Transmission Ten-Year Development Plan 2011-2020 - Eskom
Transmission Ten-Year Development Plan 2011-2020 - Eskom
Transmission Ten-Year Development Plan 2011-2020 - Eskom
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The Northern Grid load growth is mainly due to platinum group metals (PGM) and ferrochrome mining and processing<br />
activities located in the Rustenburg, Polokwane and Steelpoort areas. The load demand for the years from 2009 to<br />
<strong>2020</strong> is expected to reflect the average annual percentage load increases shown in Table 7-3-1 above.<br />
The TDP Scheme Projects for the Northern Grid consist of extending the 400kV and 275kV networks as well as<br />
establishing the 765kV network, the integration of two power stations (Medupi and Coal 3) and the installation of<br />
additional transformers at existing and new substations.<br />
These main schemes are as follows:<br />
• Tabor and Spencer in the Polokwane area consists of 275kV and 400kV reinforcements.<br />
• Rustenburg 400kV reinforcement.<br />
• Medupi and Coal 3 power stations 400kV and 765kV integration.<br />
• Brits 400kV reinforcement.<br />
The TDP scheme projects for the North Grid consist of extending the 400kV and 275kV networks as well establishing<br />
the 765kV network, the integration of two power stations (Medupi and Coal 3), and the installation of additional<br />
transformers at existing and new substations. The increase in transmission assets by end-2015 and end-<strong>2020</strong> and the<br />
cumulative total are shown in Table 6.6.<br />
<strong>Transmission</strong> Assets<br />
for Northern Grid<br />
Table 6.6 North Grid new transmission assets<br />
New Assets expected<br />
in <strong>2011</strong> - 2015<br />
New Assets expected<br />
in 2016 - <strong>2020</strong><br />
Total New<br />
Assets expected<br />
Total kms of line 2,816 820 3,636<br />
765kV Lines (km)<br />
400kV Lines (km)<br />
275kV Lines (km)<br />
Total installed<br />
Transformer MVA<br />
700<br />
2,116<br />
0<br />
0<br />
670<br />
150<br />
700<br />
2,786<br />
150<br />
3,820 9,500 13,320<br />
Transformers (no. of) 10 8 18<br />
Capacitors (no. of) 0 0 0<br />
Reactors (no. of) 6 2 8<br />
© <strong>Eskom</strong> <strong>2011</strong> 25