For Bryan Texas Utilities at Briarcrest substation, SynchroGrid performed a transformer relay upgrade for four transformer relays. Additionally, we used mathematical equations to create a separate differential function to differentiate faults between zone 1 and zone 2.
These services included:

  • Generation of design drawings to accomodate new transformer relays, including two SEL-387s and two SEL-487Es.
  • Generation of system protection drawings and schematics
  • Review of manufacture drawings
  • Creation of relay settings for all 4 new transformer relays
  • Added functionality to tie breaker relay SEL-351.
  • Relay coordination between transformer, feeders and tie breaker

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