Enbridge Inc. Montana Alberta Tie Line (MATL) Planning Studies and Remedial Action Scheme (RAS)

Enbridge Inc Montana Alberta Tie Line MATL Planning Studies and Remedial Action Scheme RAS

Enbridge Inc. developed the Montana Alberta Tie Line (MATL), connecting two previously disjointed Western Electricity Coordinating Council (WECC) areas, and constituted the sole element in a new WECC Path.

MATL is a 230 kV, 300 MW electrical transmission line that provides a direct link between the Alberta Interconnected Electrical System (AIES) in Canada and the NorthWestern Energy (NWE) system in the United States.

As it was a new transmission path in the WECC network, a Remedial Action Scheme (RAS) was necessary to maintain system reliability and stability. Teshmont carried out transient stability studies, using WECC cases and referencing NERC Standard TPL 001-04, to determine the functional requirements of the RAS for MATL.

The study results were used to prepare the conceptual design of the RAS scheme, including the determination of protection algorithms and settings. Teshmont developed the RAS model and verified with further transient stability studies that the RAS performance satisfied the stability and reliability requirements for MATL. Teshmont also provided support to the client for third party stakeholder engagement throughout the study and design process. Teshmont ultimately presented the study results and the RAS design to the WECC Remedial Action Scheme Subcommittee on behalf of MATL, in order to obtain approval for the RAS.

Teshmont has been providing on-going study support services to MATL since the project’s implementation.

Teshmont was awarded the 2016 Association of Consulting Engineering Companies (ACEC) Manitoba “Award of Excellence” in the Energy Resource Development category for our work on this project. An Award of Excellence is the highest award possible within a category, and recognizes outstanding achievement in consulting engineering.

At a Glance:

Client: Enbridge Inc. / Montana Alberta Tie Limited
Country: Canada
Geographical Region: North America