Tenaga Nasional Berhad
Tenaga Nasional Berhad
Tenaga Nasional Berhad
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Appendix 16<br />
Demand forecast and sub-station capacity for LV system<br />
No Year<br />
Annual Maximum<br />
Growth Demand(kVA)<br />
1 0 2.00% 2000<br />
2 1 3.00% 2060.00<br />
3 2 3.00% 2121.80<br />
4 3 3.00% 2185.45<br />
5 4 3.00% 2251.02<br />
6 5 3.00% 2318.55<br />
7 6 2.00% 2364.92<br />
8 7 2.00% 2412.22<br />
9 8 2.00% 2460.46<br />
10 9 2.00% 2509.67<br />
11 10 2.00% 2559.86<br />
12 11 1.00% 2585.46<br />
13 12 1.00% 2611.32<br />
14 13 1.00% 2637.43<br />
15 14 1.00% 2663.81<br />
Remark<br />
Nos. of sub-station required and transformer sizes<br />
Year<br />
M.D (kVA)<br />
Transformer<br />
Loading (%)<br />
Transformer Sizes/Number of sub-stations<br />
500 750<br />
0 2000 60 6.67 4.44<br />
2 2060.00 65 6.34 4.23<br />
5 2251.02 70 6.43 4.29<br />
10 2509.67 75 6.69 4.46<br />
15 2663.81 80 6.66 4.44<br />
No. of sub-stations= M.D/( Tx size x % loading/100)<br />
No. of s/stns required = 4 (for a 1000 kVA Tx size)<br />
Year<br />
Maximum<br />
Demand (kVA)<br />
Feeder %<br />
Loading<br />
185mm2 Al<br />
XLPE 4-C<br />
230kVA @<br />
320A,0.415kV<br />
Feeder Capacity (kVA)/No. of feeders<br />
185mm2 Cu<br />
XLPE 4-C<br />
337kVA@<br />
470A,0.415kV<br />
300mm2 A1<br />
XLPE 4-C<br />
294kVA @<br />
410A, 0.415 kV<br />
300mm2 Cu<br />
XLPE 4-C<br />
431kVA @<br />
600A, 0.415kV<br />
0 2000 40 21.74 14.84 17.01 11.60<br />
2 2060 50 17.91 12.23 14.01 9.56<br />
5 2251 60 16.31 11.13 12.76 8.70<br />
10 2509 70 15.58 10.64 12.19 8.32<br />
15 2663 70 16.54 11.29 12.94 8.83<br />
No. of feeders = Max. Demand/( feeder capacity x % loading/100)<br />
TENAGA<br />
NASIONAL B E R H A D<br />
91
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