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Static Synchronous Compensator Refurbishment

Location:
Vermont
Completed:
2017

The project team had an eight-week outage duration, and completed the STATCOM replacement in six weeks, allowing two weeks for commissioning.

Scope of Work

Cianbro replaced the existing Mitsubishi Static Synchronous Compensator with a new GE Static Synchronous Compensator (STATCOM). The outage-driven project required removal of the existing equipment and installation of the new equipment in the same footprint, within an aggressive five-week schedule.

Project Details

  • Removed six (6) existing inverters from Statcom Building
  • Installed six (6) new 14-Ton inverters in Statcom Building
  • Removed five (5) existing heat exchangers
  • Installed five (5) new heat exchangers including associated stainless schedule 40 piping
  • Removed the existing filter bank foundations, structures, and equipment
  • Installed new filter bank foundations, structures, and equipment
  • Removed two (2) existing coolant pumps
  • Installed two (2) new coolant pumps and associated stainless schedule 40 piping 
  • Installed 576 linear feet of 4-inch aluminum rigid bus
  • Installed 18,660 linear feet of 750 kcmil underground feeder cables
  • 360 medium voltage cold-shrink stress cones

Lean, Innovative, and Unique Project Solutions

The STATCOM refurbishment project was a schedule-driven project, presenting unique challenges due to the diverse mix of trades, the compact work site, and the short outage window. The project team worked critical path activities with two shifts, around the clock, and was reliant on leadership from substation technicians, linemen, riggers, millwrights, welders, and carpenters. Each work activity was carefully planned. Team members maintained constant communication and remained focused on safely producing a top quality end product.