Electricity + Control April 2016

TRANSFORMERS + SUBSTATIONS

ROUND UP

Power protection and isolation in unit substations for onshore wind farms ABB has supplied and advised in the imple- mentation of power protection and isolation using a special medium voltage switch-fuse combination switchgear in unit substations for one of the country’s largest wind power projects – the LongyuanMulilo DeAar 1 and 2 wind project in the Northern Cape, South Africa, with an expected installed capacity of 100 and 139 MW respectively. ABB’s NALFWind 36 kV switch-fuse combination units will be incorporated into 163 unit substations as part of a R15 M order from Adenco Construction, the EPC (Engineering, Procurement and Construction) contractor for the R5 billion wind project which was part of the third round of the DoE REIPPPP program. The R15 M order from Adenco includes the supply and delivery of 163 ABB 36 kV NALFWind switch-fuses, 20ABB 36 kV OVB-VBF outdoor vacuum circuit breakers and 10 ABB 145 kV LTB SF6 circuit breakers. The MV and HV equipment will be supplied by ABB’s local Electrification Products and Power Grids divisions. The first delivery of the breakers and fuses from ABB will begin in May 2016 and complete delivery is expected in October 2016. The 36 kV switch-fuses combination units will be sourced fromABB in Poland, the 145 kV circuit breakers from ABB in Sweden and the 36 kV outdoor circuit breakers from ABB in India. The ABB NALFWind 36 kV switch-fuse combination units are especially designed for use in wind electricity distribution envi- ronments where HRC fuses are required to handle high levels of fault energies. Enquiries: Shivani Chetram. Tel. +27 (0) 10 202 5090 or email shivani.chetram@za.abb.com

Maximising power potential Ricardo Energy & Environment is supporting Electricity North West to unlock additional capacity from the UK’s North West electricity network by enhancing the thermal efficiency of substation assets, maximising the power potential of existing infrastructure. Over the next 30 years the introduction of low carbon incentives and technology – such as domestic heat policies, electric vehicles, ground source heat pumps and renewable energy gen- eration – is predicted to significantly increase peak electricity demand. In the newly launched ‘Celsius’ project, funded via Ofgem’s Network Innovation Competition, Ricardo Energy and Environment and Electricity North West will identify innovative methods to accommodate this demand by optimising the capacity of sub- station assets, such as transformers. Drawing on experience devising and man- aging smart power network projects, Ricardo Energy and Environment will work with Elec- tricity NorthWest to improve the thermal man- agement of power substation assets. Power specialists fromRicardo Energy & Environment will perform detailed analysis of substation as- set performance and determine their capacity to handle increased electricity demand across a range of environments and demand charac- teristics, including time of day and seasonal variability. These insights will allow the team to develop operational strategies and retrofit cooling techniques that enhance thermal per- formance and capacity, avoiding the need for early replacement while safeguarding costs for energy users. Enquiries: DavidWilliams. Email David.Williams@ricardo.com

Improving wastewater treatment plant efficiency SEW-EURODRIVE CapeTown branch manager Byron Griffiths indicates that there are a number of plans for upgrades to wastewater treatment plants across South Africa and Swaziland to improve current infrastructure. He reveals that the company recently supplied ten FF107AM132 parallel helical geared motor units to the Matsapha Greenfields Wastewater Treatment Plant in Swaziland. “These units are ideally-suited for a mixing application in the wastewater treatment plant.” SEW-EURODRIVE has supplied geared motors for the mixers at the Saldanha Wastewater Treatment Works. “We provide detailed calculations that are custom- designed to each and every client’s individual specifications and preferences,” Griffiths continues. He points out that SEW-EURODRIVE supplies equipment for applications such as aerators, Archimedes screw pumps, mixers, screen drives, bridge drives and rotary filters. “On each quote or tender, we provide geared solutions that meet and exceed the specification that the industry expects when looking at bearing life, service fac- tor, thermal and gear ratings, and shaft stresses.” Griffiths believes that the greatest challenge in the industry is supplying a good quality product that meets the specifications laid out by industry at the best possible price. “Our value-added service, combined with comprehensive stockholding and a national foot print, places us in a good position, especially if planned projects go ahead as scheduled,” he concludes. Enquiries: Byron Griffiths.Tel. 021 552 9820

April ‘16 Electricity+Control

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