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Wireless distribution grid automation solutions

Enabling connectivity of secondary substations

With increasing level of automation also penetrating into secondary substations, thanks to smart grids and microgrids, it becomes imperative for secondary substations to also be connected amongst each other for distributed applications and also to Control Centers hosting SCADA, DMS applications. Since these secondary distribution substations are generally distributed in urban areas or in remote rural areas, the only viable medium of communication is using public mobile networks.
Using the Arctic product family, another 'layer' of communication solutions is enabled over the substation 'layer' (eg. FDIR, LC1000, GA solutions etc.) to achieve the objectives. 

The solution comprises of the ARx600 (x=C/G/M) wireless gateway device with or without local IO handling at the secondary substation and ARM600 M2M gateway at the remote end (Control Center). 

Scope

  • Secure proxy between the cellular network and the substation network using integrated firewall
  • Introduce VPN with authentication and encryption between substation and remote end (Control Center)
  • TCP routing on messages from substation network based on communication protocols supported by SCADA
  • Routing traffic from substation network on cellular network using 1 or 2 SIM cards (northside) 4G/3G, between substation network and SCADA
  • VPN concentrator and VPN tunnel management device to all substation side ARG600 wireless gateways
  • Through Arctic Patrol software application, perform remote asset (fleet) management of ARG600 devices
  • Perform remote configuration and firmware update to all downstream ARx600 devices
  • Perform configuration back-ups of all ARx600 devices

Benefits

  • Reliable and seamless connectivity to control center from secondary substations to control center
  • Modular approach to introduce additional layer of wireless automation solution, which is 'independent' of the substation layer
  • Lesser investment cost to customer as compared to dedicated, privately owned network and consequent cost savings (maintenance, upgrade of communication lines etc.)

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