Transmission & Distribution Technology
Fig. 1. ABB’s Al-Kharj sub-station project in Saudi Arabia project should reduce the local area’s dependence on oil
Te turnkey project scope includes delivery of key products such as high- and medium-voltage gas and air insulated switchgear, transformers, auxiliary systems and cables (Fig. 1). ABB will also supply the Scada system as well as the automation, control, protection and communication systems, compliant with the international IEC 61850 standard to enable remote monitoring and control of power assets located at multiple sites from the central region control centre. Te substations will be equipped with capacitor
banks to reduce electricity losses and enhance the stability and quality of power supply by improving the network’s power factor, which is an indicator of the usable power available in the grid. Te projects are scheduled for completion by 2014. In Australian news, Western Power has awarded
Downer EDI Engineering Power a construction contract valued at more than A$175m (€141m) for its new major transmission line between Pinjar, in Perth’s northern suburbs, and Eneabba. Te new 190 km transmission line will form a critical part of Western Power’s A$443m (€358m) Mid West Energy Project Stage 1.
“Te Mid West Energy Project is critical for the
Mid West in facilitating the connection of new mining projects, encouraging investment in renewable energy projects and enabling new power generation projects to deliver power into the grid,” said Western Power’s acting ceo Paul Italiano. Te Pinjar-Eneabba 330 kV transmission line will connect to the 70 km transmission line which has been constructed by Karara Mining between Eneabba and
3M ACCR to expand transmission in Siberia A
lready in use on four continents in a broad range of harsh climates, 3M ACCR (aluminium conductor
composite reinforced) is now installed in Siberia, serving one of the region’s largest cities, Irkutsk. Irkutsk Electronetwork (IESK) chose
the overhead conductor as a way to avoid tower construction or right-of-way expansion while nearly doubling power transmission to the city’s central district, where growing demand was putting a severe strain on capacity, according to the utility.
3M ACCR is a lightweight, low-sag, high- 12
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capacity conductor that can carry twice the current or more of conventional steel-core conductors of the same diameter, on existing towers, thereby helping utilities circumvent problems in crowded urban settings and environmentally sensitive areas. Its low-sag characteristic also provides a solution for clearance issues. In Irkutsk, the 110kV line raises
capacity to 1600A on the link between a local hydropower plant and the Tzimlyanskaya substation, and to 1240A on the Tzimlyanskaya-Kirovskaya substation link. The 3M ACCR line replaced conventional steel-aluminium conductors.
The utility considered the option of
increasing capacity by building a parallel line, but determined that acquiring the land and constructing the towers would be prohibitively expensive and difficult because of the crowded urban area. Installing larger aluminium- steel conductors would have required rebuilding the existing towers to bear the heavier weight. 3M ACCR also is operating in
installations by utilities in Moscow and several other Russian locations, as well as in China, India, Brazil, Canada, Western Europe and the USA. ●
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