Power System Projects

Nilstat Replacement - Vector

Carla Smith is working on a long term project to replace Nilstat relays.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Ngawha Geothermal Power Station Upgrade - Top Energy

Top Energy expanded their Ngawha Geothermal Power Station, which included contracting Ormat to install a new Ormat Energy Converter (OEC) system and a 20 MVA generator. Ergo’s role was to provide an upgrade to accommodate this increase in capacity.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Transformer Management Relays - Vector and Top Energy

Ross Dodd has been working on a project retrofitting new voltage regulation and transformer management relays.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Otahuhu 33kV Switchboard Upgrade - Pacific Steel

Scott Wilson has managed the replacement of Pacific Steel’s equipment without impacting on production.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Substation Upgrades - Vector

Ergo completed protection upgrade projects for many Vector substations. Old Nilstat Relays were replaced with modern digital relays, capable of full SCADA. The scope included a complete refurbishment of the control panels, SCADA, circuit breakers and the drawing system.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Ripple Plants - Powerco

Ripple plant upgrades are not a particularly common occurrence within an electricity network because the equipment typically lasts 30 to 40 years.  Such upgrades have, however, become common within Powerco’s network as its ripple plant equipment draws towards the end of its working life.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Substation Upgrade - Westfield

The Substation, located at the former Westfield freezing works site in Auckland was due for an upgrade.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Te Uku Wind Farm Substation - Meridien Energy

Te Uku Wind Farm, situated near Raglan, is jointly owned by WEL Networks and Meridian Energy. It consists of twenty-eight Siemens turbines, each with a capacity of 2.3MW. At full capacity they generate 64.4MW of electricity - enough to power 30,000 average-sized New Zealand homes. 

A new substation was required for the turbines and for two 33kV circuits - One circuit supplying the WEL Network, the other Transpower’s Te Kowhai substation.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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Transformer Upgrade Design - Powerco

Load growth forecasts for the Matamata region provided the impetus for Powerco’s 2010 upgrade of its Browne Street substation.

Carla Smith

Head of Department | Power Systems

Phone: 09 365 9711

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