We were contracted to perform engineering, testing, and commissioning of a power station’s outdoor 66kV switchyard. There were two (2) separate scopes to this work. The first part consisted of the addition of a new switchyard for the combustion turbine generator repowering of the plant. The second part consisted of modifications to the existing switchyard to support the reuse of the existing plant steam turbine and plant equipment.
The project consisted of a 90MW natural gas plant utilizing two (2) step-up transformers and two (2) turbines that fed into a new 66kV substation. A third 30MW turbine powered by the steam heat recovery fed into the existing 66kV west bus. The existing switchyard substation consisted of 60MVA transformers, fiber optic communication with UGI electric utility, telephone line procurement, and coordination. PJM RTU design, assembly, and programming for Internet-based RTU using the ARCOM director was utilized for this project.
