Design and Testing of 500kV Double Circuit Monopoles for the Heartland Transmission Project in Edmonton, Alberta

摘要

The Heartland Transmission Project is a recently built 500kV double circuit transmission line near Edmonton, Alberta, Canada. The scope of the project was to connect the existing Ellerslie Substation, located within Edmonton, to the new Heartland Substation, located approximately 65 kilometers northeast of Edmonton in the Heartland Industrial Area, near Fort Saskatchewan, Alberta. Approximately half of the line was built within a designated Transportation and Utility Corridor (TUC) with a section passing between the communities of Edmonton and Sherwood Park. The Alberta Utility Commission (AUC) declared that a 10 km section of the line passing between the communities of Edmonton and Sherwood Park were to be built using tubular steel structures rather than the traditional lattice steel towers. The process of developing a family of tubular monopoles consisting of tangent, light, and medium angle suspension towers and site-specific dead-end towers is outlined. The design, from a conceptual stage through to the project's completion is discussed. Topics will cover the development of pole design requirement drawings, structure design, manufacturing, full scale testing, and foundation design.