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25kV AC auto transformer technical overview for KiwiRail

Auckland’s population is expected to grow rapidly, with the surrounding infrastructure requiring improvement to support the increasing demand. There are more than 21 million…

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Sydney Trains electromagnetic compatibility (EMC) risk assessment

An audit was undertaken to confirm that Sydney Train’s engineering design processes incorporate Electromagnetic Compatibility (EMC) as per AEO requirements. There was an opportunity…

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Improving safety through power quality assessments

Trains on the 25 kV AC Auckland Metro Rail Network were experiencing flashover of their pantographs, from the overhead wire to the train’s roof.

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Southern Cross DC substation design supports high-capacity trains

As part of the Level Crossing Removal Authority (LXRA) program to eliminate Melbourne’s most dangerous and congested level crossings, a 2x4MW Southern Cross substation…

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500kV underground cable concept design studies and financial modelling

Middleton Group’s client required a feasibility and engineering estimate for the supply, installation, and commissioning of a 500kV underground twin circuit cable system including…

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220kV cable design for Mortlake South wind farm

Acciona required expertise for the design of a 220kV underground feeder cable system connecting the Mortlake South wind farm collector station to the Terrang…

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Functional specification for Cultana Pumped Hydro

Middleton Group were involved in the optioneering phase of the project through to the tender design for the Cultana Pumped Hydro project.

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Decommissioning a high-voltage laboratory

As part of a department-wide upgrade project of facilities and equipment, Monash University was decommissioning the Jack Wilson High Voltage Laboratory. The laboratory contained HV…

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Helping a glassmaker rebuild its furnace

Glass furnaces typically require a rebuild every 10-15 years, whereby the electrical and control infrastructure is upgraded over a shutdown period. O-I Glass needed to…

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