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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
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.
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
ROUND UP
TRANSFORMERS + SUBSTATIONS
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April ‘16
Electricity+Control