Oklahoma Gas & Electric (OG&E) Norman Hills Substation Case Study
Friday, Sept. 6 | 10:15-11 a.m.
With the collaboration of OG&E, Burns & McDonnell will discuss the challenges of unfavorable subsurface conditions for a large 345-kV/138-kV/13.8-kV interconnect substation in Norman, Oklahoma. These conditions included shallow bedrock to deep bedrock, long-term consolidation, and liquefication concerns. Furthermore, the grading design would have additional impacts on the overall site and foundations due to the threat of differential settlement. This is a significant concern for a facility that has limited deflection tolerances for rigidly connected elements. Given these constraints, Burns & McDonnell will discuss mitigation strategies available, and the foundation approach chosen for this specific substation. This topic will also shed light on challenges that utilities are often faced with in their substation projects.