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Los Angeles County Metropolitan Transportation Authority: Metro Gold Line Eastside Extension
Burns Engineering was recently selected to provide a full range of electrification design and construction support services to the Systems Design-Build Contractor Balfour Beatty Rail Inc. for the Eastside extension of the Metro Gold Line Light Rail Transit in Los Angeles, CA.
The Burns Electrification Group will be assisting the design-build team in providing the following services:
- Completion of a fully integrated Overhead Contact System (OCS) design
- Development of all OCS assembly load determinations to assist with constructability
- Completion of fully-integrated Traction Power (TP) and Ancillary Power (AP) system designs
Upon completion of the work, the Eastside project will provide an additional six miles of double-track LRT in extending the existing Gold Line from Union Station to Pomona, linking the communities of East Los Angeles and Little Tokyo with Downtown Los Angeles, Long Beach, Hollywood and the San Fernando Valley. Eight new station stops will be added, including two underground locations.
The OCS design comprises development of technical details for all catenary-related assemblies, poles/structures, and sectionalizing to meet MTA operational needs in open route as well as in the tunnel, including special design elements for providing «??low-profile«?? OCS throughout the corridor. The design also involves load determinations at each location for proper selection and allocation of OCS support assemblies, poles and foundations.
The TP design is comprised of performing system load flow studies and developing design, installation and interface details for six 1.5 MW mainline prefabricated substations. The AP system comprises design, installation and interface of three 34.5kV ancillary switchgear units. The TP design includes a system-wide Emergency Trip Station scheme, which enables traction power to shut off at the affected sections from wayside emergency trip stations. It also includes remote control of the traction power system through SCADA. The design effort also includes close coordination with local utilities to obtain primary feeds and proper connections to the available 34.5 kV or 16.34 kV power grids.
Posted on Mar 23, 12:38 PM