator. Following any remedial cable works SIGNET can be restored to its original configuration with no effect on train movements.
Key routes
The SIGNET system is installed on Network Rails West Coast Mainline, the UK’s most strategic route connecting London to Glasgow. SIGNET is also installed on the East London Overground Line, providing total network reliability for the London Olympics.
Intelligent Infrastructure
SIGNET brings intelligence to low voltage power networks by remotely communicating live network conditions 24/7 to the network management system. Alarms are automatically forwarded in the event of a cable fault of theft providing maintenance teams with vital up to date information.
Train delays
As the global use of railways continues to grow there is increasing pressure to ensure the network is reliable and efficient. A significant portion of train delays can be attributed to loss of signalling power, either by a genuine cable fault or theft, which disrupts the network often resulting in long delays and, in some cases, heavy fines for the network operator. SIGNET automatically restores power to the signals to maintain supply and keep trains running, eliminating train delays.
Key Benefits:
- Automatic isolation of cable faults or cable theft
- Automatic restoration of supply
- Available in 400V and 650V for IT or TN systems
- Brings intelligence to signalling power networks
- Communications – alarms and events reported automatically to the network management system
- Total network reliability, no delays
- Counteracts cable theft by re-configuring the power supply
Graphical Example
Above: Graphical example of fault between FSP3 and FSP4. SIGNET system has automaically isolated the fault and maintained supply to all FSPs.
PSP Monitoring System
Above: A screenshot of PMS
The PMS monitors the installed SIGNETs and forwards alarms to a central location for subsequent distribution and display.
- Monitors dry-contact alarms in the PSP
- Provision of door alarm system
- Monitors SIGNET feeders fed from the PSP
- Forwards alarms to network management system
Design Manager
Above: SIGNET Design Manager
Topology of the signalling supply feeder and the principal electrical parameters are entered into the SIGNET Design Manager. Using this software the system designer can determine the optimum programmable parameters for the SIGNET system.
