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Ethernet backbone

This paper is a discussion of an NSTAR Electric & Gas Corp. project using current Ethernet technology to build a Local Area Network (LAN) in a single substation application.

Applying an Ethernet LAN in a Substation
Applying an Ethernet LAN in a Substation (photo credit: testingcommissioning.blogspot.rs)

NSTAR’s Substation 385D is built around a local Ethernet backbone that passes information for Supervisory Control and Data Acquisition (SCADA) and local monitoring and control via a Human-Machine Interface (HMI).

The heart of the system revolves around several communications processors. The system includes the following protection and control devices:

  • Communications processors
  • Serial-to-Ethernet transceivers
  • Ethernet switches
  • Intelligent Electronic Devices (IEDs)
  • Substation protection and event monitor/viewer
This paper discusses the application of an Ethernet LAN to provide a simplified communications backbone for local and remote control and monitoring.

Utility engineers, dispatchers, and operators also use the Ethernet LAN to retrieve and view the real-time operational and fault analysis data. The communications processor is acting as the hub for all the control points and data that are being moved through the system.

This paper discusses a practical example of design, application, commissioning, and lessons learned.

Title:Applying an Ethernet LAN in a Substation – Peter Talacci and Swapan Dey, Ronald E. Moore, Jr.
Format:PDF
Size:0.85 MB
Pages:14
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Applying an Ethernet LAN in a Substation
Applying an Ethernet LAN in a Substation

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