Innovative Phase-Angle Control Helps AEP Optimize Power Flow on Transmission Grid

Published By Schweitzer Engineering Laboratories, Inc. (SEL)

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Innovative Phase-Angle Control Helps AEP Optimize Power Flow on Transmission Grid

Published By Schweitzer Engineering Laboratories, Inc. (SEL)

  • Published March 2008
  • 4 Page(s)

AEP (American Electric Power) has installed 138 kV, 150 MVA phase-shifting transformers (PSTs) on the ERCOT (Electric Reliability Council of Texas) transmission grid. Three units went into service in 2006, one in 2007, and at least one installation is planned for 2008. These transformers were selected to help optimize power flow from existing transmission system assets until future 345 kV line construction projects can be completed. The delta/hex PSTs deployed in South Texas are a new, single-tank design that promises to be much more economical than previous designs.

 

 



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