SCADA, short for Supervisory Control and Data Acquisition, is a Smart Distribution capability providing the process control systems that enable computerized management of distribution grid elements. Distribution SCADA systems have been around for years; however, not all distribution substations have communications for SCADA and many that do have SCADA use leased lines or phone/POTS lines for communications, which are typically low bandwidth and expensive.
A Smart Grid WAN broadband deployment can extend private communications to all substations to enable SCADA without the on-going expense of leased circuits. The WAN can provide the two-way communicates required for centralized control systems:
• Centrally monitor and control remote terminal units (RTUs)
• Centrally monitor and control programmable logic controllers (PLCs)
Distribution SCADA systems typically do not require much bandwidth and are latency tolerant but do require always-on connectivity in order to operate effectively.

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