MEL and ElectroNet Services (ENS) completed the design / build of the 110kV switchyard and transmission line for the new Nova Energy McKee gas-fired power station; their largest and most modern station rated at approximately 100 MW. The station is located near Todd Energy’s McKee & Mangahewa gas fields, approximately 20km East of New Plymouth and comprises two GE LM6000 PC SPRINT open cycle gas turbines connected to the 110kV grid via 65MVA step up transformers.
The project process was rapid, with only 18 months from commencing the conceptual design to the completion in August 2012 and has involved multiple head and sub contractors in conjunction with asset owners Nova Energy and Transpower.
“The large number of parties involved means that effective communication and design coordination becomes a critical success factor,” said Mitton ElectroNet design manager John English. “This was a key consideration in the coordination required for designing the robust new System Make Ready communication platform in conjunction with Nova Energy, Transpower and their external communications contractor.”
Mitton ElectroNet services applied to this project included the ETC role for step up transformer procurement and specialist design for the switchyard, station earth grid, transformer protection, 110kV bus bar protection, duplicate and diverse communications systems and HV plant civil works.
ENS is providing transmission line design services in partnership with Linetec Consulting for the line route investigation and design components, with ElectroNet Services providing construction services for the overall transmission line and switchyard build.