Mighty River Power is undertaking a replacement programme of the power transformers at its hydro power stations throughout New Zealand. In 2009/2010 four 11/220kV transformers where replaced - three at Maraetai and one at Whakamaru power stations.
The existing transformers were single phase units while the new ones are three phase. This technology upgrade was a key challenge for this project, requiring significant civil modifications to be undertaken at each site to accommodate the new units.
Edison provided Mighty River Power with project delivery and technical support for all transformer replacements.
The project delivery role included resolving daily site queries and issues, issuing of notice to contractors, reporting on site progress to Mighty River Power management, ensuring complete installation works were completed, liaising with station staff, contractor and major equipment suppliers, confirmation of payment claims from the contractor.
Craig Tomlinson, Station Manager